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Demonstration of in-vivo simultaneous 3D imaging with F-FDG and NaI using Compton-PET system.
Sci Rep
September 2024
Unit of Synergetic Studies for Space, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto, 606-8502, Japan.
Simultaneous imaging of the SPECT tracer I and PET tracer F is important in the diagnosis of high- and low-grade thyroid cancers because high-grade thyroid cancers have high F-FDG and low I uptake, while low-grade thyroid cancers have high I and low F-FDG uptake. In this study, NaI and F-FDG were simultaneously imaged using the Compton-PET system, in vivo. The angular resolution and sensitivity of the Compton camera with 356 keV gamma ray measured using a Ba point source were 12.
View Article and Find Full Text PDFExpect the Unexpected: Artifacts From Lodged 124I Capsule in Esophagus on PET/CT.
Clin Nucl Med
June 2022
From the Division of Radiological Sciences, Department of Nuclear Medicine and Molecular Imaging, Singapore General Hospital.
Article Synopsis
- - A 61-year-old woman with thyroid cancer received a 124I-PET/CT scan after taking an oral 124I capsule, but it got stuck in her esophagus instead of passing through.
- - The study demonstrates issues with imaging artifacts caused by the lodged capsule and the value of using non-attenuation correction images in similar situations.
- - It emphasizes the need for patients to drink enough water after taking iodine capsules to minimize radiation exposure to the esophagus.
Artifact from I-Contaminated Mask in Postradioiodine Therapy Scintigraphy.
J Nucl Med Technol
December 2021
Nuclear Medicine Unit, University Hospital of Pisa, Pisa, Italy.
A patient wearing the mandatory face mask because of the ongoing coronavirus disease 2019 pandemic underwent postradioiodine therapy scintigraphy. The spot view of the neck showed an area of uptake that was later demonstrated to be caused by contamination of the mask. This finding has led to updating the scan procedure for posttherapy scintigraphy by replacing the patients' masks before the scan acquisition.
View Article and Find Full Text PDFEven Small Pleural Effusion Could Be Potential Pitfall on Posttherapeutic 131I Scintigraphy.
Clin Nucl Med
November 2020
Department of Nuclear Medicine, Zigong First People's Hospital, Zigong, Sichuan, People's Republic of China.
Pleural and pericardiac effusion could have radioiodine accumulation and be potential pitfall on posttherapeutic I whole-body scintigraphy. However, the volume of the effusion was relatively massive in the previous publications. We report a case of pleural effusion with a very small volume also had radioiodine uptake in a 37-year-old man.
View Article and Find Full Text PDFAn unusual false-positive uptake of radioiodine caused by pulmonary vasculature: The usefulness of SPECT/CT.
Hell J Nucl Med
June 2021
Department of Nuclear Medicine, The Affiliated Hospital of North Sichuan Medical College, No.1, Maoyuan South Road, 637000 Nanchong, Sichuan province, P.R.China.
There are numerous conditions that may cause false-positive findings on iodine scintigraphy, such as vascular structure, mediastinum, bronchiectasis, cystic lesions and mature cystic teratoma; however, many of their mechanisms remain to be elucidated. Single photon emission tomography/computed tomography (SPECT/CT) imaging can be conducive to avoiding potential pitfalls. In addition, the nuclear physicians have to bear in mind that iodine-131 (I) uptake in pulmonary vasculature can be a possible cause of false-positive uptake when they interpret I whole body scan (WBS).
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