[68Ga]Ga-LNC1007 versus 2-[18F]FDG in the evaluation of patients with metastatic differentiated thyroid cancer: a head-to-head comparative study.

IF 8.6 1区医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

European Journal of Nuclear Medicine and Molecular Imaging Pub Date : 2024-10-15 DOI:10.1007/s00259-024-06930-4

Yun Chen,Shan Zheng,Jie Zang,Zezhong Shao,Dongmei Tu,Qun Liu,Xiaoyuan Chen,Weibing Miao,Jingjing Zhang

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Abstract

PURPOSE This head-to-head comparison study aimed to compare the performance of [68Ga]Ga-FAPI-RGD (LNC1007) and 2-[18F]FDG PET/CT in the evaluation of patients with metastatic differentiated thyroid cancer (mDTC). METHODS Ten unexplained hyperthyroglobulinemia (UHTg) patients and 20 patients with definite metastatic lesions of thyroid cancer (DmDTC) were enrolled in the study. All patients underwent both [68Ga]Ga-LNC1007 and 2-[18F]FDG PET/CT within 1 week. The final diagnosis was based on histopathological results and a comprehensive evaluation of laboratory tests and multimodal imaging characteristics. RESULTS In patients with UHTg, [68Ga]Ga-LNC1007 PET/CT detected more metastatic lymph nodes (LNs) (17 vs. 15, P = 0.317) and lung lesions (2 vs. 0) than 2-[18F]FDG. In patients with DmDTC, [68Ga]Ga-LNC1007 PET/CT also detected more true positive lesions than 2-[18F]FDG (Total: 133 vs. 103, LN: 20 vs. 15, lung: 18 vs. 10, bone: 87 vs.73). [68Ga]Ga-LNC1007 PET/CT demonstrated significantly higher SUVmax (Total: 6.30 vs. 3.84, LN: 8.28 vs. 4.82, Lung: 3.31 vs. 1.49, Bone: 5.73 vs. 3.87, all P < 0.05) and TBR (Total: 6.92 vs. 4.93, LN: 6.48 vs. 4.16, Lung: 5.16 vs. 2.57, Bone: 7.22 vs. 5.41, all P < 0.05) in true positive lesions compared to 2-[18F]FDG. Specifically, the sensitivity of [68Ga]Ga-LNC1007 PET/CT was higher than that of 2-[18F]FDG in detecting lung and bone metastases (94.7% vs. 52.6% and 100% vs. 83.9%, all P < 0.05). [68Ga]Ga-LNC1007 PET/CT exhibited better specificity and accuracy in diagnosing LNs (96.9% vs. 66.7% and 96.3% vs. 68.5%, all P < 0.05). However, the specificity of [68Ga]Ga-LNC1007 for bone metastasis was inferior to 2-[18F]FDG (15.4% vs. 88.5%, P < 0.05). CONCLUSION Compared with 2-[18F]FDG, [68Ga]Ga-LNC1007 PET/CT could detect more metastatic lesions, with higher SUVmax and TBR, in patients with mDTC. [68Ga]Ga-LNC1007 had better accuracy in the diagnosis of LN and lung metastasis. Trial registration ClinicalTrials.gov NCT05515783. Registered 01 May 2022. URL of registry https://classic. CLINICALTRIALS gov/ct2/show/NCT05515783.

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[68Ga]Ga-LNC1007与2-[18F]FDG在转移性分化型甲状腺癌患者评估中的应用：一项正面比较研究。

目的这项头对头比较研究旨在比较[68Ga]Ga-FAPI-RGD (LNC1007)和2-[18F]FDG PET/CT在评估转移性分化型甲状腺癌（mDTC）患者时的性能。方法研究纳入了10例不明原因的高甲状腺球蛋白血症（UHTg）患者和20例甲状腺癌明确转移病灶（DmDTC）患者。所有患者均在一周内接受了[68Ga]Ga-LNC1007和2-[18F]FDG PET/CT检查。结果在UHTg患者中，[68Ga]Ga-LNC1007 PET/CT比2-[18F]FDG检测到更多的转移性淋巴结（LN）（17对15，P=0.317）和肺部病变（2对0）。在DmDTC患者中，[68Ga]Ga-LNC1007 PET/CT检测到的真阳性病灶也多于2-[18F]FDG（总阳性：133对103，LN：20对15，肺：18对10，骨：87对73）。[68Ga]Ga-LNC1007 PET/CT 显示出明显更高的 SUVmax（总 SUVmax：6.30 对 3.84，LN：8.28 对 4.82，肺：3.31 对 1.49，骨：5.73 对 3.87，所有 P < 0.05）和 TBR（总：6.92 vs. 4.93，LN：6.48 vs. 4.16，肺：5.16 vs. 2.57，骨：7.22 vs. 5.41，均 P <0.05）在真阳性病变中的敏感性高于 2-[18F]FDG。具体而言，[68Ga]Ga-LNC1007 PET/CT在检测肺转移和骨转移方面的灵敏度高于2-[18F]FDG（94.7%对52.6%，100%对83.9%，所有P均<0.05）。[68Ga]Ga-LNC1007 PET/CT在诊断LN方面表现出更好的特异性和准确性（96.9%对66.7%，96.3%对68.5%，所有P均<0.05）。结论与2-[18F]FDG相比，[68Ga]Ga-LNC1007 PET/CT能在mDTC患者中发现更多转移病灶，SUVmax和TBR更高。[68Ga]Ga-LNC1007在诊断LN和肺转移方面具有更好的准确性。试验注册 ClinicalTrials.gov NCT05515783。注册日期：2022年5月1日。注册网址 https://classic.CLINICALTRIALSgov/ct2/show/NCT05515783。

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来源期刊

European Journal of Nuclear Medicine and Molecular Imaging 医学-核医学

CiteScore

15.60

自引率

9.90%

发文量

392

审稿时长

3 months

期刊介绍： The European Journal of Nuclear Medicine and Molecular Imaging serves as a platform for the exchange of clinical and scientific information within nuclear medicine and related professions. It welcomes international submissions from professionals involved in the functional, metabolic, and molecular investigation of diseases. The journal's coverage spans physics, dosimetry, radiation biology, radiochemistry, and pharmacy, providing high-quality peer review by experts in the field. Known for highly cited and downloaded articles, it ensures global visibility for research work and is part of the EJNMMI journal family.