吸收期对F-DCFPyL-PSMA PET/CT最大标准化吸收值的影响18
Anthony-Joe Nassour1, Anika Jain1, Hadia Khanani1
1Department of Urology, Sydney Adventist Hospital, Wahroonga, NSW 2076, Australia.
Cancers
|March 28, 2025
概括
18F-DCFPyL PSMA PET/CT成像的最佳吸收时间为120分钟. 较长的吸收期显著增加了最大标准化吸收值 (SUVmax),影响了前列腺癌的诊断.
科学领域:
- 核医学是一种核医学.
- 放射化学 放射化学是指辐射化学.
- 在瘤学瘤学.
背景情况:
- 在PSMA PET成像中最大标准化吸收值 (SUVmax) 可以受到放射追踪器吸收持续时间的影响.
- 理想的成像时间为2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 需要进一步的定义.
研究的目的:
- 研究不同吸收时间对18F-DCFPyLPSMA PET/CT中的SUVmax的影响.
- 确定诊断临床显著前列腺癌的最佳获取窗口.
主要方法:
- 60名PI-RADS 4或5病变的未经活检的男性接受了18F-DCFPyL PSMA PET/CT.
- 在注射后60,90分钟和120分钟前性测量SUVmax.
- 结果与活检和组织病理学发现相关.
主要成果:
- 观察到SUVmax在更长的摄入期 (p < 0.001) 时的统计显著增加.
- 在SUVmax (29.98%) 中,最大的变化发生在60到120分钟之间.
- 在评估的时间点中,SUVmax的平均绝对差异在评估时间点之间有所不同.
结论:
- SUVmax是一个动态度指标,受吸收期的显著影响.
- 在注射后120分钟内获得18F-DCFPyL,支持PSMA PET/CT.
- 需要进一步的研究来确认其他基于18F的PSMA标记物的最佳时间.
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