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Schwartz FR, Ronald JS, Kalisz KR, Fu W, Ramirez-Giraldo JC, Koweek LMH, Churchill S, Southerland KW, Marin D. First experience of evaluation of the impact of high-matrix size reconstruction in image quality in arterial CT runoff studies of the lower extremities. Eur Radiol 2023; 33:8745-8753. [PMID: 37382617 DOI: 10.1007/s00330-023-09841-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/20/2023] [Accepted: 04/14/2023] [Indexed: 06/30/2023]
Abstract
OBJECTIVES To determine whether image reconstruction with a higher matrix size improves image quality for lower extremity CTA studies. METHODS Raw data from 50 consecutive lower extremity CTA studies acquired on two MDCT scanners (SOMATOM Flash, Force) in patients evaluated for peripheral arterial disease (PAD) were retrospectively collected and reconstructed with standard (512 × 512) and higher resolution (768 × 768, 1024 × 1024) matrix sizes. Five blinded readers reviewed representative transverse images in randomized order (150 total). Readers graded image quality (0 (worst)-100 (best)) for vascular wall definition, image noise, and confidence in stenosis grading. Ten patients' stenosis scores on CTA images were compared to invasive angiography. Scores were compared using mixed effects linear regression. RESULTS Reconstructions with 1024 × 1024 matrix were ranked significantly better for wall definition (mean score 72, 95% CI = 61-84), noise (74, CI = 59-88), and confidence (70, CI = 59-80) compared to 512 × 512 (wall = 65, CI = 53 × 77; noise = 67, CI = 52 × 81; confidence = 62, CI = 52 × 73; p = 0.003, p = 0.01, and p = 0.004, respectively). Compared to 512 × 512, the 768 × 768 and 1024 × 1024 matrix improved image quality in the tibial arteries (wall = 51 vs 57 and 59, p < 0.05; noise = 65 vs 69 and 68, p = 0.06; confidence = 48 vs 57 and 55, p < 0.05) to a greater degree than the femoral-popliteal arteries (wall = 78 vs 78 and 85; noise = 81 vs 81 and 84; confidence = 76 vs 77 and 81, all p > 0.05), though for the 10 patients with angiography accuracy of stenosis grading was not significantly different. Inter-reader agreement was moderate (rho = 0.5). CONCLUSION Higher matrix reconstructions of 768 × 768 and 1024 × 1024 improved image quality and may enable more confident assessment of PAD. CLINICAL RELEVANCE STATEMENT Higher matrix reconstructions of the vessels in the lower extremities can improve perceived image quality and reader confidence in making diagnostic decisions based on CTA imaging. KEY POINTS • Higher than standard matrix sizes improve perceived image quality of the arteries in the lower extremities. • Image noise is not perceived as increased even at a matrix size of 1024 × 1024 pixels. • Gains from higher matrix reconstructions are higher in smaller, more distal tibial and peroneal vessels than in femoropopliteal vessels.
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Affiliation(s)
- Fides R Schwartz
- Department of Radiology, Duke University Health System, 2301 Erwin Road, Box 3808, Durham, NC, 27110, USA.
| | - James S Ronald
- Department of Radiology, Duke University Health System, 2301 Erwin Road, Box 3808, Durham, NC, 27110, USA
| | - Kevin R Kalisz
- Department of Radiology, Duke University Health System, 2301 Erwin Road, Box 3808, Durham, NC, 27110, USA
| | - Wanyi Fu
- Department of Radiology, Duke University Health System, 2301 Erwin Road, Box 3808, Durham, NC, 27110, USA
| | | | - Lynne M Hurwitz Koweek
- Department of Radiology, Duke University Health System, 2301 Erwin Road, Box 3808, Durham, NC, 27110, USA
| | - Susan Churchill
- Department of Radiology, Duke University Health System, 2301 Erwin Road, Box 3808, Durham, NC, 27110, USA
| | - Kevin W Southerland
- Department of Vascular Surgery, Duke University Health System, Durham, NC, USA
- Department of Surgery, Duke University Health System, 2301 Erwin Road, Box 3704, Durham, NC, 27110, USA
| | - Daniele Marin
- Department of Radiology, Duke University Health System, 2301 Erwin Road, Box 3808, Durham, NC, 27110, USA
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Cao JJ, Shen L, Nguyen J, Rapelje K, Porter C, Shlofmitz E, Jeremias A, Cohen DJ, Ali ZA, Shlofmitz R. Accuracy and limitation of plaque detection by coronary CTA: a section-to-section comparison with optical coherence tomography. Sci Rep 2023; 13:11845. [PMID: 37481671 PMCID: PMC10363114 DOI: 10.1038/s41598-023-38675-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 07/12/2023] [Indexed: 07/24/2023] Open
Abstract
Plaques identified by Coronary CT angiography (CCTA) are important in clinical diagnosis and primary prevention. High-risk plaque features by CCTA have been extensively validated using optical coherence tomography (OCT). However, since their general diagnostic performance and limitations have not been fully investigated, we sought to compare CCTA with OCT among consecutive vessel sections. We retrospectively compared 188 consecutive plaques and 84 normal sections in 41 vessels from 40 consecutive patients referred for chest pain evaluation who had both CCTA and OCT with a median time lapse of 1 day. The distance to reference points were used to co-register between the modalities and the diagnostic performance of CCTA was evaluated against OCT. Plaque categories evaluated by CT were calcified, non-calcified and mixed. The diagnostic performance of CCTA was excellent for detecting any plaque identified by OCT with the sensitivity, specificity, negative and positive predictive values and accuracy of 92%, 98%, 99%, 84% and 93%, respectively. The lower than expected negative predictive value was due to failure of detecting sub-millimeter calcified (≤ 0.25 mm2) (N = 12) and non-calcified plaques (N = 4). Misclassification of plaque type accounted for majority of false negative findings (25/41, 61%) which was most prevalent among the mixed plaque (19/41, 46%). There was calcification within mixed plaques (N = 5) seen by CCTA but missed by OCT. Our findings suggest that CCTA is excellent at identifying coronary plaques except those sub-millimeter in size which likely represent very early atherosclerosis, although the clinical implication of very mild atherosclerosis is yet to be determined.
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Affiliation(s)
- J Jane Cao
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA.
| | - Linghong Shen
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - James Nguyen
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
| | - Kathleen Rapelje
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
| | - Craig Porter
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
| | - Evan Shlofmitz
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
| | - Allen Jeremias
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
| | - David J Cohen
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
| | - Ziad A Ali
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
| | - Richard Shlofmitz
- Department of Cardiology, St Francis Hospital and Heart Center, 100 Port Washington Blvd, Roslyn, NY, USA
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Chen Q, Pan T, Wang YN, Schoepf UJ, Bidwell SL, Qiao H, Feng Y, Xu C, Xu H, Xie G, Gao X, Tao XW, Lu M, Xu PP, Zhong J, Wei Y, Yin X, Zhang J, Zhang LJ. A Coronary CT Angiography Radiomics Model to Identify Vulnerable Plaque and Predict Cardiovascular Events. Radiology 2023; 307:e221693. [PMID: 36786701 DOI: 10.1148/radiol.221693] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Background A noninvasive coronary CT angiography (CCTA)-based radiomics technique may facilitate the identification of vulnerable plaques and patients at risk for future adverse events. Purpose To assess whether a CCTA-based radiomic signature (RS) of vulnerable plaques defined with intravascular US was associated with increased risk for future major adverse cardiac events (MACE). Materials and Methods In a retrospective study, an RS of vulnerable plaques was developed and validated using intravascular US as the reference standard. The RS development data set included patients first undergoing CCTA and then intravascular US within 3 months between June 2013 and December 2020 at one tertiary hospital. The development set was randomly assigned to training and validation sets at a 7:3 ratio. Diagnostic performance was assessed internally and externally from three tertiary hospitals using the area under the curve (AUC). The prognostic value of the RS for predicting MACE was evaluated in a prospective cohort with suspected coronary artery disease between April 2018 and March 2019. Multivariable Cox regression analysis was used to evaluate the RS and conventional anatomic plaque features (eg, segment involvement score) for predicting MACE. Results The RS development data set included 419 lesions from 225 patients (mean age, 64 years ± 10 [SD]; 68 men), while the prognostic cohort included 1020 lesions from 708 patients (mean age, 62 years ± 11; 498 men). Sixteen radiomic features, including two shape features and 14 textural features, were selected to build the RS. The RS yielded a moderate to good AUC in the training, validation, internal, and external test sets (AUC = 0.81, 0.75, 0.80, and 0.77, respectively). A high RS (≥1.07) was independently associated with MACE over a median 3-year follow-up (hazard ratio, 2.01; P = .005). Conclusion A coronary CT angiography-derived radiomic signature of coronary plaque enabled the detection of vulnerable plaques that were associated with increased risk for future adverse cardiac outcomes. © RSNA, 2023 Supplemental material is available for this article. See also the editorial by De Cecco and van Assen in this issue.
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Affiliation(s)
- Qian Chen
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Tao Pan
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Yi Ning Wang
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - U Joseph Schoepf
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Samuel L Bidwell
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Hongyan Qiao
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Yun Feng
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Cheng Xu
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Hui Xu
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Guanghui Xie
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Xiaofei Gao
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Xin-Wei Tao
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Mengjie Lu
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Peng Peng Xu
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Jian Zhong
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Yongyue Wei
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Xindao Yin
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Junjie Zhang
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
| | - Long Jiang Zhang
- From the Departments of Radiology (Q.C., H.X., G.X., X.Y.) and Cardiology (T.P., X.G., J. Zhang), Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Diagnostic Radiology, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing 210002, China (Q.C., U.J.S., P.P.X., J. Zhong, L.J.Z.); Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.N.W., C.X.); Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC (U.J.S., S.L.B.); Department of Medical Imaging, Affiliated Hospital of Jiangnan University, Wuxi, China (H.Q.); Department of Medical Imaging, Medical Imaging Center, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China (Y.F.); Bayer Healthcare, Shanghai, China (X.W.T.); School of Public Health, Shanghai JiaoTong University School of Medicine, Shanghai, China (M.L.); and Department of Biostatistics, School of Public Health, China International Cooperation Center for Environment and Human Health, Nanjing Medical University, Nanjing, China (Y.W.)
