68Ga-Trivehexin PET/CT: a promising novel tracer for primary hyperparathyroidism

原发性甲状旁腺功能亢进 医学 示踪剂 核医学 PET-CT 正电子发射断层摄影术 甲状旁腺功能亢进 正电子发射断层摄影术 放射科 医学物理学 内科学 物理 核物理学
作者
Serkan Kuyumcu,Dilara Denizmen,Duygu Has Şimşek,Arzu Poyanlı,Ayşe Kubat Üzüm,Fikret Büyükkaya,Emine Göknur Işık,Semen Önder,Nihat Aksakal,Zeynep Gözde Özkan,Yasemin Şanlı
出处
期刊:European Journal of Nuclear Medicine and Molecular Imaging [Springer Science+Business Media]
标识
DOI:10.1007/s00259-024-06846-z
摘要

Abstract Introduction This study aims to assess 68 Ga-Trivehexin PET/CT for detecting hyperfunctioning parathyroid tissue in comparison to [ 99m Tc]Tc-MIBI scintigraphy-SPECT/CT (MIBI scan) in patients with primary hyperparathyroidism (PHPT). Methods The cohort comprised 13 patients diagnosed with PHPT based on biochemical analyses, including serum calcium, phosphorus, and parathyroid hormone (PTH) levels. Each participant underwent cervical ultrasonography, MIBI scan, and 68 Ga-Trivehexin PET/CT imaging. Complementary 4D-CT and [ 18 F]fluorocholine PET/CT were conducted in 7 patients. Ten lesions of 7 patients underwent PTH wash-out (WO) procedure. 68 Ga-Trivehexin PET/CT findings were compared with other modalities and PTH-WO results. Results Ten patients had sporadic PHPT, while 3 were diagnosed with MEN-1 syndrome-associated PHPT. One patient did not have any identifiable parathyroid lesion across the imaging modalities. On a patient-based analysis, MIBI scan and 68 Ga-Trivehexin PET/CT identified parathyroid lesions in 10 and 11 patients, respectively. However, 68 Ga-Trivehexin PET/CT detected 7 additional parathyroid lesions that were negative on the MIBI scan. Consequently, 17 lesions were identified and confirmed as hyperfunctioning parathyroid tissue through imaging, PTH-WO, or a combination of both modalities. In lesion-based evaluation, 68 Ga-Trivehexin identified 16 lesions compared to 10 by MIBI scan, resulting in a detection rate of 94.1% and 58.8%, respectively. Notably, in three patients who underwent [ 18 F]fluorocholine PET/CT, no lesions were detected; yet 68 Ga-Trivehexin PET/CT successfully identified parathyroid lesions in two of these patients. Conclusion Our study provides the first evidence that 68 Ga-Trivehexin PET/CT can effectively identify hyperfunctioning parathyroid tissue with a high detection rate warranting further investigations to comprehensively explore its potential in PHPT management.
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