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Wang Y, Sun Y, Song J, Zhang X, Li L, Shen Z, Tian J, Ao Y. Iliopsoas fibrosis after revision of total hip arthroplasty revealed by 68Ga-FAPI PET/CT: a case report. Front Med (Lausanne) 2024; 11:1328630. [PMID: 38439900 PMCID: PMC10909810 DOI: 10.3389/fmed.2024.1328630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/22/2024] [Indexed: 03/06/2024] Open
Abstract
Background Total hip arthroplasty (THA) is a well-established surgical procedure that has been extensively validated to alleviate pain, enhance joint function, improve the ability to perform daily activities, and enhance overall quality of life. However, this procedure is associated with certain complications, among which skeletal muscle fibrosis is a frequently overlooked but significant complication that can lead to persistent pain. Currently, there is no effective method for diagnosing skeletal muscle fibrosis following total hip arthroplasty. Case report We report a 75-year-old male patient who complained of left groin pain after revision total hip arthroplasty. Serological examinations, X-rays, and bone scan results were all normal. However, during the 68Ga-FAPI PET/CT examination, we observed significant radiotracer uptake along the iliopsoas muscle. This abnormal uptake pattern suggested potential biological activity in this specific area. Combined with physical examination, the patient was diagnosed with iliopsoas fibrosis. Conclusions The presented images indicated that the uptake pattern was an important indicator for diagnosis, and the prospect of fibroblast activation protein in the diagnosis of skeletal muscle fibrosis has shown certain application value.
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Affiliation(s)
- Yiqun Wang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Yabing Sun
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Junlei Song
- Department of Orthopedics, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Xiaojun Zhang
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - La Li
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Zhihui Shen
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Jiahe Tian
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Yingfang Ao
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
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Wang Y, Yuan L, Du Y, Liu H, Li Q, Chang Y, Shi Y, Wang Y, Meng X, Zhou Y, Yao S, Tian J. Performance characteristics of 18F-fluorodeoxyglucose in non-infected hip replacement. Front Med (Lausanne) 2023; 9:1043812. [PMID: 36698792 PMCID: PMC9870722 DOI: 10.3389/fmed.2022.1043812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 12/13/2022] [Indexed: 01/07/2023] Open
Abstract
Purpose The aim of this study was to retrospectively analyze 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/ computed tomography (CT) images of non-infected hip arthroplasty patients and summarize findings that may be useful for clinical practice. Methods 18F-FDG PET/CT images of non-infected hip arthroplasty patients were collected from September 2009 to August 2021. The region of interest was independently delineated by two physicians and maximum standardized uptake values (SUVmax) were recorded and compared. Serologic data were also collected and the correlation between SUVmax and serologic parameters was analyzed, while the images were classified based on the 18F-FDG uptake pattern in the images using the diagnostic criteria proposed by Reinartz et al. (9). The interval between hip replacement and PET/CT was classified by year and the characteristics of the two groups were compared. The images of patients who underwent PET/CT multiple times were analyzed dynamically. Results A total of 121 examinations were included; six patients underwent PET/CT twice and two patients had three scans. There were no significant correlations between SUVmax and serologic results. The interobserver agreement between the two physicians in the classification according to the criteria of Reinartz et al. (9) was 0.957 (P < 0.005). Although there was non-specific uptake in cases with an arthroplasty-to-PET/CT interval this was non-significant. Additionally, 18F-FDG showed potential utility for dynamic observation of the condition of the hip. Conclusion SUVmax provided information independent of serologic results, meanwhile 18F-FDG showed potential applicability to the dynamic monitoring of hip arthroplasty-related diseases. However, the presence of blood vessels and muscles affected image interpretation and the specificity of 18F-FDG was not optimal. A more specific radionuclide is needed to maximize the benefits of using PET/CT for the assessment of periprosthetic joint infection (PJI).
