在[68Ga]Ga-PSMA PET/CT中转移分布模式的预测值,用于[177Lu]Lu-PSMA治疗
Y B Cayirli1, U Elboga1, I Dogan2
1Department of Nuclear Medicine, Gaziantep University, Gaziantep, Turkey.
Revista espanola de medicina nuclear e imagen molecular
|September 3, 2025
概括
-68 PSMA PET/ CT 扫描中的转移分布模式可以预测接受-177 PSMA 治疗的晚期前列腺癌患者的治疗结果. 这种成像可以帮助定制治疗策略.
科学领域:
- 核医学
- 癌症学
- 放射性药物治疗
背景情况:
- 抗化疗和割的前列腺癌 (PCa) 是一个重大的临床挑战.
- 卢-177 PSMA (177Lu-PSMA) 疗法已成为晚期PCa的有前途的治疗选择.
- 预测治疗反应对于优化患者管理至关重要.
研究的目的:
- 评估-68 PSMA PET/CT (68Ga-PSMA-11 PET/CT) 扫描显示的转移分布模式的预测能力.
- 为了将这些模式与接受177Lu-PSMA-617放射性连接体治疗的患者的治疗结果相关联,以治疗转移性抵抗割的前列腺癌 (mCRPC).
主要方法:
- 用177Lu-PSMA-617治疗的48名mCRPC患者的回顾性分析.
- 对68Ga-PSMA-11PET/CT扫描进行转移负荷和分布的评估.
- 使用RECIP 1.0标准和统计分析对成像结果与分子反应和疾病进展的相关性.
主要成果:
- 58. 3% 的患者对177Lu-PSMA-617治疗有反应.
- 分子反应与腺SUV平均和最高miM1阶段有关.
- 分子进展与淋巴结转移,仅骨转移和特定PSMA比率显著相关,这表明转移负担的分布.
结论:
- 68Ga-PSMA-11 PET/CT上的转移分布模式是对177Lu-PSMA-617治疗反应的有价值预测指标.
- 基于成像的转移负担的评估可以帮助分层患者和预测晚期前列腺癌的结果.
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