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Griffin MT, Werner TJ, Alavi A, Revheim ME. The value of FDG-PET/CT imaging in the assessment, monitoring, and management of COVID-19. EUROPEAN PHYSICAL JOURNAL PLUS 2023; 138:283. [PMID: 37008755 PMCID: PMC10040919 DOI: 10.1140/epjp/s13360-023-03797-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 02/11/2023] [Indexed: 06/19/2023]
Abstract
The pathogenesis of Coronavirus Disease 2019 (COVID-19) involves cytokine-driven recruitment and accumulation of inflammatory cells at sites of infection. These activated neutrophils, monocytes, and effector T cells are highly glycolytic and thus appear as [18]F-labeled fluorodeoxyglucose (FDG) avid sites on positron emission tomography (PET) imaging. FDG-PET-computed tomography (FDG-PET/CT) is a highly sensitive modality for the detection, monitoring, and assessing response related to COVID-19 disease activity that holds significant clinical relevance. To date, concerns over cost, access, and undue radiation exposure have limited the use of FDG-PET/CT in COVID-19 to a small number of individuals where PET-based interventions were already indicated. In this review, we summarize the existing literature on the use of FDG-PET in the detection and monitoring of COVID-19 with particular focus on several areas of clinical relevance that warrant future research: (1) incidental early detection of subclinical COVID-19 in patients who have undergone FDG-PET for other underlying diseases, (2) standardized quantitative assessment of COVID-19 disease burden at specific points in time, and (3) analysis of FDG-PET/CT data leading to better characterization of COVID-19 pathogenesis. Employing FDG-PET/CT for these purposes may allow for the earliest detection of COVID-19-associated venous thromboembolism (VTE), standardized monitoring of disease progression and response to treatment, and better characterization of the acute and chronic complications of this disease.
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Affiliation(s)
- Matthew T. Griffin
- Drexel University College of Medicine, Philadelphia, PA USA
- Department of Radiology, University of Pennsylvania, Philadelphia, PA USA
| | - Thomas J. Werner
- Department of Radiology, University of Pennsylvania, Philadelphia, PA USA
| | - Abass Alavi
- Department of Radiology, University of Pennsylvania, Philadelphia, PA USA
| | - Mona-Elisabeth Revheim
- Division of Radiology and Nuclear Medicine, Oslo University Hospital, Postbox 4950, 0424 Nydalen, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Postbox 1078, 0316 Blindern, Oslo, Norway
- The Intervention Center, Division of Technology and Innovation, Oslo University Hospital, Postbox 4950, 0424 Oslo, Norway
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Alavi A, Saboury B, Nardo L, Zhang V, Wang M, Li H, Raynor WY, Werner TJ, Høilund-Carlsen PF, Revheim ME. Potential and Most Relevant Applications of Total Body PET/CT Imaging. Clin Nucl Med 2022; 47:43-55. [PMID: 34874348 DOI: 10.1097/rlu.0000000000003962] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
ABSTRACT The introduction of total body (TB) PET/CT instruments over the past 2 years has initiated a new and exciting era in medical imaging. These instruments have substantially higher sensitivity (up to 68 times) than conventional modalities and therefore allow imaging the entire body over a short period. However, we need to further refine the imaging protocols of this instrument for different indications. Total body PET will allow accurate assessment of the extent of disease, particularly, including the entire axial and appendicular skeleton. Furthermore, delayed imaging with this instrument may enhance the sensitivity of PET for some types of cancer. Also, this modality may improve the detection of venous thrombosis, a common complication of cancer and chemotherapy, in the extremities and help prevent pulmonary embolism. Total body PET allows assessment of atherosclerotic plaques throughout the body as a systematic disease. Similarly, patients with widespread musculoskeletal disorders including both oncologic and nononcologic entities, such as degenerative joint disease, rheumatoid arthritis, and osteoporosis, may benefit from the use of TB-PET. Finally, quantitative global disease assessment provided by this approach will be superior to conventional measurements, which do not reflect overall disease activity. In conclusion, TB-PET imaging may have a revolutionary impact on day-to-day practice of medicine and may become the leading imaging modality in the future.
