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Clinical Value and Limitations of [11C]-Methionine PET for Detection and Localization of Suspected Parathyroid Adenomas

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Title: Clinical Value and Limitations of [11C]-Methionine PET for Detection and Localization of Suspected Parathyroid Adenomas
Authors: Herrmann, Ken Browse this author
Takei, Toshiki Browse this author
Kanegae, Kakuko Browse this author →KAKEN DB
Shiga, Tohru Browse this author →KAKEN DB
Buck, Andreas K. Browse this author
Altomonte, Jennifer Browse this author
Schwaiger, Markus Browse this author
Schuster, Tibor Browse this author
Nishijima, Kenichi Browse this author
Kuge, Yuji Browse this author →KAKEN DB
Tamaki, Nagara Browse this author →KAKEN DB
Keywords: MET-PET
MIBI scintigraphy
Ultrasound
Hyperparathyroidism
Diagnosis
Issue Date: Sep-2009
Publisher: Springer New York
Journal Title: Molecular Imaging and Biology
Volume: 11
Issue: 5
Start Page: 356
End Page: 363
Publisher DOI: 10.1007/s11307-009-0205-4
PMID: 19340488
Abstract: Purpose: The aim of this study was to assess the clinical value of [11C]methionine-PET (MET-PET) for detection and localization of parathyroid adenomas in patients without prior thyroidectomy. Methods: A retrospective analysis of patients with suspected hyperparathyroidism undergoing imaging with MET-PET was performed. Prior thyroidectomy was an exclusion criterion. 41 patients with a total of 49 MET-PET scans were included. MET-PET consisted of whole-body images obtained 15 - 20 min after injection of 430 ± 81 MBq of MET using a dedicated PET scanner. Imaging findings were validated by histology or other imaging studies and clinical follow-up on a lesion, side and location basis. Comparison of PET results to other imaging modalities including ultrasound, MIBI scintigraphy and morphological imaging (CT and/or MRI) and subgroup analysis of primary vs. secondary hyperparathyroidism was performed. Results: 23/49 PET scans revealed pathologic findings, whereas 26/49 scans were negative. Validation of PET findings for detection and localization of hyperthyroidism resulted in an overall sensitivity of MET-PET of 54%, 49% and 35% on a lesion, side and location basis, respectively. Sensitivity of MET-PET was inferior compared to ultrasonography (50% vs. 93%), MIBI scintigraphy (53% vs. 74%) and morphological imaging (52% vs. 74%). Subgroup analysis revealed higher sensitivity for MET-PET in sHPT than pHPT (62% vs. 43%; side basis). Conclusions: In patients with initial diagnosis of hyperparathyroidism and no prior thyroidectomy, the sensitivity of MET-PET for detection and localization of hyperparathyroidism is markedly lower compared to previous reports. While performance was better in sHPT, MET-PET can not be recommended for pHPT localization in this clinically relevant subcollective.
Rights: The original publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/43808
Appears in Collections:医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 玉木 長良

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