基于疑似前列腺癌患者不同PSA范围的PSMA-PET成像的PRIMARY评分的表现:一项回顾性研究
Fuhao Zhang1, Xiang Li1, Jingliang Zhang2
1Department of Nuclear Medicine, Xijing Hospital, Fourth Military Medical University Xi'an 710032, Shaanxi, China.
American journal of nuclear medicine and molecular imaging
|November 24, 2025
概括
使用68Ga-PSMA PET/CT优化前列腺癌诊断的PRIMARY得分值可以提高准确性. 对于PSA>20 ng/mL的门值为4,显著提高了特异性,减少了不必要的活检.
科学领域:
- 核医学就是核医学.
- 放射性药理学 是一种放射性药理学.
- 在瘤学瘤学.
背景情况:
- 前列腺特异性抗原 (PSA) 水平对于前列腺癌查至关重要.
- 从临床上显著的前列腺癌 (csPCa) 与惰性疾病的区别仍然具有挑战性.
- 用-68 (68Ga) 标记的前列腺特异性膜抗原 (PSMA) 位子发射断层扫描/计算机断层扫描 (PET/CT) 可以更好地可视化前列腺癌.
研究的目的:
- 改进最佳的PRIMARY得分值,以在各种PSA范围中诊断csPCa.
- 为了提高PRIMARY得分的诊断准确度,与68Ga-PSMA PET/CT.一起使用.
- 通过改善风险分层来减少不必要的前列腺活检.
主要方法:
- 对373名接受68Ga-PSMA PET/CT治疗的患者进行了回顾性分析,他们被怀疑患有csPCa.
- 使用68Ga-PSMA PET/CT对PRIMARY得分诊断有效性的独立评估.
- 接收器运行特性 (ROC) 曲线分析以确定诊断性能和最佳值.
- 在不同PSA范围 (≤20 ng/mL和>20 ng/mL) 中比较PRIMARY得分的疗效.
主要成果:
- 在PSA范围内,PRIMARY得分显示了高诊断准确度 (AUC>0.8),具有适当的值.
- 在PSA>20 ng/mL的患者中,Primary得分值为4显著增加了特异性 (91.2%) 与3的值相比 (70.6%),同时保持了高灵敏度 (98.4%).
- 使用精细值,91.2%的患者避免了不必要的活检,csPCa的最低遗漏率为1.6%.
结论:
- 当与68Ga-PSMA PET/CT相结合时,PRIMARY评分是跨不同PSA水平的csPCa诊断的宝贵工具.
- 对于PSA ≤20 ng/mL,建议使用Primary得分值为3.
- 建议PSA水平在20 ng/mL至50 ng/mL之间为4的更高值,以优化诊断性能和减少活检.
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