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4
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Shibutani H, Fujii K, Shirakawa M, Uchida K, Yamada K, Kawakami R, Imanaka T, Kawai K, Hashimoto K, Matsumura K, Hao H, Hirota S, Shiojima I, Yoshimura S. Diagnostic Accuracy of Optical Frequency Domain Imaging for Identifying Necrotic Cores with Intraplaque Hemorrhage in Advanced Human Carotid Plaques. Am J Cardiol 2021; 156:123-128. [PMID: 34344514 DOI: 10.1016/j.amjcard.2021.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 06/12/2021] [Accepted: 06/15/2021] [Indexed: 10/20/2022]
Abstract
This study investigated whether optical frequency domain imaging (OFDI) can identify carotid artery vulnerable plaque characteristics, focusing on lipid-rich necrotic core (NC) and intraplaque hemorrhage (IPH). Fourteen patients scheduled for carotid endarterectomy underwent OFDI scan during preoperative angiography. Atherosclerotic plaque specimens obtained from carotid endarterectomy were cut every 3-4 mm into 4-μm transverse cross-sections and stained with standard methods. Each cross-section was matched with OFDI, and histologically classified into either fibrous, calcific, pathological intimal thickening (PIT), and NC. Of 75 histologic cross-sections, 6 were categorized as fibrous (8%), 18 as calcific (24%), 9 as PIT (12%), and 42 as NC (56%). Tissues categorized as NC had significantly higher OFDI signal attenuation rates than the other tissues (p <0.001), followed by PIT, calcific, and fibrous tissues. The receiver operating characteristic analysis indicated that attenuation rates of >0.023 and >0.031 predicted the presence of NC and IPH with high areas under the curve of 0.91 and 0.88, respectively. OFDI provides potential capability for the detection of NCs with IPH of carotid artery plaques by quantitatively analyzing the attenuation rate.
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5
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Shaw LJ, Blankstein R, Bax JJ, Ferencik M, Bittencourt MS, Min JK, Berman DS, Leipsic J, Villines TC, Dey D, Al'Aref S, Williams MC, Lin F, Baskaran L, Litt H, Litmanovich D, Cury R, Gianni U, van den Hoogen I, R van Rosendael A, Budoff M, Chang HJ, E Hecht H, Feuchtner G, Ahmadi A, Ghoshajra BB, Newby D, Chandrashekhar YS, Narula J. Society of Cardiovascular Computed Tomography / North American Society of Cardiovascular Imaging - Expert Consensus Document on Coronary CT Imaging of Atherosclerotic Plaque. J Cardiovasc Comput Tomogr 2021; 15:93-109. [PMID: 33303383 DOI: 10.1016/j.jcct.2020.11.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Coronary computed tomographic angiography (CCTA) provides a wealth of clinically meaningful information beyond anatomic stenosis alone, including the presence or absence of nonobstructive atherosclerosis and high-risk plaque features as precursors for incident coronary events. There is, however, no uniform agreement on how to identify and quantify these features or their use in evidence-based clinical decision-making. This statement from the Society of Cardiovascular Computed Tomography and North American Society of Cardiovascular Imaging addresses this gap and provides a comprehensive review of the available evidence on imaging of coronary atherosclerosis. In this statement, we provide standardized definitions for high-risk plaque (HRP) features and distill the evidence on the effectiveness of risk stratification into usable practice points. This statement outlines how this information should be communicated to referring physicians and patients by identifying critical elements to include in a structured CCTA report - the presence and severity of atherosclerotic plaque (descriptive statements, CAD-RADS™ categories), the segment involvement score, HRP features (e.g., low attenuation plaque, positive remodeling), and the coronary artery calcium score (when performed). Rigorous documentation of atherosclerosis on CCTA provides a vital opportunity to make recommendations for preventive care and to initiate and guide an effective care strategy for at-risk patients.
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Affiliation(s)
- Leslee J Shaw
- Weill Cornell School of Medicine, New York, NY, USA.
| | - Ron Blankstein
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | | | | | - James K Min
- Weill Cornell School of Medicine; Cleerly, Inc. (started in 2020), New York, NY, USA
| | - Daniel S Berman
- Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | | | - Damini Dey
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | | | - Fay Lin
- Weill Cornell School of Medicine, New York, NY, USA
| | | | - Harold Litt
- Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA, USA
| | - Diana Litmanovich
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Ricardo Cury
- Miami Cardiac and Vascular Institute and Baptist Health of South Florida, Miami, FL, USA
| | | | | | | | - Matthew Budoff
- David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | | | | | | | - Amir Ahmadi
- Mount Sinai School of Medicine, New York, NY, USA
| | | | - David Newby
- University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | | | - Jagat Narula
- Mount Sinai School of Medicine, New York, NY, USA
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6
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Fallesen CO, Maehara A, Antonsen L, Nørregaard Hansen K, Noori M, Flensted Lassen J, Junker A, Hansen HS, Okkels Jensen L. Coronary Artery Healing Process after Bioresorbable Scaffold in Patients with Non-ST-Segment Elevation Myocardial Infarction: Rationale, Design, and Methodology of the HONEST Study. Cardiology 2021; 146:161-171. [PMID: 33524985 DOI: 10.1159/000512417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 09/30/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Bioresorbable scaffolds (BRSs) is a relatively new approach in treating coronary artery stenosis. The initial results of the first commercially available scaffolds consisting of a backbone of poly-L-lactide raised safety concerns related to delayed resorption and healing. The magnesium alloy-based scaffold degrades via bio-corrosion within months, whereas it often takes several years for polymer scaffolds to degrade. The aim of the study was to assess the healing stage by optical coherence tomography (OCT) after 6 months in patients with non-ST-segment elevation myocardial infarct (NSTEMI) randomized to OCT or angiography-guided percutaneous coronary intervention with implantation of a magnesium sirolimus-eluting Magmaris scaffold (Magmaris; Biotronik, Bülach, Switzerland). METHODS We analyzed the healing process by comparing OCT at baseline and after 6 months. Five stages of healing were defined with stage 1 being the least healed and stage 5 demonstrating complete resorption and healing with no visible scaffold/remnant. The primary end point is a calculated healing score that is based on 5 subtypes of healing stage: (1) malapposed, (2) uncovered with no detection of smooth surface tissue on top of struts or remnants, (3) covered protruding, (4) covered embedded, and (5) complete healing with a smooth neointimal surface and no sign of struts or visible remnants assessed by OCT 6 months after the index procedure. RESULTS The impact of OCT-guided compared to angiography-guided scaffold implantation will be illuminated. CONCLUSION The present study will provide new information on midterm healing properties of the magnesium BRS in patients with NSTEMI.
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Affiliation(s)
| | - Akiko Maehara
- Cardiovascular Research Foundation, New York Presbyterian Hospital, New York, New York, USA
| | - Lisbeth Antonsen
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | | | - Manijeh Noori
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | | | - Anders Junker
- Department of Cardiology, Odense University Hospital, Odense, Denmark
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7
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Merkulova IN, Shariya MA, Mironov VM, Shabanova MS, Veselova TN, Gaman SA, Barysheva NA, Shakhnovich RM, Zhukova NI, Sukhinina TS, Staroverov II, Ternovoy SK. [Computed Tomography Coronary Angiography Possibilities in "High Risk" Plaque Identification in Patients with non-ST-Elevation Acute Coronary Syndrome: Comparison with Intravascular Ultrasound]. ACTA ACUST UNITED AC 2021; 60:64-75. [PMID: 33522469 DOI: 10.18087/cardio.2020.12.n1304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/26/2020] [Indexed: 11/18/2022]
Abstract
Aim To evaluate structural characteristics of atherosclerotic plaques (ASP) by coronary computed tomography arteriography (CCTA) and intravascular ultrasound (IVUS).Material and methods This study included 37 patients with acute coronary syndrome (ACS). 64-detector-row CCTA, coronarography, and grayscale IVUS were performed prior to coronary stenting. The ASP length and burden, remodeling index (RI), and known CT signs of unstable ASP (presence of dot calcification, positive remodeling of the artery in the ASP area, irregular plaque contour, presence of a peripheral high-density ring and a low-density patch in the ASP). The ASP type and signs of rupture or thrombosis were determined by IVUS.Results The IVUS study revealed 45 unstable ASP (UASP), including 25 UASP with rupture and 20 thin-cap fibroatheromas (TCFA), and 13 stable ASP (SASP). No significant differences were found between distribution of TCFA and ASP with rupture among symptom-associated plaques (SAP, n=28) and non-symptom-associated plaques (NSAP, n=30). They were found in 82.1 and 73.3 % of cases, respectively (p>0.05), which indicated generalization of the ASP destabilization process in the coronary circulation. However, the incidence of mural thrombus was higher for SAP (53.5 and 16.6 % of ASP, respectively; p<0.001). There was no difference between UASP and SASP in the incidence of qualitative ASP characteristics or in values of quantitative ASP characteristics, including known signs of instability, except for the irregular contour, which was observed in 92.9 % of UASP and 46.1 % of SASP (p=0.0007), and patches with X-ray density ≤46 HU, which were detected in 83.3 % of UASP and 46.1 % of SASP (р=0.01). The presence of these CT criteria 11- and 7-fold increased the likelihood of unstable ASP (odd ratio (OR), 11.1 at 95 % confidence interval (CI), from 2.24 to 55.33 and OR, 7.0 at 95 % CI, from 5.63 to 8.37 for the former and the latter criterion, respectively).Conclusion According to IVUS data, two X-ray signs are most characteristic for UASP, the irregular contour and a patch with X-ray density ≤46 HU. The presence of these signs 11- and 7-fold, respectively, increases the likelihood of unstable ASP.
