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Durur-Subasi I, Durur-Karakaya A. Editorial for "Early Identification of Pathologic Complete Response to Neoadjuvant Chemotherapy Using Multi-phase DCE-MRI by Siamese Network in Breast Cancer: A Longitudinal Multicenter Study". J Magn Reson Imaging 2023. [PMID: 38135653 DOI: 10.1002/jmri.29190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 11/04/2023] [Indexed: 12/24/2023] Open
Affiliation(s)
- Irmak Durur-Subasi
- International Faculty of Medicine, Department of Radiology, Istanbul Medipol University, Istanbul, Turkey
| | - Afak Durur-Karakaya
- Faculty of Medicine, Department of Radiology, Koc University, Istanbul, Turkey
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Subasi M, Durur-Karakaya A, Balta H, Karaman A. Compressive Sonoelastography Findings of Esophageal Carcinoma. Eurasian J Med 2019; 51:267-269. [PMID: 31692690 DOI: 10.5152/eurasianjmed.2019.18406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective The aim of this study was to evaluate the compressive sonoelastography findings of primary esophageal carcinoma. Materials and Methods Esophageal specimens of the patients with a tumor staged earlier than T2, with no lymphadenopathy or distant metastasis, who underwent surgery, were evaluated by compressive sonoelastography under ex vivo conditions immediately following surgical excision. The compressive sonoelastography findings of primary esophageal carcinoma were recorded. Compressive sonoelastography measurements were made according to the esophageal muscle because of lack of fat tissue. Results The mean elasticity score was 3±1 (range, 1-4), and the mean strain ratio was 1±0.9 (range, 0.3-2.9). Conclusion Primary esophageal carcinoma is stiff based on the elasticity score, and it demonstrated a mean strain ratio similar to the esophageal muscle.
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Affiliation(s)
- Mahmut Subasi
- Department of Thoracic Surgery, Erzurum Training and Research Hospital, Erzurum, Turkey; Department of Thoracic Surgery and Lung Transplantation, University of Health Sciences, Ankara City Hospital, Ankara, Turkey
| | - Afak Durur-Karakaya
- Department of Radiology, Erzurum Training and Research Hospital, Erzurum, Turkey; Department of Radiology, Koc University School of Medicine, Istanbul, Turkey
| | - Hilal Balta
- Department of Pathology, Erzurum Training and Research Hospital, Erzurum, Turkey
| | - Adem Karaman
- Department of Radiology, Ataturk University School of Medicine, Erzurum, Turkey
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Durur-Karakaya A, Seker M, Durur-Subasi İ. Diffusion-weighted imaging in ectopic pregnancy: ring of restriction sign. Br J Radiol 2017; 91:20170528. [PMID: 29023142 DOI: 10.1259/bjr.20170528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To demonstrate the diffusion-weighted imaging (DWI) findings of ectopic pregnancy (EP) and introduce the "ring of restriction" sign by discussing possible causes. METHODS Between January 2014 and January 2017, patients with EP and examined by MRI on a 3T scanner were retrospectively evaluated. MRI and DWI findings were recorded. RESULTS A total of 40 patients were diagnosed with EP at our university hospital, 8 of whom (20%) were evaluated by MRI and DWI. All of them were haemodynamically and clinically stable and could be imaged adequately. Locations were ovary (n = 3, 37.5%), tuba (n = 2, 25%), Caesarean section scar (n = 2, 25%) and parauterine (n = 1, 12.5%). In all eight EPs, the gestational sac diameter was compatible with 7-9 weeks. With DWI, the gestational sac was seen as a thick-walled cyst-like structure. The thick wall showed diffusion restrictions in all patients (ring of restriction sign). CONCLUSIONS DWI through its cellular and molecular evidence may contribute diagnosis of EP. Advances in knowledge: Being aware of the EP wall shows diffusion restriction (ring of restriction) avoids interpretation errors especially in appropriate clinical setting with no need for contrast material.
