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Comparison of 18F-NaF PET/CT with Other Imaging Methods in the Detection of Bone Metastases in Patients with Medullary Thyroid Cancer: a Report of a Series of 31 Cases

Nuclear Medicine and Molecular Imaging 2020년 54권 6호 p.281 ~ 291
Ueda Cristina Emiko, Duarte Paulo Schiavom, de Castroneves Luciana Audi, Coura-Filho George Barberio, Sado Heitor Naoki, Sapienza Marcelo Tatit, Hoff Ana Oliveira, Buchpiguel Carlos Alberto,
소속 상세정보
 ( Ueda Cristina Emiko ) - Sao Paulo Cancer Institute Division of Nuclear Medicine
 ( Duarte Paulo Schiavom ) - Sao Paulo Cancer Institute Division of Nuclear Medicine
 ( de Castroneves Luciana Audi ) - Sao Paulo Cancer Institute Division of Endocrinology
 ( Coura-Filho George Barberio ) - Sao Paulo Cancer Institute Division of Nuclear Medicine
 ( Sado Heitor Naoki ) - Sao Paulo Cancer Institute Division of Nuclear Medicine
 ( Sapienza Marcelo Tatit ) - University of Sao Paulo Medical School Department of Radiology and Oncology
 ( Hoff Ana Oliveira ) - Sao Paulo Cancer Institute Division of Endocrinology
 ( Buchpiguel Carlos Alberto ) - Sao Paulo Cancer Institute Division of Nuclear Medicine

Abstract


Purpose: To compare the 18F-NaF PET/CT studies (18F-NaF) with other imaging methods in the detection of skeletal metastases (SM) in patients with medullary thyroid cancer (MTC).

Methods: We retrospectively analyzed 31 patients with MTC who performed 18F-NaF to assess SM. The results of the 18F-NaF were compared with other imaging methods performed for metastasis detection: 99Tc-MDP bone scan (BS), magnetic resonance imaging (MRI), contrast-enhanced CT (CT), and 68Ga-Dotatate and 18F-FDG PET/CT studies. A qualitative analysis comparing the 18F-NaF findings with the ones of the other methods was performed, and the results were classified as superior (>), equal (=), and inferior (<).

Results: Eleven patients had no bone metastases detected on any of the imaging methods used. Twenty patients presented SM depicted on 18F-NaF. Of these 20 patients, 12 performed bone scan (in 9 18F-NaF?>?BS and in 3 18F-NaF?=?BS), 1 performed 18F-FDG (18F-NaF?>?18F-FDG), 4 performed 68Ga-Dotatate (in 2 18F-NaF?>?68Ga-Dotatate and in 2 18F-NaF?=?68Ga-Dotatate), 20 performed CT of at least one body segment (in 15 18F-NaF = CT and in 5 18F-NaF?>?CT), and 16 performed MRI of at least one body segment, and in all of them, the 18F-NaF was equal to the MRI. Beside this, the 18F-NaF detected SM in body segments not routinely scanned in MRI and CT.

Conclusion: In patients with MTC, the 18F-NaF seems to be equal or superior to other imaging modalities in the detection of SM and allows the analysis of the whole skeletal in a single study.

키워드

Fluorine; 18F; PET/CT; 18F-NaF; Medullary thyroid carcinoma; Bone metastases

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