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Affiliation(s)
- I N Merkulova
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - M A Shariya
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - V M Mironov
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - M S Shabanova
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - T N Veselova
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - S A Gaman
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - N A Barysheva
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - R M Shakhnovich
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - N I Zhukova
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - T S Sukhinina
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - I I Staroverov
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
| | - S K Ternovoy
- Institute of Clinical Cardiology, National Medical Research Center of Cardiology, Ministry of Healthcare Russian Federation, Moscow
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8
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Kolossváry M, Park J, Bang JI, Zhang J, Lee JM, Paeng JC, Merkely B, Narula J, Kubo T, Akasaka T, Koo BK, Maurovich-Horvat P. Identification of invasive and radionuclide imaging markers of coronary plaque vulnerability using radiomic analysis of coronary computed tomography angiography. Eur Heart J Cardiovasc Imaging 2020; 20:1250-1258. [PMID: 30838375 PMCID: PMC6806259 DOI: 10.1093/ehjci/jez033] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 02/13/2019] [Indexed: 12/11/2022] Open
Abstract
Aims Identification of invasive and radionuclide imaging markers of coronary plaque vulnerability by a single, widely available non-invasive technique may provide the opportunity to identify vulnerable plaques and vulnerable patients in broad populations. Our aim was to assess whether radiomic analysis outperforms conventional assessment of coronary computed tomography angiography (CTA) images to identify invasive and radionuclide imaging markers of plaque vulnerability. Methods and results We prospectively included patients who underwent coronary CTA, sodium-fluoride positron emission tomography (NaF18-PET), intravascular ultrasound (IVUS), and optical coherence tomography (OCT). We assessed seven conventional plaque features and calculated 935 radiomic parameters from CTA images. In total, 44 plaques of 25 patients were analysed. The best radiomic parameters significantly outperformed the best conventional CT parameters to identify attenuated plaque by IVUS [fractal box counting dimension of high attenuation voxels vs. non-calcified plaque volume, area under the curve (AUC): 0.72, confidence interval (CI): 0.65–0.78 vs. 0.59, CI: 0.57–0.62; P < 0.001], thin-cap fibroatheroma by OCT (fractal box counting dimension of high attenuation voxels vs. presence of low attenuation voxels, AUC: 0.80, CI: 0.72–0.88 vs. 0.66, CI: 0.58–0.73; P < 0.001), and NaF18-positivity (surface of high attenuation voxels vs. presence of two high-risk features, AUC: 0.87, CI: 0.82–0.91 vs. 0.65, CI: 0.64–0.66; P < 0.001). Conclusion Coronary CTA radiomics identified invasive and radionuclide imaging markers of plaque vulnerability with good to excellent diagnostic accuracy, significantly outperforming conventional quantitative and qualitative high-risk plaque features. Coronary CTA radiomics may provide a more accurate tool to identify vulnerable plaques compared with conventional methods. Further larger population studies are warranted.
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Affiliation(s)
- Márton Kolossváry
- Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68. Varosmajor street, Budapest, Hungary
| | - Jonghanne Park
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, 101 Daehang-ro, Chongno-gu, Seoul, Republic of Korea
| | - Ji-In Bang
- Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehang-ro, Chongo-gu, Seoul, Republic of Korea
| | - Jinlong Zhang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, 101 Daehang-ro, Chongno-gu, Seoul, Republic of Korea
| | - Joo Myung Lee
- Department of Internal Medicine and Cardiovascular Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Irwon-dong, Seoul, Republic of Korea
| | - Jin Chul Paeng
- Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehang-ro, Chongo-gu, Seoul, Republic of Korea
| | - Béla Merkely
- Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68. Varosmajor street, Budapest, Hungary
| | - Jagat Narula
- Icahn School of Medicine at Mount Sinai Hospital, 1 Gustave L. Levy Place, New York, NY, USA
| | - Takashi Kubo
- Department of Cardiovascular Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama Prefecture, Japan
| | - Takashi Akasaka
- Department of Cardiovascular Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama Prefecture, Japan
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, 101 Daehang-ro, Chongno-gu, Seoul, Republic of Korea
| | - Pál Maurovich-Horvat
- Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68. Varosmajor street, Budapest, Hungary
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9
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Gijsen F, Katagiri Y, Barlis P, Bourantas C, Collet C, Coskun U, Daemen J, Dijkstra J, Edelman E, Evans P, van der Heiden K, Hose R, Koo BK, Krams R, Marsden A, Migliavacca F, Onuma Y, Ooi A, Poon E, Samady H, Stone P, Takahashi K, Tang D, Thondapu V, Tenekecioglu E, Timmins L, Torii R, Wentzel J, Serruys P. Expert recommendations on the assessment of wall shear stress in human coronary arteries: existing methodologies, technical considerations, and clinical applications. Eur Heart J 2020; 40:3421-3433. [PMID: 31566246 PMCID: PMC6823616 DOI: 10.1093/eurheartj/ehz551] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/09/2019] [Accepted: 09/23/2019] [Indexed: 01/09/2023] Open
Affiliation(s)
- Frank Gijsen
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Yuki Katagiri
- Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Peter Barlis
- Department of Medicine and Radiology, Melbourne Medical School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia.,Department of Cardiology, Northern Hospital, 185 Cooper Street, Epping, Australia.,St Vincent's Heart Centre, Building C, 41 Victoria Parade, Fitzroy, Australia
| | - Christos Bourantas
- Institute of Cardiovascular Sciences, University College of London, London, UK.,Department of Cardiology, Barts Heart Centre, London, UK.,School of Medicine and Dentistry, Queen Mary University London, London, UK
| | - Carlos Collet
- Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Umit Coskun
- Division of Cardiovascular Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Joost Daemen
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Jouke Dijkstra
- LKEB-Division of Image Processing, Department of Radiology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Elazer Edelman
- Division of Cardiovascular Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA.,Institute for Medical Engineering and Science, MIT, Cambridge, MA, USA
| | - Paul Evans
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, UK
| | - Kim van der Heiden
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Rod Hose
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, UK.,Department of Circulation and Imaging, NTNU, Trondheim, Norway
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea.,Institute of Aging, Seoul National University, Seoul, Korea
| | - Rob Krams
- School of Engineering and Materials Science Queen Mary University of London, London, UK
| | - Alison Marsden
- Departments of Bioengineering and Pediatrics, Institute of Computational and Mathematical Engineering, Stanford University, Stanford, CA, USA
| | - Francesco Migliavacca
- Laboratory of Biological Structure Mechanics (LaBS), Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy
| | - Yoshinobu Onuma
- Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Andrew Ooi
- Department of Mechanical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia
| | - Eric Poon
- Department of Mechanical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia
| | - Habib Samady
- Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Peter Stone
- Division of Cardiovascular Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kuniaki Takahashi
- Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Dalin Tang
- Department of Mathematics, Southeast University, Nanjing, China; Mathematical Sciences Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Vikas Thondapu
- Department of Medicine and Radiology, Melbourne Medical School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia.,Department of Mechanical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia.,Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Erhan Tenekecioglu
- Department of Interventional Cardiology, Thoraxcentre, Erasmus Medical Centre, Rotterdam, the Netherlands
| | - Lucas Timmins
- Department of Biomedical Engineering, University of Utah, Salt Lake City, UT.,Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT
| | - Ryo Torii
- Department of Mechanical Engineering, University College London, UK
| | - Jolanda Wentzel
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Patrick Serruys
- Erasmus University Medical Center, Rotterdam, the Netherlands.,Imperial College London, London, UK.,Melbourne School of Engineering, University of Melbourne, Melbourne, Australia
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10
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Sartoretti T, Eberhard M, Rüschoff JH, Pietsch H, Jost G, Nowak T, Schmidt B, Flohr T, Euler A, Alkadhi H. Photon-counting CT with tungsten as contrast medium: Experimental evidence of vessel lumen and plaque visualization. Atherosclerosis 2020; 310:11-16. [PMID: 32861961 DOI: 10.1016/j.atherosclerosis.2020.07.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/30/2020] [Accepted: 07/23/2020] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND AIMS We aimed to investigate the potential of a preclinical photon-counting detector CT (PCT) scanner with an experimental tungsten-based contrast medium for carotid artery imaging. METHODS A carotid artery specimen was imaged on a PCT system using the multi-energy bin option (pixel size 0.5 × 0.5 mm2; tube voltage 140 kVp, contrast media-dependent energy thresholds: iodine 20, 75 keV; tungsten 20, 68 keV) at two radiation doses (CTDIvol of 100 mGy and 10 mGy) with iodine and tungsten as contrast media at equal mass-concentrations. Standard CT, virtual non-calcium (VNCa) and calcium-only images were reconstructed. Subjective image quality (4-point Likert scale) was rated using histology as reference. Noise and attenuation measurements were performed. Simulations were conducted to assess the material-decomposition efficiency for different object diameters. RESULTS Image quality on VNCa images was significantly higher for tungsten at lower dose (reader 1/reader 2: 2, [2,2]/2, [2,2] vs 1.5, [2,1]/1, [1,1.75], p < 0.05). Noise was significantly lower at both dose levels for tungsten VNCa images as compared to iodine images (higher dose: tungsten 24 vs iodine 31; lower dose: tungsten 60 vs iodine 82; both p < 0.01). Simulations indicated improved material-decomposition efficiency for tungsten than for iodine pronounced at smaller object diameters. CONCLUSIONS PCT employing the multi-energy bin option in combination with tungsten as contrast media enables improved carotid artery imaging with respect to lumen and plaque visualization and image noise.
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Affiliation(s)
- Thomas Sartoretti
- Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Matthias Eberhard
- Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Jan Hendrik Rüschoff
- Department of Pathology, University Hospital Zurich, University of Zurich, Switzerland
| | | | | | | | | | | | - André Euler
- Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Hatem Alkadhi
- Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Switzerland.