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Affiliation(s)
- Afak Durur-Karakaya
- 1 Department of Radiology, Faculty of Medicine, Istanbul Medipol University , Istanbul, Turkey
| | - Mehmet Seker
- 1 Department of Radiology, Faculty of Medicine, Istanbul Medipol University , Istanbul, Turkey
| | - İrmak Durur-Subasi
- 2 University of Health Sciences, Diskapi Yildirim Beyazit Training and Research Hospital, Clinic of Radiology , Ankara, Turkey xs
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Durur-Subasi I, Durur-Karakaya A, Karaman A, Seker M, Demirci E, Alper F. Is the necrosis/wall ADC ratio useful for the differentiation of benign and malignant breast lesions? Br J Radiol 2017; 90:20160803. [PMID: 28339285 DOI: 10.1259/bjr.20160803] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE To determine whether the necrosis/wall apparent diffusion coefficient (ADC) ratio is useful for the malignant-benign differentiation of necrotic breast lesions. METHODS Breast MRI was performed using a 3-T system. In this retrospective study, calculation of the necrosis/wall ADC ratio was based on ADC values measured from the necrosis and from the wall of malignant and benign breast lesions by diffusion-weighted imaging (DWI). By synchronizing post-contrast T1 weighted images, the separate parts of wall and necrosis were maintained. All the diagnoses were pathologically confirmed. Statistical analyses were conducted using an independent sample t-test and receiver operating characteristic analysis. The intraclass and interclass correlations were evaluated. RESULTS A total of 66 female patients were enrolled, 38 of whom had necrotic breast carcinomas and 28 of whom had breast abscesses. The ADC values were obtained from both the wall and necrosis. The mean necrosis/wall ADC ratio (± standard deviation) was 1.61 ± 0.51 in carcinomas, and it was 0.65 ± 0.33 in abscesses. The area under the curve values for necrosis ADC, wall ADC and the necrosis/wall ADC ratio were 0.680, 0.068 and 0.942, respectively. A wall/necrosis ADC ratio cut-off value of 1.18 demonstrated a sensitivity of 97%, specificity of 93%, a positive-predictive value of 95%, a negative-predictive value of 96% and an accuracy of 95% in determining the malignant nature of necrotic breast lesions. There was a good intra- and interclass reliability for the ADC values of both necrosis and wall. CONCLUSION The necrosis/wall ADC ratio appears to be a reliable and promising tool for discriminating breast carcinomas from abscesses using DWI. Advances in knowledge: ADC values of the necrosis obtained by DWI are valuable for malignant-benign differentiation in necrotic breast lesions. The necrosis/wall ADC ratio appears to be a reliable and promising tool in the breast imaging field.
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Affiliation(s)
- Irmak Durur-Subasi
- 1 Department of Radiology, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Afak Durur-Karakaya
- 2 Department of Radiology, Faculty of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Adem Karaman
- 3 Department of Radiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Mehmet Seker
- 2 Department of Radiology, Faculty of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Elif Demirci
- 4 Department of Pathology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Fatih Alper
- 3 Department of Radiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
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Karaman A, Durur-Subasi I, Alper F, Durur-Karakaya A, Subasi M, Akgun M. Is it better to include necrosis in apparent diffusion coefficient (ADC) measurements? The necrosis/wall ADC ratio to differentiate malignant and benign necrotic lung lesions: Preliminary results. J Magn Reson Imaging 2017; 46:1001-1006. [PMID: 28152254 DOI: 10.1002/jmri.25649] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 01/12/2017] [Accepted: 01/12/2017] [Indexed: 12/14/2022] Open
Abstract
PURPOSE To determine whether the use of necrosis/wall apparent diffusion coefficient (ADC) ratios in the differentiation of necrotic lung lesions is more reliable than measuring the wall alone. MATERIALS AND METHODS In this retrospective study, a total of 76 patients (54 males and 22 females, 71% vs. 29%, with a mean age of 53 ± 18 years, range, 18-84) were enrolled, 33 of whom had lung carcinoma and 43 had a benign necrotic lung lesion. A 3T scanner was used. The calculation of the necrosis/wall ADC ratio was based on ADC values measured from necrosis and the wall of the lesions by diffusion-weighted imaging (DWI). Statistical analyses were performed with the independent samples t-test and receiver operating characteristic analysis. Intraobserver and interobserver reliability were calculated for ADC values of wall and necrosis. RESULTS The mean necrosis/wall ADC ratio was 1.67 ± 0.23 for malignant lesions and 0.75 ± 0.19 for benign lung lesions (P < 0.001). To estimate malignancy the area under the curve (AUC) values for necrosis ADC, wall ADC, and the necrosis/wall ADC ratio were 0.720, 0.073, and 0.997, respectively. A wall/necrosis ADC ratio cutoff value of 1.12 demonstrated a 100% sensitivity and 98% specificity in the estimation of malignancy. Positive predictive value was 100%, and negative predictive value 98% and diagnostic accuracy 99%. There was a good intraobserver and interobserver reliability for wall and necrosis. CONCLUSION The necrosis/wall ADC ratio appears to be a reliable and promising tool for discriminating lung carcinoma from benign necrotic lung lesions than measuring the wall alone. LEVEL OF EVIDENCE 4 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2017;46:1001-1006.