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Affiliation(s)
- Abass Alavi
- From the Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA
| | | | - Lorenzo Nardo
- Department of Radiology, University of California, Davis, Sacramento, CA
| | - Vincent Zhang
- From the Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA
| | - Meiyun Wang
- Department of Radiology, Henan Provincial People's Hospital, Henan, China
| | - Hongdi Li
- United Imaging Healthcare, Houston, TX
| | - William Y Raynor
- From the Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA
| | - Thomas J Werner
- From the Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA
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Eibschutz LS, Rabiee B, Asadollahi S, Gupta A, Assadi M, Alavi A, Gholamrezanezhad A. FDG-PET/CT of COVID-19 and Other Lung Infections. Semin Nucl Med 2022; 52:61-70. [PMID: 34246449 PMCID: PMC8216878 DOI: 10.1053/j.semnuclmed.2021.06.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
While not conventionally used as the first-line modality, [18F]-2-fluoro-2-deoxy-D-glucose (FDG) - positron emission tomography/computed tomography (PET/CT) can identify infection and inflammation both earlier and with higher sensitivity than anatomic imaging modalities [including chest X-ray (CXR), computed tomography (CT), and magnetic resonance imaging (MRI)]. The extent of inflammation and, conversely, recovery within the lungs, can be roughly quantified on FDG-PET/CT using maximum standardized uptake value (SUVmax) values. The Coronavirus disease 2019 (COVID-19) pandemic has highlighted the value of FDG-PET/CT in diagnosis, elucidation of acute pulmonary and extrapulmonary manifestations, and long-term follow up. Similarly, many other pulmonary infections such as previously documented coronaviruses, aspergillosis, blastomycosis, candidiasis, coccidioidomycosis, cryptococcosis, histoplasmosis, mucormycosis, and typical/atypical mycobacterial infections have all been identified and characterized using FDG-PET/CT imaging. The goal of this review is to summarize the actual and potential benefits of FDG-PET/CT in the imaging of COVID-19 and other lung infections. Further research is necessary to determine the best indications and clinical applications of FDG-PET/CT, improve its specificity, and ultimately ascertain how this modality can best be utilized in the diagnostic work up of infectious pathologies.
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Affiliation(s)
- Liesl S. Eibschutz
- Department of Radiology, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA
| | - Behnam Rabiee
- Department of Radiology, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA,Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY
| | - Shadi Asadollahi
- Professor of Radiology, Director of Research Education, Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA
| | - Amit Gupta
- Department of Radiology, University Hospital Cleveland Medical Center, Cleveland, OH
| | - Majid Assadi
- Department of Nuclear Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Abass Alavi
- Professor of Radiology, Director of Research Education, Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA
| | - Ali Gholamrezanezhad
- Department of Radiology, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA,Address reprint requests to Ali Gholamrezanezhad, MD, Department of Radiology, Division of Emergency Radiology, Keck School of Medicine, University of Southern California, 1500 San Pablo Street, Los Angeles, CA 90033
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Raynor WY, Park PSU, Borja AJ, Sun Y, Werner TJ, Ng SJ, Lau HC, Høilund-Carlsen PF, Alavi A, Revheim ME. PET-Based Imaging with 18F-FDG and 18F-NaF to Assess Inflammation and Microcalcification in Atherosclerosis and Other Vascular and Thrombotic Disorders. Diagnostics (Basel) 2021; 11:diagnostics11122234. [PMID: 34943473 PMCID: PMC8700072 DOI: 10.3390/diagnostics11122234] [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] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 01/13/2023] Open
Abstract
Positron emission tomography (PET) imaging with 18F-fluorodeoxyglucose (FDG) represents a method of detecting and characterizing arterial wall inflammation, with potential applications in the early assessment of vascular disorders such as atherosclerosis. By portraying early-stage molecular changes, FDG-PET findings have previously been shown to correlate with atherosclerosis progression. In addition, recent studies have suggested that microcalcification revealed by 18F-sodium fluoride (NaF) may be more sensitive at detecting atherogenic changes compared to FDG-PET. In this review, we summarize the roles of FDG and NaF in the assessment of atherosclerosis and discuss the role of global assessment in quantification of the vascular disease burden. Furthermore, we will review the emerging applications of FDG-PET in various vascular disorders, including pulmonary embolism, as well as inflammatory and infectious vascular diseases.