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11
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Ramasamy A, Safi H, Moon J, Andiapen M, Rathod K, Maurovich-Horvat P, Bajaj R, Serruys P, Mathur A, Baumbach A, Pugliese F, Torii R, Bourantas C. Evaluation of the Efficacy of Computed Tomographic Coronary Angiography in Assessing Coronary Artery Morphology and Physiology: Rationale and Study Design. Cardiology 2020; 145:285-293. [DOI: 10.1159/000506537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 02/12/2020] [Indexed: 11/19/2022]
Abstract
Computed tomographic coronary angiography (CTCA) is a non-invasive imaging modality, which allows plaque burden and composition assessment and detection of plaque characteristics associated with increased vulnerability. In addition, CTCA-based coronary artery reconstruction enables local haemodynamic forces assessment, which regulate plaque formation and vascular inflammation and prediction of lesions that are prone to progress and cause events. However, the use of CTCA for vulnerable plaque detection in the clinical arena remains limited. To unlock the full potential of CTCA and enable its broad use, further work is needed to develop user-friendly processing tools that will allow fast and accurate analysis of CTCA, computational fluid dynamic modelling, and evaluation of the local haemodynamic forces. The present study aims to develop a seamless platform that will overcome the limitations of CTCA and enable fast and accurate evaluation of plaque morphology and physiology. We will analyse imaging data from 70 patients with coronary artery disease who will undergo state-of-the-art CTCA and near-infrared spectroscopy-intravascular ultrasound imaging and develop and train algorithms that will take advantage of the intravascular imaging data to optimise vessel segmentation and plaque characterisation. Furthermore, we will design an advanced module that will enable reconstruction of coronary artery anatomy from CTCA, blood flow simulation, shear stress estimation, and comprehensive visualisation of vessel pathophysiology. These advances are expected to facilitate the broad use of CTCA, not only for risk stratification but also for the evaluation of the effect of emerging therapies on plaque evolution.
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12
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Yuan M, Wu H, Li R, Yu M, Dai X, Zhang J. The value of quantified plaque analysis by dual-source coronary CT angiography to detect vulnerable plaques: a comparison study with intravascular ultrasound. Quant Imaging Med Surg 2020; 10:668-677. [PMID: 32269927 DOI: 10.21037/qims.2020.01.13] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background To investigate the diagnostic performance of quantified plaque analysis and high-risk plaque characterization by coronary computed tomography angiography (CCTA) for identifying thin-cap fibroatheroma (TCFA). Methods Patients who underwent both CCTA and intravascular ultrasound (IVUS) within 4 weeks were retrospectively included. CT-derived quantitative and qualitative parameters, including diameter stenosis, minimal lumen area (MLA), low attenuation plaque (LAP) volume napkin-ring sign (NRS), positive remodeling (PR) and spotty calcification, were recorded. TCFA lesions and non-TCFA lesions were determined by IVUS. Multivariate regression analysis was used to determine the independent predictors of TCFA lesions. Results Sixty-five patients (mean age: 69.8±9.2 years, 29 females) with 89 lesions were finally included. LAP and NRS were more frequently presented in the group of TCFA lesions. The mean LAP volume of TCFA lesions was significantly larger than that of non-TCFA lesions [16.5 (11.0-23.0) vs. 0 (0-1.5) mm3, P<0.001]. According to multivariate logistic regression analysis, LAP volume was the only significant predictor for IVUS-confirmed vulnerable plaques (odds ratio =3.294, 95% confidence interval: 1.177-9.223, P=0.023). LAP volume showed largest area under curve (AUC) for diagnosing TCFA lesions (AUC =0.901, 95% confidence interval: 0.819-0.954, P<0.0001). When using >8 mm3 as the best cutoff value, the diagnostic accuracy, sensitivity and specificity of LAP volume for predicting TCFA lesions were 91.0% (81/89), 84.6% (22/26) and 96.8% (61/63) respectively. Conclusions CT-derived LAP volume of TCFA lesions was significantly higher than those of non-TCFA lesions. LAP volume was the strongest predictor for TCFA lesions as validated by IVUS.
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Affiliation(s)
- Mingyuan Yuan
- Department of Radiology, Affiliated Zhoupu Hospital, Shanghai University of Medicine and Health Science, Shanghai 201318, China
| | - Hao Wu
- Department of Radiology, Affiliated Zhoupu Hospital, Shanghai University of Medicine and Health Science, Shanghai 201318, China
| | - Rongxian Li
- Department of Radiology, Affiliated Zhoupu Hospital, Shanghai University of Medicine and Health Science, Shanghai 201318, China
| | - Mengmeng Yu
- Institute of Diagnostic and Interventional Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Xu Dai
- Institute of Diagnostic and Interventional Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Jiayin Zhang
- Institute of Diagnostic and Interventional Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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13
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Kolossváry M, Karády J, Kikuchi Y, Ivanov A, Schlett CL, Lu MT, Foldyna B, Merkely B, Aerts HJ, Hoffmann U, Maurovich-Horvat P. Radiomics versus Visual and Histogram-based Assessment to Identify Atheromatous Lesions at Coronary CT Angiography: An ex Vivo Study. Radiology 2019; 293:89-96. [PMID: 31385755 PMCID: PMC6776230 DOI: 10.1148/radiol.2019190407] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 05/22/2019] [Accepted: 06/22/2019] [Indexed: 02/06/2023]
Abstract
Background Visual and histogram-based assessments of coronary CT angiography have limited accuracy in the identification of advanced lesions. Radiomics-based machine learning (ML) could provide a more accurate tool. Purpose To compare the diagnostic performance of radiomics-based ML with that of visual and histogram-based assessment of ex vivo coronary CT angiography cross sections to identify advanced atherosclerotic lesions defined with histologic examination. Materials and Methods In this prospective study, 21 coronary arteries from seven hearts obtained from male donors (mean age, 52.3 years ± 5.3) were imaged ex vivo with coronary CT angiography between February 23, 2009, and July 31, 2010. From 95 coronary plaques, 611 histologic cross sections were coregistered with coronary CT cross sections. Lesions were considered advanced if early fibroatheroma, late fibroatheroma, or thin-cap atheroma was present. CT cross sections were classified as showing homogeneous, heterogeneous, or napkin-ring sign plaques on the basis of visual assessment. The area of low attenuation (<30 HU) and the average Hounsfield unit were quantified. Radiomic parameters were extracted and used as inputs to ML algorithms. Eight radiomics-based ML models were trained on randomly selected cross sections (training set, 75% of the cross sections) to identify advanced lesions. Visual assessment, histogram-based assessment, and the best ML model were compared on the remaining 25% of the data (validation set) by using the area under the receiver operating characteristic curve (AUC) to identify advanced lesions. Results After excluding sections with no visible plaque (n = 134) and with heavy calcium (n = 32), 445 cross sections were analyzed. Of those 445 cross sections, 134 (30.1%) were advanced lesions. Visual assessment of the 445 cross sections indicated that 207 (46.5%) were homogeneous, 200 (44.9%) were heterogeneous, and 38 (8.5%) demonstrated the napkin-ring sign. A radiomics-based ML model incorporating 13 parameters outperformed visual assessment (AUC = 0.73 with 95% confidence interval [CI] of 0.63, 0.84 vs 0.65 with 95% CI of 0.56, 0.73, respectively; P = .04), area of low attenuation (AUC = 0.55 with 95% CI of 0.42, 0.68; P = .01), and average Hounsfield unit (AUC = 0.53 with 95% CI of 0.42, 0.65; P = .004) in the identification of advanced atheromatous lesions. Conclusion Radiomics-based machine learning analysis improves the discriminatory power of coronary CT angiography in the identification of advanced atherosclerotic lesions. Published under a CC BY 4.0 license.
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Affiliation(s)
- Márton Kolossváry
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Júlia Karády
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Yasuka Kikuchi
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Alexander Ivanov
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Christopher L. Schlett
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Michael T. Lu
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Borek Foldyna
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Béla Merkely
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Hugo J. Aerts
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Udo Hoffmann
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
| | - Pál Maurovich-Horvat
- From the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor St, 1122 Budapest, Hungary (M.K., J.K., B.M., P.M.H.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass (J.K., Y.K., A.I., M.T.L., B.F., H.J.A., U.H.); Center for Cause of Death Investigation, Faculty of Medicine, Hokkaido University, Hokkaido, Japan (Y.K.); Department for Diagnostic and Interventional Radiology, Medical Center-University of Freiburg, Freiburg, Germany (C.L.S.); and Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (H.J.A.)