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Affiliation(s)
- Adem Karaman
- Ataturk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Irmak Durur-Subasi
- Diskapi Yildirim Beyazit Training and Research Hospital, Clinic of Radiology, Ankara, Turkey
| | - Fatih Alper
- Ataturk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Afak Durur-Karakaya
- Istanbul Medipol University, Faculty of Medicine, Department of Radiology, Istanbul, Turkey
| | - Mahmut Subasi
- Turkiye Yuksek Ihtısas Training and Research Hospital, Clinic of Thoracic Surgery and Lung Transplantation, Ankara, Turkey
| | - Metin Akgun
- Ataturk University, Faculty of Medicine, Department of Chest Diseases, Erzurum, Turkey
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Karaman A, Diyarbakir B, Durur-Subasi I, Kose D, Özbek-Bilgin A, Topcu A, Gundogdu C, Durur-Karakaya A, Bayraktutan Z, Alper F. A novel approach to contrast-induced nephrotoxicity: the melatonergic agent agomelatine. Br J Radiol 2016; 89:20150716. [PMID: 26886874 DOI: 10.1259/bjr.20150716] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To study the potential nephroprotective role of agomelatine in rat renal tissue in cases of contrast-induced nephrotoxicity (CIN). The drug's action on the antioxidant system and proinflammatory cytokines, superoxide dismutase (SOD) activity, levels of glutathione (GSH) and malondialdehyde (MDA) and the gene expression of interleukin-6 (IL-6), tumour necrosis factor (TNF)-α and nuclear factor kappa B (NF-κB) was measured. Tubular necrosis and hyaline and haemorrhagic casts were also histopathologically evaluated. METHODS The institutional ethics and local animal care committees approved the study. Eight groups of six rats were put on the following drug regimens: Group 1: healthy controls, Group 2: GLY (glycerol), Group 3: CM (contrast media--iohexol 10 ml kg(-1)), Group 4: GLY+CM, Group 5: CM+AGO20 (agomelatine 20 mg kg(-1)), Group 6: GLY+CM+AGO20, Group 7: CM+AGO40 (agomelatine 40 mg kg(-1)) and Group 8: GLY+CM+AGO40. The groups were evaluated by one-way analysis of variance and Duncan's multiple comparison test. RESULTS Agomelatine administration significantly improved the serum levels of blood urea nitrogen (BUN) and creatinine, SOD activity, GSH and MDA. The use of agomelatine had substantial downregulatory consequences on TNF-α, NF-κB and IL-6 messenger RNA levels. Mild-to-severe hyaline and haemorrhagic casts and tubular necrosis were observed in all groups, except in the healthy group. The histopathological scores were better in the agomelatine treatment groups. CONCLUSION Agomelatine has nephroprotective effects against CIN in rats. This effect can be attributed to its properties of reducing oxidative stress and inhibiting the secretion of proinflammatory cytokines (NF-κB, TNF-α and IL-6). ADVANCES IN KNOWLEDGE CIN is one of the most important adverse effects of radiological procedures. Renal failure, diabetes, malignancy, old age and non-steroidal anti-inflammatory drug use pose the risk of CIN in patients. Several clinical studies have investigated ways to avoid CIN. Theophylline/aminophylline, statins, ascorbic acid and iloprost have been suggested for this purpose. Agomelatine is one of the melatonin ligands and is used for affective disorders and has antioxidant features. In this study, we hypothesized that agomelatine could have nephroprotective, antioxidant and anti-inflammatory effects against CIN in rats.
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Affiliation(s)
- Adem Karaman
- 1 Department of Radiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Busra Diyarbakir
- 2 Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Irmak Durur-Subasi
- 3 Department of Radiology, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Duygu Kose
- 2 Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Asli Özbek-Bilgin
- 2 Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Atilla Topcu
- 4 Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdoğan University, Rize, Turkey
| | - Cemal Gundogdu
- 5 Department of Pathology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | | | - Zafer Bayraktutan
- 7 Department of Biochemistry, Erzurum Regional Training and Research Hospital, Erzurum, Turkey
| | - Fatih Alper
- 1 Department of Radiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
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Abstract
This paper provides information about osteochondral lesions (OCL) and example cases of OCL occurring in major joints, some of which are rarely seen. This simple tutorial is presented in question and answer format.