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Affiliation(s)
- William Y. Raynor
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA; (W.Y.R.); (P.S.U.P.); (A.J.B.); (T.J.W.); (A.A.)
| | - Peter Sang Uk Park
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA; (W.Y.R.); (P.S.U.P.); (A.J.B.); (T.J.W.); (A.A.)
- Perelman School of Medicine at the University of Pennsylvania, 3400 Civic Center Boulevard, Philadelphia, PA 19104, USA;
| | - Austin J. Borja
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA; (W.Y.R.); (P.S.U.P.); (A.J.B.); (T.J.W.); (A.A.)
- Perelman School of Medicine at the University of Pennsylvania, 3400 Civic Center Boulevard, Philadelphia, PA 19104, USA;
| | - Yusha Sun
- Perelman School of Medicine at the University of Pennsylvania, 3400 Civic Center Boulevard, Philadelphia, PA 19104, USA;
| | - Thomas J. Werner
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA; (W.Y.R.); (P.S.U.P.); (A.J.B.); (T.J.W.); (A.A.)
| | - Sze Jia Ng
- Department of Medicine, Crozer-Chester Medical Center, Upland, PA 19013, USA; (S.J.N.); (H.C.L.)
| | - Hui Chong Lau
- Department of Medicine, Crozer-Chester Medical Center, Upland, PA 19013, USA; (S.J.N.); (H.C.L.)
| | - Poul Flemming Høilund-Carlsen
- Department of Nuclear Medicine, Odense University Hospital, 5000 Odense C, Denmark;
- Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark
| | - Abass Alavi
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA; (W.Y.R.); (P.S.U.P.); (A.J.B.); (T.J.W.); (A.A.)
| | - Mona-Elisabeth Revheim
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA; (W.Y.R.); (P.S.U.P.); (A.J.B.); (T.J.W.); (A.A.)
- Division of Radiology and Nuclear Medicine, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Problemveien 7, 0315 Oslo, Norway
- Correspondence: or
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The critical role of FDG-PET/CT imaging in assessing systemic manifestations of COVID-19 infection. Eur J Nucl Med Mol Imaging 2021; 48:956-962. [PMID: 33416953 PMCID: PMC7791152 DOI: 10.1007/s00259-020-05148-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Saboury B, Morris MA, Nikpanah M, Werner TJ, Jones EC, Alavi A. Reinventing Molecular Imaging with Total-Body PET, Part II: Clinical Applications. PET Clin 2020; 15:463-475. [PMID: 32888545 PMCID: PMC7462547 DOI: 10.1016/j.cpet.2020.06.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Total-body PET scans will initiate a new era for the PET clinic. The benefits of 40-fold effective sensitivity improvement provide new capabilities to image with lower radiation dose, perform delayed imaging, and achieve improved temporal resolution. These technical features are detailed in the first of this 2-part series. In this part, the clinical impacts of the novel features of total-body PET scans are further explored. Applications of total-body PET scans focus on the real-time interrogation of systemic disease manifestations in a variety of practical clinical contexts. Total-body PET scans make clinical systems biology imaging a reality.
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Affiliation(s)
- Babak Saboury
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA; Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, Baltimore, MD, USA; Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
| | - Michael A Morris
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA; Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, Baltimore, MD, USA
| | - Moozhan Nikpanah
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Thomas J Werner
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA
| | - Elizabeth C Jones
- Department of Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Abass Alavi
- Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104, USA.