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14
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Ferencik M, Mayrhofer T, Bittner DO, Emami H, Puchner SB, Lu MT, Meyersohn NM, Ivanov AV, Adami EC, Patel MR, Mark DB, Udelson JE, Lee KL, Douglas PS, Hoffmann U. Use of High-Risk Coronary Atherosclerotic Plaque Detection for Risk Stratification of Patients With Stable Chest Pain: A Secondary Analysis of the PROMISE Randomized Clinical Trial. JAMA Cardiol 2019; 3:144-152. [PMID: 29322167 DOI: 10.1001/jamacardio.2017.4973] [Citation(s) in RCA: 338] [Impact Index Per Article: 67.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Importance Coronary computed tomographic angiography (coronary CTA) can characterize coronary artery disease, including high-risk plaque. A noninvasive method of identifying high-risk plaque before major adverse cardiovascular events (MACE) could provide practice-changing optimizations in coronary artery disease care. Objective To determine whether high-risk plaque detected by coronary CTA was associated with incident MACE independently of significant stenosis (SS) and cardiovascular risk factors. Design, Setting, and Participants This prespecified nested observational cohort study was part of the Prospective Multicenter Imaging Study for Evaluation of Chest Pain (PROMISE) trial. All stable, symptomatic outpatients in this trial who required noninvasive cardiovascular testing and received coronary CTA were included and followed up for a median of 25 months. Exposures Core laboratory assessment of coronary CTA for SS and high-risk plaque (eg, positive remodeling, low computed tomographic attenuation, or napkin-ring sign). Main Outcomes and Measures The primary end point was an adjudicated composite of MACE (defined as death, myocardial infarction, or unstable angina). Results The study included 4415 patients, of whom 2296 (52%) were women, with a mean age of 60.5 years, a median atherosclerotic cardiovascular disease (ASCVD) risk score of 11, and a MACE rate of 3% (131 events). A total of 676 patients (15.3%) had high-risk plaques, and 276 (6.3%) had SS. The presence of high-risk plaque was associated with a higher MACE rate (6.4% vs 2.4%; hazard ratio, 2.73; 95% CI, 1.89-3.93). This association persisted after adjustment for ASCVD risk score and SS (adjusted hazard ratio [aHR], 1.72; 95% CI, 1.13-2.62). Adding high-risk plaque to the ASCVD risk score and SS assessment led to a significant continuous net reclassification improvement (0.34; 95% CI, 0.02-0.51). Presence of high-risk plaque increased MACE risk among patients with nonobstructive coronary artery disease relative to patients without high-risk plaque (aHR, 4.31 vs 2.64; 95% CI, 2.25-8.26 vs 1.49-4.69). There were no significant differences in MACE in patients with SS and high-risk plaque as opposed to those with SS but not high-risk plaque (aHR, 8.68 vs. 9.31; 95% CI, 4.25-17.73 vs 4.21-20.61). High-risk plaque was a stronger predictor of MACE in women (aHR, 2.41; 95% CI, 1.25-4.64) vs men (aHR, 1.40; 95% CI, 0.81-2.39) and younger patients (aHR, 2.33; 95% CI, 1.20-4.51) vs older ones (aHR, 1.36; 95% CI, 0.77-2.39). Conclusions and Relevance High-risk plaque found by coronary CTA was associated with a future MACE in a large US population of outpatients with stable chest pain. High-risk plaque may be an additional risk stratification tool, especially in patients with nonobstructive coronary artery disease, younger patients, and women. The importance of findings is limited by low absolute MACE rates and low positive predictive value of high-risk plaque. Trial Registration clinicaltrials.gov Indentifier: NCT01174550.
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Affiliation(s)
- Maros Ferencik
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland.,Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Thomas Mayrhofer
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston.,School of Business Studies, Stralsund University of Applied Sciences, Stralsund, Germany
| | - Daniel O Bittner
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston.,Department of Cardiology, University Hospital Erlangen, Friedrich-Alexander University, Erlangen-Nürnberg, Germany
| | - Hamed Emami
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Stefan B Puchner
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston.,Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Michael T Lu
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Nandini M Meyersohn
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Alexander V Ivanov
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Elizabeth C Adami
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Manesh R Patel
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, North Carolina
| | - Daniel B Mark
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, North Carolina
| | - James E Udelson
- Tufts University School of Medicine and the Cardiovascular Center, Tufts Medical Center, Boston, Massachusetts
| | - Kerry L Lee
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, North Carolina
| | - Pamela S Douglas
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, North Carolina
| | - Udo Hoffmann
- Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston
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15
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Nakanishi R, Motoyama S, Leipsic J, Budoff MJ. How accurate is atherosclerosis imaging by coronary computed tomography angiography? J Cardiovasc Comput Tomogr 2019; 13:254-260. [DOI: 10.1016/j.jcct.2019.06.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/11/2019] [Accepted: 06/10/2019] [Indexed: 02/01/2023]
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16
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Foldyna B, Lo J, Mayrhofer T, Grinspoon SK, Hoffmann U, Lu MT. Individual coronary plaque changes on serial CT angiography: Within-patient heterogeneity, natural history, and statin effects in HIV. J Cardiovasc Comput Tomogr 2019; 14:144-148. [PMID: 31451438 DOI: 10.1016/j.jcct.2019.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 08/08/2019] [Accepted: 08/19/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND It is not known how the volume and composition of individual coronary plaques change over time in HIV-infected people and whether statins influence these changes. METHODS We included forty adults with HIV and subclinical coronary atherosclerosis who participated in a randomized controlled trial of placebo vs. atorvastatin. All participants underwent serial coronary computed tomography angiography at baseline and after one year. Individual coronary plaques were measured to assess the within-patient variability of plaque volume and composition changes. Left-main, proximal-right, proximal-left-anterior descending, and proximal-circumflex coronary segments were considered proximal. Plaque voxels with attenuation ≤130 Hounsfield Units (HU) were defined as noncalcified and further divided into fatty (<40HU) and fibrotic (40-130HU) components. RESULTS In 37 patients who completed the trial, there were 92 coronary plaques. Individual plaque changes varied highly, with some plaques increasing while others decreased in the same patient. Overall, 77% vs. 51% of individual plaques progressed, while 24% vs. 49% regressed in placebo and statin, respectively (p = 0.016). Substantial increases in proximal plaques drove the progression in placebo. Statins suppressed these large increases, resulting in a 3-fold lower variance in plaque volume change compared to placebo (p = 0.025). Statins suppressed progression of fibrotic (p = 0.015) plaque, with a trend towards reducing fatty (p = 0.075) plaque and no significant effect on the calcified portion (p = 0.203). CONCLUSION In persons with HIV, a population with increased atherosclerosis burden and cardiovascular risk, individual coronary plaque changes vary within a given individual. Large increases in proximal plaques characterize progression, and statins act in part by stabilizing progressing plaques by reducing fatty and fibrotic plaque components, without influencing the calcified portion.
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Affiliation(s)
- Borek Foldyna
- Cardiovascular Imaging Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Clinic for Radiology, Cardiovascular Center, Bad Neustadt an der Saale, Germany.
| | - Janet Lo
- Program in Nutritional Metabolism, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Thomas Mayrhofer
- Cardiovascular Imaging Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; School of Business Studies, Stralsund University of Applied Sciences, Stralsund, Germany
| | - Steven K Grinspoon
- Program in Nutritional Metabolism, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Udo Hoffmann
- Cardiovascular Imaging Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael T Lu
- Cardiovascular Imaging Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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17
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Engel LC, Landmesser U, Goehler A, Gigengack K, Wurster TH, Manes C, Girke G, Jaguszewski M, Skurk C, Leistner DM, Lauten A, Schuster A, Noutsias M, Hamm B, Botnar RM, Bigalke B, Makowski MR. Noninvasive Imaging of Endothelial Damage in Patients With Different HbA 1c Levels: A Proof-of-Concept Study. Diabetes 2019; 68:387-394. [PMID: 30487264 DOI: 10.2337/db18-0239] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 11/06/2018] [Indexed: 11/13/2022]
Abstract
The aim of this study was to compare endothelial permeability, which is considered a hallmark of coronary artery disease, between patients with different HbA1c levels using an albumin-binding magnetic resonance (MR) probe. This cross-sectional study included 26 patients with clinical indication for X-ray angiography who were classified into three groups according to HbA1c level (<5.7% [<39 mmol/mol], 5.7-6.4% [39-47 mmol/mol], and ≥6.5% [48 mmol/mol]). Subjects underwent gadofosveset-enhanced coronary magnetic resonance and X-ray angiography including optical coherence within 24 h. Contrast-to-noise ratios (CNRs) were assessed to measure the probe uptake in the coronary wall by coronary segment, excluding those with culprit lesions in X-ray angiography. In the group of patients with HbA1c levels between 5.7 and 6.4%, 0.30 increased normalized CNR values were measured, compared with patients with HbA1c levels <5.7% (0.30 [95% CI 0.04, 0.57]). In patients with HbA1c levels ≥6.5%, we found 0.57 higher normalized CNR values compared with patients with normal HbA1c levels (0.57 [95% CI 0.28, 0.85]) and 0.26 higher CNR values for patients with HbA1c level ≥6.5% compared with patients with HbA1c levels between 5.7 and 6.4% (0.26 [95% CI -0.04, 0.57]). Additionally, late atherosclerotic lesions were more common in patients with high HbA1c levels (HbA1c ≥6.5%, n = 14 [74%]; HbA1c 5.7-6.4%, n = 6 [60%]; and HbA1c <5.7%, n = 10 [53%]). In conclusion, coronary MRI in combination with an albumin-binding MR probe suggests that both patients with intermediate and patients with high HbA1c levels are associated with a higher extent of endothelial damage of the coronary arteries compared with patients with HbA1c levels <5.7%.