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Affiliation(s)
- Irmak Durur-Subasi
- Department of Radiology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
| | - Afak Durur-Karakaya
- Clinic of Radiology, Regional Research and Training Hospital, Erzurum, Turkey
| | - Omer Selim Yildirim
- Department of Orthopedics and Traumatology, Ataturk University Faculty of Medicine, Erzurum, Turkey
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Durur-Subasi I, Durur-Karakaya A, Karaman A, Demirci E, Alper F, Yılmazel-Ucar E, Acemoglu H, Akcay MN. Value of MRI sequences for prediction of invasive breast carcinoma size. J Med Imaging Radiat Oncol 2014; 58:565-8. [DOI: 10.1111/1754-9485.12205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/06/2014] [Indexed: 12/30/2022]
Affiliation(s)
- Irmak Durur-Subasi
- Department of Radiology; Ataturk University, School of Medicine; Erzurum Turkey
| | - Afak Durur-Karakaya
- Department of Radiology; Erzurum Regional Research and Training Hospital; Erzurum Turkey
| | - Adem Karaman
- Department of Radiology; Ataturk University, School of Medicine; Erzurum Turkey
| | - Elif Demirci
- Department of Pathology; Ataturk University, School of Medicine; Erzurum Turkey
| | - Fatih Alper
- Department of Radiology; Ataturk University, School of Medicine; Erzurum Turkey
| | - Elif Yılmazel-Ucar
- Department of Chest Diseases; Ataturk University, School of Medicine; Erzurum Turkey
| | - Hamit Acemoglu
- Department of Medical Education; Ataturk University, School of Medicine; Erzurum Turkey
| | - Mufide Nuran Akcay
- Department of General Surgery; Ataturk University, School of Medicine; Erzurum Turkey
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Durur-Karakaya A, Kantarci M, Yalcin A, Demir B, Yuce İ. A Rare Variation of Hepatic Arteries (Michels Type IV): MDCT Angiographic Findings. Eurasian J Med 2009; 41:63-65. [PMID: 25610067 PMCID: PMC4261652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
Recently, evaluation of hepatic artery variations has become increasingly important as liver transplantation from live donors gains in popular. Many diagnostic tools can be used to evaluate hepatic artery anatomy. Multi-detector computed tomography angiography (MDCTA) is one these methods. In this case report, we represent MDCTA findings of Michel type IV variation, which is a very rare condition of hepatic arteries.
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Affiliation(s)
- Afak Durur-Karakaya
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Mecit Kantarci
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Ahmet Yalcin
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Berrin Demir
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - İhsan Yuce
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
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Yilmaz-Cankaya B, Kantarci M, Durur-Karakaya A, Yalcin A. Giant hepatic hemangioma. Eurasian J Med 2009; 41:74. [PMID: 25610071 PMCID: PMC4261654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Affiliation(s)
| | - Mecit Kantarci
- Department of Radiology, Medical Faculty, Atatürk University, Erzurum, Turkey
| | - Afak Durur-Karakaya
- Department of Radiology, Medical Faculty, Atatürk University, Erzurum, Turkey
| | - Ahmet Yalcin
- Department of Radiology, Medical Faculty, Atatürk University, Erzurum, Turkey
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Yilmaz-Cankaya B, Kantarci M, Yalcin A, Durur-Karakaya A, Yuce I. Absence of the Left Main Coronary Artery: MDCT Coronary Angiographic Imaging. Eurasian J Med 2009; 41:56-58. [PMID: 25610065 PMCID: PMC4261659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
Absent left main coronary artery (LMCA) is a rare congenital cardiac malformation. We present a case report of a 65-year-old woman with anomalous origin of the left anterior descending (LAD) and circumflex (LCx) artery separated from the left sinus of Valsalva that was diagnosed by multi-detector row computed tomography (MDCT) coronary angiography. Our case indicates that MDCT plays an important role in the diagnosis of some rare coronary anomalies.
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Affiliation(s)
- Bahar Yilmaz-Cankaya
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Mecit Kantarci
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Ahmet Yalcin
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Afak Durur-Karakaya
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Ihsan Yuce
- Atatürk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
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Durur-Subasi I, Kantarci M, Durur-Karakaya A, Okur A. Comparison of 16-slice computed tomography with conventional angiography to evaluate coronary artery stent patency. Eurasian J Med 2009; 41:4-9. [PMID: 25610056 PMCID: PMC4261646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
OBJECTIVE In this study, we evaluated the utility of 16-slice MDCT (multidetector computed tomography) to assess stent patency after coronary artery stenting. MATERIALS AND METHODS Retrospective ECG-gated CT-angiography using 16-slice MDCT was performed in 52 consecutive patients with coronary artery stents. Qualitative assessment of 61 coronary stent lumens by MDCT is reported, and the reasons preventing assessment were investigated. RESULTS All non-assessable stents were non-assessable due to partial volume effects and metal artifacts. To evaluate instent restenosis, conventional coronary angiography was performed on the 54 assessable stents in 48 patients, and the results were compared with the MDCT results. Based on the results of the conventional coronary angiography, MDCT correctly detected four in-stent restenosis. CONCLUSION Despite some limitations, 16-slice MDCT provides sufficient evaluations of some coronary stents, and can detect in-stent restenosis with high accuracy.
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Affiliation(s)
| | - Mecit Kantarci
- Ataturk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Afak Durur-Karakaya
- Ataturk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
| | - Adnan Okur
- Ataturk University, Faculty of Medicine, Department of Radiology, Erzurum, Turkey
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