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An update on the unparalleled impact of FDG-PET imaging on the day-to-day practice of medicine with emphasis on management of infectious/inflammatory disorders. Eur J Nucl Med Mol Imaging 2019; 47:18-27. [DOI: 10.1007/s00259-019-04490-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 08/16/2019] [Indexed: 12/16/2022]
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Hess S, Frary EC, Gerke O, Werner T, Alavi A, Høilund-Carlsen PF. FDG-PET/CT in venous thromboembolism. Clin Transl Imaging 2018. [DOI: 10.1007/s40336-018-0296-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Hess S, Madsen PH. Radionuclide Diagnosis of Pulmonary Embolism. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 906:49-65. [DOI: 10.1007/5584_2016_105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Abstract
PURPOSE Thrombosis in cancer may manifest itself as venous thromboembolic disease or tumor thrombosis (TT). We present our experience with incidentally detected TT on FDG PET/CT in 21 oncologic patients. PATIENTS AND METHODS We retrospectively reviewed all FDG PET/CT examinations during a 5-year period at the Army Hospital Research and Referral in New Delhi, India, and included all oncology cases with FDG-avid thrombosis in the report. The diagnosis of TT was based on FDG-avid solid masses inside the vessels in patients with known malignancy. The SUVmax was calculated. RESULTS Twenty-one patients were included; the most common malignancies were renal cell carcinoma (n=6), hepatocellular carcinoma (n=3), and lung cancer (n=3). Indication for the scan was initial staging (n=15) and suspected recurrence (n=6). Several vessels were affected, the most common was the inferior vena cava (n=14), but most other major branches of the venous vasculature was represented, and some patients had thrombi in several vessels. FDG uptake was linear in 7 patients, linear with a dilated vessel in 6 patients, and focal in 7 patients. The mean SUVmax of the primary tumors was 10.3 (range, 2.6-31.2; median, 6.9), and the mean SUVmax of the thrombi was 7.85 (range, 1.7-23.2; median, 6.1). All but 2 patients had additional FDG-avid foci besides the thrombus. CONCLUSIONS This study supports results from other smaller studies regarding the usefulness of FDG PET/CT in TT and corroborates the hypothesis that the SUVmax and the patterns of FDG uptake can be helpful for differentiating BT from TT in oncological patients.
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Hess S, Hansson SH, Pedersen KT, Basu S, Høilund-Carlsen PF. FDG-PET/CT in Infectious and Inflammatory Diseases. PET Clin 2014; 9:497-519, vi-vii. [DOI: 10.1016/j.cpet.2014.07.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Incidental venous thromboembolism detected by PET-CT in patients with cancer: Prevalence and impact on survival rate. Thromb Res 2014; 133:750-5. [DOI: 10.1016/j.thromres.2014.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 01/17/2014] [Accepted: 02/04/2014] [Indexed: 11/24/2022]
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Hess S, Blomberg BA, Zhu HJ, Høilund-Carlsen PF, Alavi A. The pivotal role of FDG-PET/CT in modern medicine. Acad Radiol 2014; 21:232-49. [PMID: 24439337 DOI: 10.1016/j.acra.2013.11.002] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 10/30/2013] [Accepted: 11/01/2013] [Indexed: 12/21/2022]
Abstract
The technology behind positron emission tomography (PET) and the most widely used tracer, 2-deoxy-2-[18F]fluoro-D-glucose (FDG), were both conceived in the 1970s, but the latest decade has witnessed a rapid emergence of FDG-PET as an effective imaging technique. This is not least due to the emergence of hybrid scanners combining PET with computed tomography (PET/CT). Molecular imaging has enormous potential for advancing biological research and patient care, and FDG-PET/CT is currently the most widely used technology in this domain. In this review, we discuss contemporary applications of FDG-PET and FDG-PET/CT as well as novel developments in quantification and potential future indications including the emerging new modality PET/magnetic resonance imaging.
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Deep Venous Thrombosis and Pulmonary Embolism Detected by FDG PET/CT in a Patient With Bacteremia. Clin Nucl Med 2013; 38:276-7. [DOI: 10.1097/rlu.0b013e3182817aaf] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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