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Affiliation(s)
- Leif-Christopher Engel
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
| | - Ulf Landmesser
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Berlin, Germany
| | - Alexander Goehler
- Department of Radiology, Brigham's and Women Hospital and Harvard Medical School, Boston, MA
| | - Kevin Gigengack
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas-Heinrich Wurster
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
| | - Costantina Manes
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
| | - Georg Girke
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
| | - Milosz Jaguszewski
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
| | - Carsten Skurk
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
| | - David M Leistner
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
| | - Alexander Lauten
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Berlin, Germany
| | - Andreas Schuster
- Department of Cardiology and Pulmonology, Georg-August-University, German Centre for Cardiovascular Research (DZHK), partner site Göttingen, Germany
- Department of Cardiology, Royal North Shore Hospital, The Kolling Institute, Nothern Clinical School, University of Sydney, Sydney, Australia
| | - Michel Noutsias
- Mid-German Heart Center, Division of Cardiology, Angiology and Intensive Medical Care, Department of Internal Medicine III, University Hospital Halle, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany
| | - Bernd Hamm
- Klinik für Radiologie, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Rene M Botnar
- Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Santiago, Chile
- Division of Imaging Sciences and Biomedical Engineering, King's College London, London, U.K
| | - Boris Bigalke
- Klinik für Kardiologie, Charité Campus Benjamin Franklin, Universitätsmedizin Berlin, Berlin, Germany
| | - Marcus R Makowski
- Klinik für Radiologie, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Quantitative measurement of lipid rich plaque by coronary computed tomography angiography: A correlation of histology in sudden cardiac death. Atherosclerosis 2018; 275:426-433. [DOI: 10.1016/j.atherosclerosis.2018.05.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/08/2018] [Accepted: 05/16/2018] [Indexed: 11/21/2022]
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Wieringa WG, Lexis CPH, Lipsic E, van der Werf HW, Burgerhof JGM, Hagens VE, Bartels GL, Broersen A, Schurer RA, Tan ES, van der Harst P, van den Heuvel AFM, Willems TP, Pundziute G. In vivo coronary lesion differentiation with computed tomography angiography and intravascular ultrasound as compared to optical coherence tomography. J Cardiovasc Comput Tomogr 2017; 11:111-118. [PMID: 28169175 DOI: 10.1016/j.jcct.2017.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 12/20/2016] [Accepted: 01/14/2017] [Indexed: 11/18/2022]
Abstract
BACKGROUND In vitro studies have shown the feasibility of coronary lesion grading with computed tomography angiography (CTA), intravascular ultrasound (IVUS) and optical coherence tomography (OCT) as compared to histology, whereas OCT had the highest discriminatory capacity. OBJECTIVE We investigated the ability of CTA and IVUS to differentiate between early and advanced coronary lesions in vivo, OCT serving as standard of reference. METHODS Multimodality imaging was prospectively performed in 30 NSTEMI patients. Plaque characteristics were assessed in 1083 cross-sections of 30 culprit lesions, co-registered among modalities. Absence of plaque, fibrous and fibrocalcific plaque on OCT were defined as early plaque, whereas lipid rich-plaque on OCT was defined as advanced plaque. Odds ratios adjusted for clustering were calculated to assess associations between plaque types on CTA and IVUS with early or advanced plaque. RESULTS Normal findings on CTA as well as on IVUS were associated with early plaque. Non-calcified, calcified plaques and the napkin ring sign on CTA were associated with advanced plaque. On IVUS, fatty and calcified plaques were associated with advanced plaque. CONCLUSIONS In vivo coronary plaque characteristics on CTA and IVUS are associated with plaque characteristics on OCT. Of note, normal findings on CTA and IVUS relate to early lesions on OCT. Nevertheless, multiple plaque features on CTA and IVUS are related to advanced plaques on OCT, which may make it difficult to use qualitative plaque assessment in clinical practice.
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Affiliation(s)
- Wouter G Wieringa
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Chris P H Lexis
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Erik Lipsic
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Hindrik W van der Werf
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Johannes G M Burgerhof
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands
| | - Vincent E Hagens
- Ommelander Hospitals Group, Department of Cardiology, The Netherlands
| | - G Louis Bartels
- Martini Hospital, Department of Cardiology, Groningen, The Netherlands
| | - Alexander Broersen
- University of Leiden, Leiden University Medical Center, Department of Radiology, Division of Image Processing, Leiden, The Netherlands
| | - Remco A Schurer
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Eng-Shiong Tan
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Pim van der Harst
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Ad F M van den Heuvel
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands
| | - Tineke P Willems
- University of Groningen, University Medical Center Groningen, Department of Radiology, Groningen, The Netherlands
| | - Gabija Pundziute
- University of Groningen, University Medical Center Groningen, Thorax Center, Department of Cardiology, Groningen, The Netherlands.
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Iterative Image Reconstruction Improves the Accuracy of Automated Plaque Burden Assessment in Coronary CT Angiography: A Comparison With Intravascular Ultrasound. AJR Am J Roentgenol 2017; 208:777-784. [PMID: 28177655 DOI: 10.2214/ajr.16.17187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE The purpose of this study was to determine whether use of iterative image reconstruction algorithms improves the accuracy of coronary CT angiography (CCTA) compared with intravascular ultrasound (IVUS) in semiautomated plaque burden assessment. MATERIALS AND METHODS CCTA and IVUS images of seven coronary arteries were acquired ex vivo. CT images were reconstructed with filtered back projection (FBP) and adaptive statistical (ASIR) and model-based (MBIR) iterative reconstruction algorithms. Cross-sectional images of the arteries were coregistered between CCTA and IVUS in 1-mm increments. In CCTA, fully automated (without manual corrections) and semiautomated (allowing manual corrections of vessel wall boundaries) plaque burden assessments were performed for each of the reconstruction algorithms with commercially available software. In IVUS, plaque burden was measured manually. Agreement between CCTA and IVUS was determined with Pearson correlation. RESULTS A total of 173 corresponding cross sections were included. The mean plaque burden measured with IVUS was 63.39% ± 10.63%. With CCTA and the fully automated technique, it was 54.90% ± 11.70% with FBP, 53.34% ± 13.11% with ASIR, and 55.35% ± 12.22% with MBIR. With CCTA and the semiautomated technique mean plaque burden was 54.90% ± 11.76%, 53.40% ± 12.85%, 57.09% ± 11.05%. Manual correction of the semiautomated assessments was performed in 39% of all cross sections and improved plaque burden correlation with the IVUS assessment independently of reconstruction algorithm (p < 0.0001). Furthermore, MBIR was superior to FBP and ASIR independently of assessment method (semiautomated, r = 0.59 for FBP, r = 0.52 for ASIR, r = 0.78 for MBIR, all p < 0.001; fully automated, r = 0.40 for FBP, r = 0.37 for ASIR, r = 0.53 for MBIR, all p < 0.001). CONCLUSION For the quantification of plaque burden with CCTA, MBIR led to better correlation with IVUS than did traditional reconstruction algorithms such as FBP, independently of the use of a fully automated or semiautomated assessment approach. The highest accuracy for quantifying plaque burden with CCTA can be achieved by using MBIR data with semiautomated assessment.
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21
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Xie Z, Dong N, Sun R, Liu X, Gu X, Sun Y, Du H, Dai J, Liu Y, Hou J, Tian J, Yu B. Relation between baseline plaque features and subsequent coronary artery remodeling determined by optical coherence tomography and intravascular ultrasound. Oncotarget 2017; 8:4234-4244. [PMID: 27992371 PMCID: PMC5354827 DOI: 10.18632/oncotarget.13959] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 12/07/2016] [Indexed: 11/25/2022] Open
Abstract
Atherosclerosis often leads to myocardial infarction and stroke. We examined the influence of baseline plaque characteristics on subsequent vascular remodeling in response to changes in plaque size. Using optical coherence tomography (OCT) and intravascular ultrasound (IVUS), we examined 213 plaques from 138 patients with acute coronary syndrome at baseline and repeated IVUS at the 12-month follow-up. The change in external elastic membrane (EEM) area for each 1 mm2 change in plaque area (i.e., the slope of the regression line) was calculated as a measure of vascular remodeling capacity. In plaques with static positive remodeling, the slope was smaller than in plaques without static positive remodeling. In addition, the slope of the regression line for lesions with a large plaque burden was much smaller than that for lesions with a small plaque burden. Multivariate linear regression analysis showed that diabetes, calcification and static positive remodeling were inversely and independently associated with the level of change in EEM area/change in plaque area. Lesions with a large plaque burden, calcifications or static positive remodeling had less remodeling capacity, and calcification and static positive remodeling were independent predictors of reduced subsequent remodeling. Therefore, calcifications and static positive remodeling could be used as morphological biomarkers to predict decreased subsequent arterial remodeling.
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Affiliation(s)
- Zulong Xie
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Nana Dong
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Rong Sun
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Xinxin Liu
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Xia Gu
- Department of Cardiology, Heilongjiang Provincial Hospital, Harbin, China
| | - Yong Sun
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Hongwei Du
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Jiannan Dai
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Youbin Liu
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Jingbo Hou
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Jinwei Tian
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Bo Yu
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.,The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
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22
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Giannopoulos AA, Chatzizisis YS, Maurovich-Horvat P, Antoniadis AP, Hoffmann U, Steigner ML, Rybicki FJ, Mitsouras D. Quantifying the effect of side branches in endothelial shear stress estimates. Atherosclerosis 2016; 251:213-218. [PMID: 27372207 DOI: 10.1016/j.atherosclerosis.2016.06.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/08/2016] [Accepted: 06/22/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND AIMS Low and high endothelial shear stress (ESS) is associated with coronary atherosclerosis progression and high-risk plaque features. Coronary ESS is currently assessed via computational fluid dynamic (CFD) simulation of coronary blood flow in the lumen geometry determined from invasive imaging such as intravascular ultrasound and optical coherence tomography. This process typically omits side branches of the target vessel in the CFD model as invasive imaging of those vessels is not usually clinically-indicated. The purpose of this study was to determine the extent to which this simplification affects the determination of those regions of the coronary endothelium subjected to pathologic ESS. METHODS We determined the diagnostic accuracy of ESS profiling without side branches to detect pathologic ESS in the major coronary arteries of 5 hearts imaged ex vivo with computed tomography angiography (CTA). ESS of the three major coronary arteries was calculated both without (test model), and with (reference model) inclusion of all side branches >1.5 mm in diameter, using previously-validated CFD approaches. Diagnostic test characteristics (accuracy, sensitivity, specificity and negative and positive predictive value [NPV/PPV]) with respect to the reference model were assessed for both the entire length as well as only the proximal portion of each major coronary artery, where the majority of high-risk plaques occur. RESULTS Using the model without side branches overall accuracy, sensitivity, specificity, NPV and PPV were 83.4%, 54.0%, 96%, 95.9% and 55.1%, respectively to detect low ESS, and 87.0%, 67.7%, 90.7%, 93.7% and 57.5%, respectively to detect high ESS. When considering only the proximal arteries, test characteristics differed for low and high ESS, with low sensitivity (67.7%) and high specificity (90.7%) to detect low ESS, and low sensitivity (44.7%) and high specificity (95.5%) to detect high ESS. CONCLUSIONS The exclusion of side branches in ESS vascular profiling studies greatly reduces the ability to detect regions of the major coronary arteries subjected to pathologic ESS. Single-conduit models can in general only be used to rule out pathologic ESS.