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Affiliation(s)
- Yiqun Wang
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China,Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
| | - Lulu Yuan
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Yinqiao Du
- Department of Orthopedics Surgery, The First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China,Department of Orthopedics Surgery, The Fourth Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Honghong Liu
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Qingxiao Li
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Yan Chang
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China,Yan Chang,
| | - Yuanyuan Shi
- Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
| | - Yanmei Wang
- General Electric (GE) Healthcare China, Shanghai, China
| | - Xiaolin Meng
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Yonggang Zhou
- Department of Orthopedics Surgery, The First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China,Department of Orthopedics Surgery, The Fourth Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China,*Correspondence: Yonggang Zhou,
| | - Shulin Yao
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China,Shulin Yao,
| | - Jiahe Tian
- Department of Nuclear Medicine, The First Medical Centre, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China,Jiahe Tian,
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Kouijzer IJE, Speijker LTD, Aarntzen EHJG, Rijnen WHC, Somford MP, Maat I, van Meer MPA, Oever JT, Gisolf EH. Clinically unsuspected orthopedic implants during S. aureus bacteremia do not require additional diagnostic work-up. Infection 2022; 51:743-747. [PMID: 36076049 DOI: 10.1007/s15010-022-01913-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/24/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE To assess the likelihood of occult infection in patients with clinically unsuspected orthopedic implants during Staphylococcus aureus bacteremia (SAB). METHODS In a retrospective study in two Dutch hospitals, we included all patients with SAB between 2013 and 2020 with one or more orthopedic implants in whom [18F]FDG-PET/CT was performed. The primary outcome was the percentage of patients who had an orthopedic implant-related infection by S. aureus. We also compared clinical parameters in patients with clinically suspected and unsuspected implants. RESULTS Fifty-five of 191 (29%) orthopedic implants in 118 SAB patients included had clinical signs of infection. Of all 136 unsuspected implants, 5 (3%, all arthroplasties), showed increased [18F]FDG uptake around the prosthesis on [18F]FDG-PET/CT. The clinical course of these patients without clinically overt infection or relapse of bacteremia during follow-up of a median of 48 months (range 0-48), however, argued against prosthetic joint infection. CONCLUSION Although orthopedic implants are evidently a risk factor for metastatic infection during SAB, the absence of clinical symptoms obviate the need of additional investigations or prolonged antibiotic treatment.
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Affiliation(s)
- Ilse J E Kouijzer
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, the Netherlands.
| | - L T D Speijker
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, the Netherlands
| | - E H J G Aarntzen
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, the Netherlands
| | - W H C Rijnen
- Department of Orthopaedics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - M P Somford
- Department of Orthopaedics, Rijnstate Hospital, Arnhem, the Netherlands
| | - I Maat
- Department of Medical Microbiology and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - M P A van Meer
- Department of Medical Microbiology and Immunology, Rijnstate Hospital, Arnhem, the Netherlands
| | - J Ten Oever
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, the Netherlands
| | - E H Gisolf
- Department of Internal Medicine, Rijnstate Hospital, Arnhem, the Netherlands
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4
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Wang Y, Liu H, Yao S, Guan Z, Li Q, Qi E, Li X, Zhang J, Tian J. Using 18F-flurodeoxyglucose and 68Ga-fibroblast activation protein inhibitor PET/CT to evaluate a new periprosthetic joint infection model of rabbit due to Staphylococcus aureus. Nucl Med Commun 2022; 43:232-241. [PMID: 35022379 DOI: 10.1097/mnm.0000000000001495] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE The existing periprosthetic joint infection (PJI) models have obvious limitations, and studies of PJI on animal models using PET/computed tomography (CT) for diagnosis are still lacking. Thus, the aim of this study was to establish a new PJI model and 18F-fluorodeoxyglucose (FDG) and 68Ga-fibroblast activation protein inhibitor (FAPI) were employed to study their performance. METHODS A novel PJI model of rabbit was developed by placing two screws in the tibia and femur. Based on bacteria concentration, the animals were divided into five groups, control, 104, 105, 106 and 107. 18F-FDG and 68Ga-FAPI PET/CT were performed continuously in next 2 weeks and maximum standardized uptake value (SUVmax), mean standardized uptake value (SUVmean), metabolic target volume (MTV) and total lesion glycolysis/total lesion fibrosis were calculated as the metrics. RESULTS As for SUVmax, all data of 18F-FDG were larger than that of 68Ga-FAPI in the same group for both weeks. For the performance of 18F-FDG, no definitive conclusion could be drawn for SUVmax and SUVmean. As for 68Ga-FAPI, the 104 group was significantly larger than 105, 106 and 107 groups for SUVmax and SUVmean in both weeks (P < 0.05). MTV of 68Ga-FAPI was found to be almost always larger than that of 18F-FDG in the same group. CONCLUSION The mechanism of 68Ga-FAPI is totally different from 18F-FDG and this unique property of 68Ga-FAPI shows a promising prospect in detecting infection boundary and may even distinguish a small number or a large number of bacterial infections.
