18 F-FDG gallbladder uptake: observation from a total-body PET/CT scanner
Total-body positron emission tomography/computed tomography (PET/CT) scanners are characterized by higher signal collection efficiency and greater spatial resolution compared to conventional scanners, allowing for delayed imaging and improved image quality. These advantages may also lead to better d...
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Published in | BMC medical imaging Vol. 23; no. 1; p. 9 |
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Main Authors | , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
10.01.2023
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Subjects | |
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Abstract | Total-body positron emission tomography/computed tomography (PET/CT) scanners are characterized by higher signal collection efficiency and greater spatial resolution compared to conventional scanners, allowing for delayed imaging and improved image quality. These advantages may also lead to better detection of physiological processes that diagnostic imaging professionals should be aware of. The gallbladder (GB) is not usually visualized as an
F-2-fluorodeoxyglucose (
F-FDG)-avid structure in routine clinical PET/CT studies; however, with the total-body PET/CT, we have been increasingly visualizing GB activity without it being involved in an inflammatory or neoplastic process. The aim of this study was to report visualization rates and characteristics of GB
F-FDG uptake observed in both healthy and oncological subjects scanned on a total-body PET/CT system.
Scans from 73 participants (48 healthy and 25 with newly diagnosed lymphoma) who underwent
F-FDG total-body PET/CT were retrospectively reviewed. Subjects were scanned at multiple timepoints up to 3 h post-injection. Gallbladder
F-FDG activity was graded using liver uptake as a reference, and the pattern was qualified as present in the wall, lumen, or both. Participants' characteristics, such as age, sex, body-mass index, blood glucose, and other clinical parameters, were collected to assess for any significant correlation with GB
F-FDG uptake.
All 73 subjects showed GB uptake at one or more imaging timepoints. An increase in uptake intensity overtime was observed up until the 180-min scan, and the visualization rate of GB
F-FDG uptake was 100% in the 120- and 180-min post-injection scans. GB wall uptake was detected in a significant number of patients (44/73, 60%), especially at early timepoint scans, whereas luminal activity was detected in 71/73 (97%) subjects, especially at later timepoint scans. No significant correlation was found between GB uptake intensity/pattern and subjects' characteristics.
The consistent observation of GB
F-FDG uptake recorded in this study in healthy participants and subjects with a new oncological diagnosis indicates that this is a normal physiologic finding rather than representing an exception. |
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AbstractList | Total-body positron emission tomography/computed tomography (PET/CT) scanners are characterized by higher signal collection efficiency and greater spatial resolution compared to conventional scanners, allowing for delayed imaging and improved image quality. These advantages may also lead to better detection of physiological processes that diagnostic imaging professionals should be aware of. The gallbladder (GB) is not usually visualized as an
F-2-fluorodeoxyglucose (
F-FDG)-avid structure in routine clinical PET/CT studies; however, with the total-body PET/CT, we have been increasingly visualizing GB activity without it being involved in an inflammatory or neoplastic process. The aim of this study was to report visualization rates and characteristics of GB
F-FDG uptake observed in both healthy and oncological subjects scanned on a total-body PET/CT system.
Scans from 73 participants (48 healthy and 25 with newly diagnosed lymphoma) who underwent
F-FDG total-body PET/CT were retrospectively reviewed. Subjects were scanned at multiple timepoints up to 3 h post-injection. Gallbladder
F-FDG activity was graded using liver uptake as a reference, and the pattern was qualified as present in the wall, lumen, or both. Participants' characteristics, such as age, sex, body-mass index, blood glucose, and other clinical parameters, were collected to assess for any significant correlation with GB
F-FDG uptake.
All 73 subjects showed GB uptake at one or more imaging timepoints. An increase in uptake intensity overtime was observed up until the 180-min scan, and the visualization rate of GB
F-FDG uptake was 100% in the 120- and 180-min post-injection scans. GB wall uptake was detected in a significant number of patients (44/73, 60%), especially at early timepoint scans, whereas luminal activity was detected in 71/73 (97%) subjects, especially at later timepoint scans. No significant correlation was found between GB uptake intensity/pattern and subjects' characteristics.