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Affiliation(s)
- Andreas A Giannopoulos
- Applied Imaging Science Laboratory, Radiology Department, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Pal Maurovich-Horvat
- MTA-SE Lendület Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Antonios P Antoniadis
- Cardiovascular Division, Brigham and Women's Hospital, Boston, MA, USA; Cardiovascular Department, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Udo Hoffmann
- Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
| | - Michael L Steigner
- Applied Imaging Science Laboratory, Radiology Department, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Frank J Rybicki
- Applied Imaging Science Laboratory, Radiology Department, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Radiology, The Ottawa Hospital, The University of Ottawa, Ontario, ON, Canada
| | - Dimitrios Mitsouras
- Applied Imaging Science Laboratory, Radiology Department, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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Abstract
OBJECTIVE The objective of this study was to assess the potential of grating-based phase-contrast computed tomography (gb-PCCT) for the detection and characterization of human coronary artery disease in an experimental ex vivo validation study. MATERIALS AND METHODS The study was approved by the institutional review board, and informed consent was obtained from all patients. Specimens were examined using a conventional low-coherence x-ray tube (40 kV) and a Talbot-Lau grating interferometer. Histopathologic assessment was used as the standard of reference. Signal characteristics of calcified, fibrous (FIB), and lipid-rich (LIP) tissue were visually and quantitatively assessed by phase-contrast Hounsfield units (HU). Conventional absorption-based HU values were also measured. Conservative measurements of diagnostic accuracy for the detection and differentiation of plaque components as well as quantitative measurements of vessel dimensions were obtained, and receiver operating characteristic curve analysis for plaque differentiation was performed. RESULTS A total of 15 coronary arteries from 5 subjects were available for analysis (386 sections). Calcified, FIB, and LIP displayed distinct gb-PCCT signal criteria. The diagnostic accuracy of gb-PCCT was high with sensitivity, specificity, and negative and positive predictive values of 0.89 or greater for all plaque components with good interrater agreement (к ≥ 0.88). In addition, quantitative measurements of vessel dimensions in gb-PCCT were strongly correlated with measurements obtained from histopathology (Pearson R ≥ 0.86). Finally, phase-contrast Hounsfield units were superior to conventional HU in differentiating FIB and LIP (receiver operating characteristic analysis, 0.86 vs. 0.77, respectively; P < 0.05). CONCLUSIONS In an ex vivo setting, gb-PCCT provides improved differentiation and quantification of coronary atherosclerotic plaque and may thus serve as a tool for nondestructive histopathology.
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AHA classification of coronary and carotid atherosclerotic plaques by grating-based phase-contrast computed tomography. Eur Radiol 2015; 26:3223-33. [PMID: 26679184 DOI: 10.1007/s00330-015-4143-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 07/20/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To evaluate the potential of grating-based phase-contrast computed-tomography (gb-PCCT) to classify human carotid and coronary atherosclerotic plaques according to modified American Heart Association (AHA) criteria. METHODS Experiments were carried out at a laboratory-based set-up consisting of X-ray tube (40 kVp), grating-interferometer and detector. Eighteen human carotid and coronary artery specimens were examined. Histopathology served as the standard of reference. Vessel cross-sections were classified as AHA lesion type I/II, III, IV/V, VI, VII or VIII plaques by two independent reviewers blinded to histopathology. Conservative measurements of diagnostic accuracies for the detection and differentiation of plaque types were evaluated. RESULTS A total of 127 corresponding gb-PCCT/histopathology sections were analyzed. Based on histopathology, lesion type I/II was present in 12 (9.5 %), III in 18 (14.2 %), IV/V in 38 (29.9 %), VI in 16 (12.6 %), VII in 34 (26.8 %) and VIII in 9 (7.0 %) cross-sections. Sensitivity, specificity and positive and negative predictive value were ≥0.88 for most analyzed plaque types with a good level of agreement (Cohen's kappa = 0.90). Overall, results were better in carotid (kappa = 0.97) than in coronary arteries (kappa = 0.85). Inter-observer agreement was high with kappa = 0.85, p < 0.0001. CONCLUSIONS These results indicate that gb-PCCT can reliably classify atherosclerotic plaques according to modified AHA criteria with excellent agreement to histopathology. KEY POINTS • Different atherosclerotic plaque types display distinct morphological features in phase-contrast CT. • Phase-contrast CT can detect and differentiate AHA plaque types. • Calcifications caused streak artefacts and reduced sensitivity in type VI lesions. • Overall agreement was higher in carotid than in coronary arteries.
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25
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Bilolikar AN, Goldstein JA, Madder RD, Chinnaiyan KM. Plaque disruption by coronary computed tomographic angiography in stable patients vs. acute coronary syndrome: a feasibility study. Eur Heart J Cardiovasc Imaging 2015; 17:247-59. [PMID: 26553728 DOI: 10.1093/ehjci/jev281] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 09/16/2015] [Indexed: 11/14/2022] Open
Abstract
AIMS This study was designed to determine whether coronary CT angiography (CTA) can detect features of plaque disruption in clinically stable patients and to compare lesion prevalence and features between stable patients and those with acute coronary syndrome (ACS). METHODS We retrospectively identified patients undergoing CTA, followed by invasive coronary angiography (ICA) within 60 days. Quantitative 3-vessel CTA lesion analysis was performed on all plaques ≥25% stenosis to assess total plaque volume, low attenuation plaque (LAP, <50 HU) volume, and remodelling index. Plaques were qualitatively assessed for CTA features of disruption, including ulceration and intra-plaque dye penetration (IDP). ICA was employed as a reference standard for disruption. A total of 145 (94 ACS and 51 stable) patients were identified. By CTA, plaque disruption was evident in 77.7% of ACS cases. Although more common among those with ACS, CTA also detected plaque disruption in 37.3% of clinically stable patients (P < 0.0001). CONCLUSIONS Clinically stable patients commonly manifest plaques with features of disruption as determined by CTA. Though the prevalence of plaque disruption is less than patients with ACS, these findings support the concept that some clinically stable patients may harbour 'silent' disrupted plaques. These findings may have implications for detection of 'at risk' plaques and patients.
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Affiliation(s)
- Abhay N Bilolikar
- Department of Cardiovascular Medicine, Beaumont Health System, 3601 W. Thirteen Mile Road, Royal Oak, MI 48073, USA
| | - James A Goldstein
- Department of Cardiovascular Medicine, Beaumont Health System, 3601 W. Thirteen Mile Road, Royal Oak, MI 48073, USA
| | - Ryan D Madder
- Frederik Meijer Heart and Vascular Institute, Spectrum Health Medical Center, Grand Rapids, MI, USA
| | - Kavitha M Chinnaiyan
- Department of Cardiovascular Medicine, Beaumont Health System, 3601 W. Thirteen Mile Road, Royal Oak, MI 48073, USA
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Ijichi T, Nakazawa G, Torii S, Nakano M, Yoshikawa A, Morino Y, Ikari Y. Evaluation of coronary arterial calcification – Ex-vivo assessment by optical frequency domain imaging. Atherosclerosis 2015; 243:242-7. [DOI: 10.1016/j.atherosclerosis.2015.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 08/08/2015] [Accepted: 09/04/2015] [Indexed: 10/23/2022]
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Mattesini A, Bellandi B, Valente S, Parodi G. Diagnosis and Evaluation of Stent Thrombosis with Optical Coherence Tomography. Interv Cardiol Clin 2015; 4:295-307. [PMID: 28581946 DOI: 10.1016/j.iccl.2015.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Stent thrombosis (ST) is a rare complication of percutaneous coronary interventions (PCI), especially with drug-eluting stents. ST presents as acute myocardial infarction requiring emergent repeat PCI; optimal reperfusion occurs in two-thirds of patients. As a result, ST has been associated with a high mortality rate and a high rate of recurrent thrombosis. We discuss the use of optical coherence tomography (OCT) for the diagnosis and evaluation of ST. OCT-guided ST management seems a feasible, safe, and appropriate approach. Intracoronary assesses the efficacy of coronary thrombus removal procedures and detects the prevalent stent-related factor that caused ST.
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Affiliation(s)
- Alessio Mattesini
- Department of Cardiology, Careggi Hospital, Largo Brambilla n 3, Florence 50100, Italy
| | - Benedetta Bellandi
- Department of Cardiology, Careggi Hospital, Largo Brambilla n 3, Florence 50100, Italy
| | - Serafina Valente
- Department of Cardiology, Careggi Hospital, Largo Brambilla n 3, Florence 50100, Italy
| | - Guido Parodi
- Department of Cardiology, Careggi Hospital, Largo Brambilla n 3, Florence 50100, Italy.
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Iterative image reconstruction algorithms in coronary CT angiography improve the detection of lipid-core plaque – a comparison with histology. Eur Radiol 2014; 25:15-23. [DOI: 10.1007/s00330-014-3404-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 08/14/2014] [Indexed: 10/24/2022]
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Tian J, Ren X, Uemura S, Dauerman H, Prasad A, Toma C, Jia H, Abtahian F, Vergallo R, Hu S, McNulty I, Lee H, Lee S, Yu B, Jang IK. Spatial heterogeneity of neoatherosclerosis and its relationship with neovascularization and adjacent plaque characteristics: optical coherence tomography study. Am Heart J 2014; 167:884-92.e2. [PMID: 24890539 DOI: 10.1016/j.ahj.2014.03.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 03/19/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUND Development of neoatherosclerosis (NA) has been reported to be a potential cause of late stent failure. However, the distribution of NA and its relationship with neovascularization (NV) and adjacent plaque characteristics remain unclear. METHODS We investigated 167 stents (40 bare-metal stents, 84 sirolimus-eluting stents, and 43 everolimus-eluting stents) with optical coherence tomography. Each stent was divided into the proximal section (PS), mid section (MS) and distal section (DS). Neoatherosclerosis was defined as lipid-laden neointima or calcification inside stent. Adjacent plaque characteristics were evaluated within 5 mm proximal and distal reference segments. RESULTS Neoatherosclerosis was more frequent in PS and DS than in MS (PS 19.8% vs. MS 3.6% vs. DS 21%: PS vs. MS, P < .001: MS vs. DS, P < .001). Neovascularization in PS and DS was also more prevalent compared with that in MS (PS 15% vs. MS 5.4% vs. DS 13.8%: PS vs. MS, P = .001: MS vs. DS, P = .001). Neoatherosclerosis was more frequently observed in stents with intraintima NV (68.6% vs. 20.5%, P < .001). The incidence of NA was higher, when adjacent plaque was lipid (43.2% with lipid plaque vs. 12.2% without lipid plaque, P < .001). CONCLUSION Neoatherosclerosis occurs more frequently at PS and DS. Neoatherosclerosis was associated with NV and adjacent lipid plaque, suggesting potential interrelationship between development of NA and NV and adjacent plaque characteristics.