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Affiliation(s)
- Yiqun Wang
- Medical School of Chinese PLA, Chinese PLA General Hospital
| | | | | | | | - Qingxiao Li
- Medical School of Chinese PLA, Chinese PLA General Hospital
| | | | - Xiang Li
- Orthopaedics, Chinese PLA General Hospital, Beijing, China
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Ottink KD, Gelderman SJ, Wouthuyzen-Bakker M, Ploegmakers JJW, Glaudemans AWJM, Jutte PC. Nuclear imaging does not have clear added value in patients with low a priori chance of periprosthetic joint infection. A retrospective single-center experience. J Bone Jt Infect 2022; 7:1-9. [PMID: 35047347 PMCID: PMC8759077 DOI: 10.5194/jbji-7-1-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 12/05/2021] [Indexed: 11/21/2022] Open
Abstract
Background: A low-grade periprosthetic joint infection (PJI) may present without
specific symptoms, and its diagnosis remains a challenge. Three-phase bone scintigraphy (TPBS) and white blood cell (WBC) scintigraphy are
incorporated into recently introduced diagnostic criteria for PJI, but their exact value in diagnosing low-grade PJI in patients with nonspecific
symptoms remains unclear.
Methods:
In this retrospective study, we evaluated patients with a prosthetic joint
of the hip or knee who underwent TPBS and/or WBC scintigraphy between 2009 and 2016 because of nonspecific symptoms. We reviewed and calculated
diagnostic accuracy of the TPBS and/or WBC scintigraphy to diagnose or
exclude PJI. PJI was defined based on multiple cultures obtained during
revision surgery. In patients who did not undergo revision surgery, PJI was
ruled out by clinical follow-up of at least 2 years absent of clinical signs of infection based on MSIS 2011 criteria.
Results:
A total of 373 patients were evaluated, including 340 TPBSs and 142 WBC scintigraphies. Thirteen patients (3.5 %) were diagnosed with a PJI. TPBS sensitivity, specificity, and positive and negative predictive values (PPV, NPV) were 71 %, 65 %, 8 % and 98 %, respectively. Thirty-five percent of TPBS showed
increased uptake. Stratification for time intervals between the index
arthroplasty and the onset of symptoms did not alter its diagnostic
accuracy. WBC scintigraphy sensitivity, specificity, PPV and NPV were 30 %, 90 %, 25 % and 94 %, respectively.
Conclusion:
Nuclear imaging does not have clear added value in patients with low a
priori chance of periprosthetic joint infection.
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Affiliation(s)
- Karsten D Ottink
- Department of Orthopaedics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Stefan J Gelderman
- Department of Orthopaedics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands.,Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Marjan Wouthuyzen-Bakker
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Joris J W Ploegmakers
- Department of Orthopaedics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Andor W J M Glaudemans
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - Paul C Jutte
- Department of Orthopaedics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
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6
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Kimura M, Kaku N, Kubota Y, Tagomori H, Tsumura H. Fluorodeoxyglucose Positron-Emission Tomography/Computed Tomography and Magnetic Resonance Imaging for Adverse Local Tissue Reactions near Metal Implants after Total Hip Arthroplasty: A Preliminary Report. Clin Orthop Surg 2021; 13:320-328. [PMID: 34484624 PMCID: PMC8380523 DOI: 10.4055/cios20228] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 12/24/2020] [Accepted: 12/28/2020] [Indexed: 11/06/2022] Open
Abstract
Background Plain computed tomography (CT) and magnetic resonance imaging (MRI) are useful for diagnosing adverse local tissue reactions after metal-on-metal total hip arthroplasty (THA), but metal artifacts can hamper radiological assessments near the implants. We sought to clarify the usefulness of 18F-fluorodeoxyglucose positron-emission tomography (18F-FDG-PET) CT and MRI in the periprosthetic region, which is difficult to assess after THA due to metal artifacts. Methods We performed preoperative 18F-FDG-PET/CT and 18F-FDG-PET/MRI, as well as plain CT and MRI, in 11 metal-on-metal THA patients who underwent revision surgery. Results Most patients showed high FDG uptake in the metal artifact areas and pseudotumors in the 18-F-FDG-PET/CT and 18-F-FDG-PET/MRI scans. Intraoperative intra-articular macroscopic and histopathological intra-articular granulation tissue findings were suggestive of adverse local tissue reaction. Conclusions The enhanced uptake in the metal artifact areas seemed to reflect adverse local tissue reaction. Therefore, 18F-FDG-PET/CT and 18-F-FDG-PET/MRI can be useful for the auxiliary diagnosis of adverse local tissue reactions after metal-on-metal THA.