The consistent observation of GB
F-FDG uptake recorded in this study in healthy participants and subjects with a new oncological diagnosis indicates that this is a normal physiologic finding rather than representing an exception. |
Author | Calabro', Anna Cassim, Christopher R Abdelhafez, Yasser G Cherry, Simon R Nardo, Lorenzo Dondi, Francesco Albano, Domenico Bertagna, Francesco Triumbari, Elizabeth K A Chen, Jr, Moon S Badawi, Ramsey D Sen, Fatma Spencer, Benjamin A |
Author_xml | – sequence: 1 givenname: Anna surname: Calabro' fullname: Calabro', Anna email: anna_calabro@hotmail.it organization: Department of Radiology, EXPLORER Molecular Imaging Center, University of California, Davis, 3195 Folsom Blvd, Davis, Sacramento, CA, 95816, USA. anna_calabro@hotmail.it – sequence: 2 givenname: Yasser G surname: Abdelhafez fullname: Abdelhafez, Yasser G organization: Nuclear Medicine Unit, South Egypt Cancer Institute, Assiut University, Asyut, Egypt – sequence: 3 givenname: Elizabeth K A surname: Triumbari fullname: Triumbari, Elizabeth K A organization: Nuclear Medicine Unit, TracerGLab, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy – sequence: 4 givenname: Benjamin A surname: Spencer fullname: Spencer, Benjamin A organization: Department of Biomedical Engineering, University of California Davis, Davis, CA, USA – sequence: 5 givenname: Moon S surname: Chen, Jr fullname: Chen, Jr, Moon S organization: Department of Internal Medicine, University of California Davis, Davis, CA, USA – sequence: 6 givenname: Domenico surname: Albano fullname: Albano, Domenico organization: Nuclear Medicine Department, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy – sequence: 7 givenname: Christopher R surname: Cassim fullname: Cassim, Christopher R organization: Department of Radiology, Sangre Grande Hospital, Eastern Regional Health Authority, Sangre Grande, Trinidad and Tobago – sequence: 8 givenname: Francesco surname: Bertagna fullname: Bertagna, Francesco organization: Nuclear Medicine Department, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy – sequence: 9 givenname: Francesco surname: Dondi fullname: Dondi, Francesco organization: Nuclear Medicine Department, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy – sequence: 10 givenname: Simon R surname: Cherry fullname: Cherry, Simon R organization: Department of Biomedical Engineering, University of California Davis, Davis, CA, USA – sequence: 11 givenname: Ramsey D surname: Badawi fullname: Badawi, Ramsey D organization: Department of Biomedical Engineering, University of California Davis, Davis, CA, USA – sequence: 12 givenname: Fatma surname: Sen fullname: Sen, Fatma organization: Department of Radiology, EXPLORER Molecular Imaging Center, University of California, Davis, 3195 Folsom Blvd, Davis, Sacramento, CA, 95816, USA – sequence: 13 givenname: Lorenzo surname: Nardo fullname: Nardo, Lorenzo organization: Department of Radiology, EXPLORER Molecular Imaging Center, University of California, Davis, 3195 Folsom Blvd, Davis, Sacramento, CA, 95816, USA |
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Keywords | Positron emission tomography computed tomography Sodium-glucose transporter 1 Total-body PET/CT Fluorodeoxyglucose F18 Gallbladder |
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SubjectTerms | Fluorodeoxyglucose F18 Gallbladder - diagnostic imaging Humans Positron Emission Tomography Computed Tomography Positron-Emission Tomography - methods Radiopharmaceuticals Retrospective Studies Tomography, X-Ray Computed - methods |
Title | 18 F-FDG gallbladder uptake: observation from a total-body PET/CT scanner |
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