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Sanchez OD, Sakakura K, Otsuka F, Yahagi K, Virmani R, Joner M. Expectations and limitations of contemporary intravascular imaging: lessons learned from pathology. Expert Rev Cardiovasc Ther 2014; 12:601-11. [PMID: 24738595 DOI: 10.1586/14779072.2014.902749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Acute coronary syndrome is the leading cause of death worldwide and plaque rupture is the most common underlying mechanism of coronary thrombosis. During the last 2 decades the understanding of atherosclerotic plaque progression advanced dramatically and pathology studies provided fundamental insights of underlying plaque morphology, which paved the way for invasive imaging modalities, which bring a new area of atherosclerotic plaque characterization in vivo. The development of intravascular ultrasound (IVUS) allowed the field to evaluate the principles of vascular anatomy, which is often underestimated by coronary angiography. Furthermore, IVUS image technologies were developed to obtain improved characterization of plaque composition. However, since spatial resolution of IVUS is insufficient to distinguish details of plaque morphology, a broad adoption of this technology in clinical practice was missing. Optical coherence tomography is a light-based imaging modality with higher spatial resolution compared to IVUS, which enables the assessment of vascular anatomy with great detail.
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Abstract
Atherosclerosis imaging strategies can delineate characteristics of plaques at risk of rupture and thrombosis. Structural plaque imaging identifies high-risk plaque features, including lipid pools, thin fibrous caps, and intraplaque hemorrhage. New molecular imaging techniques complement structural imaging approaches by illuminating important features of plaque biology, with a prominent focus on detecting inflammation as a high-risk phenotype. As we unravel the molecular and structural characteristics underlying thrombosis-prone plaques, there is significant promise for eventual early identification and prediction of atherosclerotic plaque complications before they occur. Here we focus on recent imaging insights into high-risk arterial plaques, the etiologic agent of acute myocardial infarction, stroke, and sudden cardiac death.
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Affiliation(s)
- Eric A Osborn
- Cardiology Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Histogram analysis of lipid-core plaques in coronary computed tomographic angiography: ex vivo validation against histology. Invest Radiol 2014; 48:646-53. [PMID: 23614976 DOI: 10.1097/rli.0b013e31828fdf9f] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE In coronary computed tomographic angiography (CTA), low attenuation of coronary atherosclerotic plaque is associated with lipid-rich plaques. However, an overlap in Hounsfield units (HU) between fibrous and lipid-rich plaque as well as an influence of luminal enhancement on plaque attenuation was observed and may limit accurate detection of lipid-rich plaques by CTA. We sought to determine whether the quantitative histogram analysis improves accuracy of the detection of lipid-core plaque (LCP) in ex vivo hearts by validation against histological analysis. MATERIALS AND METHODS Human donor hearts were imaged with a 64-slice computed tomographic scanner using a standard coronary CTA protocol, optical coherence tomography (OCT), a histological analysis. Lipid-core plaque was defined in the histological analysis as any fibroatheroma with a lipid/necrotic core diameter of greater than 200 μm and a circumference greater than 60 degrees as well as a cap thickness of less than 450 μm. In OCT, lipid-rich plaque was determined as a signal-poor region with diffuse borders in 2 quadrants or more. In CTA, the boundaries of the noncalcified plaque were manually traced. The absolute and relative areas of low attenuation plaque based on pixels with less than 30, less than 60, and less than 90 HU were calculated using quantitative histogram analysis. RESULTS From 5 hearts, a total of 446 cross sections were coregistered between CTA and the histological analysis. Overall, 55 LCPs (12%) were identified by the histological analysis. In CTA, the absolute and relative areas of low attenuation plaque less than 30, less than 60, and less than 90 HU were 0.14 (0.31) mm2 (4.22% [9.02%]), 0.69 (0.95) mm2 (18.28% [21.22%]), and 1.35 (1.54) mm2 (35.65% [32.07%]), respectively. The low attenuation plaque area correlated significantly with histological lipid content (lipid/necrotic core size [in square millimeter] and a portion of lipid/necrotic core on the entire plaque) at all thresholds but was the strongest at less than 60 HU (r = 0.53 and r = 0.48 for the absolute and relative areas, respectively). Using a threshold of 1.0 mm2 or greater, the absolute plaque area of less than 60 HU in CTA yielded 69% sensitivity and 80% specificity to detect LCP, whereas sensitivity and specificity were 73% and 71% for using 25.0% or higher relative area less than 60 HU. The discriminatory ability of CTA for LCP was similar between the absolute and relative areas (the area under the curve, 0.744 versus 0.722; P = 0.37). Notably, the association of the low attenuation plaque area in CTA with LCP was not altered by the luminal enhancement for the relative (P = 0.48) but for the absolute measurement (P = 0.03). Similar results were achieved when validated against lipid-rich plaque by OCT in a subset of 285 cross sections. CONCLUSIONS In ex vivo conditions, the relative area of coronary atherosclerotic plaque less than 60 HU in CTA as derived from quantitative histogram analysis has good accuracy to detect LCP as compared with a histological analysis independent of differences in luminal contrast enhancement.
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Reproducibility of noncalcified coronary artery plaque burden quantification from coronary CT angiography across different image analysis platforms. AJR Am J Roentgenol 2014; 202:W43-9. [PMID: 24370164 DOI: 10.2214/ajr.13.11225] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE The objective of our study was to evaluate the reproducibility of noncalcified coronary artery plaque burden quantification from coronary CT angiography (CTA) across different commercial analysis platforms. MATERIALS AND METHODS For this study, 47 patients (36 men, 11 women; mean age ± SD, 62 ± 13 years) with noncalcified plaques on coronary CTA were included. Automated quantification of noncalcified coronary artery plaque volume was performed on identical datasets using three commercially available image analysis software platforms (software platforms 1-3). Identical tissue attenuation ranges between 0 and 50 HU for low-attenuation plaques and 50-130 HU for medium-attenuation plaques were consistently applied. Log volume data were compared with the Pearson correlation coefficient and Bland-Altman analysis. RESULTS Differences in plaque volume measurements on intraplatform repeat measurements were statistically insignificant (p = 0.923). At the low-attenuation threshold, software platform 3 had significantly higher log volumes (p < 0.001) than both software platforms 1 and 2 and software platform 1 had significantly higher log volumes than software platform 2 (p < 0.001). The results at the medium-attenuation level were identical except that the log volumes for software platforms 1 and 2 were not significantly different (p > 0.05) in the left anterior descending artery and left circumflex artery. The Pearson correlation coefficient was found to be 0.677 (p < 0.001; 95% CI, 0.608-0.735) between software platforms 1 and 2, 0.672 (p < 0.001; 95% CI, 0.603-0.732) between software platforms 1 and 3, and 0.550 (p < 0.001; 95% CI, 0.463-0.627) between software platforms 2 and 3. CONCLUSION Currently available noncalcified plaque quantification software provides good intraplatform reproducibility but poor interplatform reproducibility. Serial or comparative assessments require evaluation using the same software. Industry standards should be developed to enable reproducible assessments across manufacturers.
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The effect of iterative image reconstruction algorithms on the feasibility of automated plaque assessment in coronary CT angiography. Int J Cardiovasc Imaging 2013; 29:1879-88. [DOI: 10.1007/s10554-013-0281-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 08/21/2013] [Indexed: 01/31/2023]
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Yu BB, Zhai JL, Sun G. Diagnostic accuracy of CT angiography, intravascular US, and optical frequency domain imaging in the differentiation of advanced coronary plaques. Radiology 2013; 268:304. [PMID: 23793594 DOI: 10.1148/radiol.13122765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Schlett CL, Ferencik M, Celeng C, Maurovich-Horvat P, Scheffel H, Stolzmann P, Do S, Kauczor HU, Alkadhi H, Bamberg F, Hoffmann U. How to assess non-calcified plaque in CT angiography: delineation methods affect diagnostic accuracy of low-attenuation plaque by CT for lipid-core plaque in histology. Eur Heart J Cardiovasc Imaging 2013; 14:1099-105. [PMID: 23671211 DOI: 10.1093/ehjci/jet030] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS To compare the accuracy of two plaque delineation methods for coronary computed tomographic angiography (CTA) to identify lipid-core plaque (LCP) using histology as the reference standard. METHODS AND RESULTS Five ex vivo hearts were analysed by CTA and histology. LCP was defined by histology as fibroatheroma with core diameter/circumference >200 μm/>60° and cap thickness <450 μm. In CTA, plaque was manually delineated either as the difference between the inner and outer vessel walls (Method A) or as a direct tracing of plaque (Method B). Low-attenuation plaque was defined as an area with <90 Hounsfield units. Of 446 co-registered cross-sections, 55 (12%) contained LCP. In CTA, low-attenuation plaque area was larger as assessed with Method A compared with Method B (difference: 120 ± 60%). Although low-attenuation plaque was associated with the presence of LCP, the delineation Method B yielded higher diagnostic accuracy than Method A [area under the curve (AUC): 0.831 vs. 0.780, respectively, P = 0.005]. After excluding 'normal' cross-sections by CTA (n = 117), AUC for detecting LCP became similar between both methods (0.767 vs. 0.729, P = 0.07, respectively). CONCLUSION Low-attenuation plaque in CTA is a diagnostic tool for LCP but prone to error if plaque is defined as the area between the inner and outer vessel walls and normal cross-sections are included in the assessment.
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Affiliation(s)
- Christopher L Schlett
- Cardiac MR PET CT Program, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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