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Affiliation(s)
- Makoto Kimura
- Department of Orthopedic Surgery, Faculty of Medicine, Oita University, Yufu, Japan
| | - Nobuhiro Kaku
- Department of Orthopedic Surgery, Faculty of Medicine, Oita University, Yufu, Japan
| | - Yuta Kubota
- Department of Orthopedic Surgery, Faculty of Medicine, Oita University, Yufu, Japan
| | - Hiroaki Tagomori
- Department of Orthopedic Surgery, Faculty of Medicine, Oita University, Yufu, Japan
| | - Hiroshi Tsumura
- Department of Orthopedic Surgery, Faculty of Medicine, Oita University, Yufu, Japan
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7
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Abstract
» A 3-phase bone scan is a potential first-line nuclear medicine study for pain after total joint arthroplasty (TJA) when there is concern for periprosthetic joint infection or aseptic loosening. » In patients who have a positive bone scintigraphy result and suspected infection of the joint, but where aspiration or other studies are inconclusive, labeled leukocyte scintigraphy with bone marrow imaging may be of benefit. » Magnetic resonance imaging (MRI), while not a nuclear medicine study, also shows promise and has the advantage of providing information about the soft tissues around a total joint replacement. » Radiotracer uptake patterns in scintigraphy are affected by the prosthesis (total knee arthroplasty [TKA] versus total hip arthroplasty [THA]) and the use of cement. » Nuclear medicine scans may be ordered 1 year postoperatively but may have positive findings that are due to normal physiologic bone remodeling. Nuclear studies may be falsely positive for up to 2 years after TJA. » Single-photon emission computed tomography (SPECT) combined with computed tomography (CT) (SPECT/CT), fluorine-18 fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/CT, and MRI show promise; however, more studies are needed to better define their role in the diagnostic workup of pain after TJA.
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Affiliation(s)
- John M Pinski
- Department of Orthopedic Surgery, Tufts Medical Center, Boston, Massachusetts
| | - Antonia F Chen
- Department of Orthopedic Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Daniel M Estok
- Department of Orthopedic Surgery, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Joseph J Kavolus
- Department of Orthopedic Surgery, Tufts Medical Center, Boston, Massachusetts
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8
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Pijl JP, Kwee TC, Slart RHJA, Glaudemans AWJM. PET/CT Imaging for Personalized Management of Infectious Diseases. J Pers Med 2021; 11:jpm11020133. [PMID: 33669375 PMCID: PMC7920259 DOI: 10.3390/jpm11020133] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 12/28/2022] Open
Abstract
Positron emission tomography combined with computed tomography (PET/CT) is a nuclear imaging technique which is increasingly being used in infectious diseases. Because infection foci often consume more glucose than surrounding tissue, most infections can be diagnosed with PET/CT using 2-deoxy-2-[18F]fluoro-D-glucose (FDG), an analogue of glucose labeled with Fluorine-18. In this review, we discuss common infectious diseases in which FDG-PET/CT is currently applied including bloodstream infection of unknown origin, infective endocarditis, vascular graft infection, spondylodiscitis, and cyst infections. Next, we highlight the latest developments within the field of PET/CT, including total body PET/CT, use of novel PET radiotracers, and potential future applications of PET/CT that will likely lead to increased capabilities for patient-tailored treatment of infectious diseases.
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Affiliation(s)
- Jordy P. Pijl
- Departments of Radiology, Nuclear Medicine and Molecular Imaging, University of Groningen, 9700 RB Groningen, The Netherlands; (T.C.K.); (R.H.J.A.S.); (A.W.J.M.G.)
- Correspondence: ; Tel.: +31-50-361-6161
| | - Thomas C. Kwee
- Departments of Radiology, Nuclear Medicine and Molecular Imaging, University of Groningen, 9700 RB Groningen, The Netherlands; (T.C.K.); (R.H.J.A.S.); (A.W.J.M.G.)
| | - Riemer H. J. A. Slart
- Departments of Radiology, Nuclear Medicine and Molecular Imaging, University of Groningen, 9700 RB Groningen, The Netherlands; (T.C.K.); (R.H.J.A.S.); (A.W.J.M.G.)
- Department of Biomedical Photonic Imaging, Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Andor W. J. M. Glaudemans
- Departments of Radiology, Nuclear Medicine and Molecular Imaging, University of Groningen, 9700 RB Groningen, The Netherlands; (T.C.K.); (R.H.J.A.S.); (A.W.J.M.G.)
