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提高了使用延迟[68 Ga]Ga-PSMA PET/CT成像进行初级评分的准确性和可靠性

Kaan Akçay¹, Gamze Beydağı¹, Onur Erdem Şahin²

¹Yeditepe University Faculty of Medicine, Department of Nuclear Medicine, İstanbul, Türkiye.

Molecular imaging and radionuclide therapy

|February 7, 2025

概括

延迟的Ga-PSMA PET/CT成像可以提高前列腺癌的检测和诊断可靠性. 延迟成像提高了PRIMARY评分的准确性,提高了临床上显著的前列腺癌 (csPCa) 检测的灵敏度.

科学领域:

核医学是一种核医学.
放射学放射学是指放射学
尿瘤学尿瘤学

背景情况:

前列腺特异性膜抗原 (PSMA) 定子发射断层扫描/计算机断层扫描 (PET/CT) 对前列腺癌的分期至关重要.
标准成像协议包括在早期时间点进行吸收评估.
延迟成像可以通过减少背景活动和增强瘤与背景比率来改善病变的表征.

研究的目的:

为了评估使用[⁶⁸Ga]Ga-PSMA PET/CT在标准时间点和延迟时间点进行PRIMARY评分的有效性.
评估延迟成像在改善前列腺癌检测初级评分中的附加值.

主要方法:

140名国际泌尿病学学会 (ISUP) 1-2级患者接受了标准 (中位数为60分钟) 和延迟 (中位数为138分钟) [Ga]Ga-PSMA PET/CT在急性前列腺切除术前.
图像由核医学医生审查,以进行PRIMARY评分,并进行观察者内部和观察者间协议分析.

主要成果:

延迟成像显著地将PRIMARY分数转移到更高的值 (90%与3-5分数的71%相比).
对于临床显著的前列腺癌 (csPCa) 的敏感性从71%增加到92%以延迟PRIMARY评分.
在延迟成像时,观察者间和观察者内部的一致性有所改善 (Fleiss kappa 0.61-0.72 vs 0.47-0.52).

结论:

延迟的Ga-PSMA PET/CT成像增强了恶性和良性病变之间的差异化.
延迟成像提高了用于检测csPCa.的PRIMARY评分的可靠性和准确性.
延迟成像的增强可靠性得到了观察者之间和观察者内部更好的协议的支持.

关键词:

前列腺特异性膜抗原.积极监督是指积极的监督.临床上显著的前列腺癌.主要阶段化主要阶段化前列腺活检活检前列腺活检前列腺癌是前列腺癌.

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