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Katal S, Gholamrezanezhad A, Nikpanah M, Christensen TQ, Werner TJ, Saboury B, Alavi A, Hess S. Potential Applications of PET/CT/MR Imaging in Inflammatory Diseases: Part I: Musculoskeletal and Gastrointestinal Systems. PET Clin 2020; 15:547-558. [PMID: 32768367 DOI: 10.1016/j.cpet.2020.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
During the past decades, the role of fludeoxyglucose (FDG)-PET and hybrid PET/computed tomography (CT) has been established clinically in the diagnostic workup of a multitude of infectious and inflammatory disorders. In recent years, the fusion of MR imaging to PET has also been increasingly explored, and this may be especially useful in musculoskeletal and gastrointestinal inflammatory diseases due to exceptional soft tissue contrast and reduced radiation dose. This article outlines the current potential for hybrid molecular imaging in the musculoskeletal system and the gastrointestinal tract with special focus on the potential for fused PET/CT/MR imaging.
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Affiliation(s)
- Sanaz Katal
- Department of Nuclear Medicine/PET-CT, Kowsar Hospital, Shiraz, Iran
| | - Ali Gholamrezanezhad
- Department of Radiology, Keck School of Medicine, University of Southern California (USC), Health Sciences Campus, 1500 San Pablo Street, Los Angeles, California 90033, USA.
| | - Moozhan Nikpanah
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Thomas Q Christensen
- Department of Clinical Engineering, Region of Southern Denmark, Esbjerg, Denmark 5000
| | - Thomas J Werner
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
| | - Babak Saboury
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA; Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
| | - Abass Alavi
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
| | - Søren Hess
- Department of Radiology and Nuclear Medicine, Hospital of South West Jutland, University Hospital of Southern Denmark, Esbjerg, Denmark 6700
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10
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Abstract
Periprosthetic joint infection (PJI) is a severe complication, associated with substantial morbidity and high costs. PJI can occur in the early postoperative period but also many years after joint replacement. Timely and accurate diagnosis is important for treatment planning. Diagnosis of PJI can be a challenge, especially for chronic and low-grade infections. The diagnostic performance of fludeoxyglucose F 18 (18F-FDG) positron emission tomography (PET) in detecting PJI seems sufficiently high for routine clinical application and has additional value to conventional tests. Further research is needed to determine the exact place of 18F-FDG PET in the diagnostic work-up of suspected PJI.
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Affiliation(s)
- Robert M Kwee
- Department of Radiology, Zuyderland Medical Center, Heerlen/Sittard/Geleen, The Netherlands
| | - Thomas C Kwee
- Department of Radiology, Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Hanzeplein 1, PO Box 30.001, Groningen 9700 RB, the Netherlands.
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11
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18F FDG-PET/CT has poor diagnostic accuracy in diagnosing shoulder PJI. Eur J Nucl Med Mol Imaging 2019; 46:2013-2022. [PMID: 31292698 DOI: 10.1007/s00259-019-04381-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/28/2019] [Indexed: 01/11/2023]
Abstract
PURPOSE Chronic low-grade periprosthetic joint infection (PJI) of a shoulder replacement can be challenging to diagnose. 18F-FDG PET/CT is suggested as a modality to diagnose lower-limb PJI, but no studies on shoulder replacements exist. The aim of this study was therefore to determine the diagnostic accuracy of 18F-FDG PET/CT in diagnosing chronic PJI of the shoulder. METHODS Patients evaluated for a failed shoulder replacement during a 3-year period were prospectively included in the study. All patients underwent pre-operative 18F-FDG PET/CT, and were evaluated for signs of infection by three independent reviewers using shoulder-specific criteria. Interrater-agreement was calculated between the reviewers. If the patient had revision surgery, biopsy specimens were obtained and cultured with bacterial growth in the cultures serving as gold standard of infection. RESULTS A total of 86 patients were included in the study. Nine patients were 18F-FDG PET/CT positive for infection, with only three true positive. Using the gold standard, infection was diagnosed after revision surgery in 22 cases. All infections were chronic and caused by low-virulent microbes. The sensitivity of 18F-FDG PET/CT was 0.14 95% CI (0.03-0.36), specificity 0.91 95% CI (0.81-0.97), positive predictive value was 0.40 95% CI (0.15-0.71) and negative predictive value 0.71 95% CI (0.67-0.75). The inter-observer agreement was 0.56 (Fleiss' kappa), indicating moderate agreement of the visual FDG-PET evaluation using the shoulder-specific criteria. CONCLUSION 18F-FDG PET/CT has poor diagnostic accuracy in diagnosing low-grade PJI of the shoulder. 18F-FDG PET/CT cannot be recommended as a part of the routine preoperative workup to diagnose low-grade infection of a shoulder replacement.
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