Prostate:移行带前列腺癌中,18 F-DCFPyL PET诊断与MRI 诊断哪个更好?

2021-10-02 AlexYang MedSci原创

比较了18F-DCFPyL正电子发射断层扫描(PET)和多参数磁共振成像(mp-MRI)在诊断移行带(TZ)前列腺癌(PCa)中的性能。

前列腺癌(PCa)是男性中最常见的恶性泌尿系统肿瘤之一。前列腺在解剖学上分为外周区和中央腺体,中央腺体包括移行区(TZ)和中央区。PCa主要发生在前列腺的外周区,只有约30%的比例发生在TZ。由于TZ的位置较深,传统的数字直肠检查和针头活检检查方法,很容易错过TZ PCa。

近期,来自中国的研究人员在《Prostate》杂志上发表文章,旨在比较18F-DCFPyL正电子发射断层扫描(PET)和多参数磁共振成像(mp-MRI)在诊断移行带(TZ)前列腺癌(PCa)中的性能

研究为回顾性设计,包括2019年1月至2020年6月接受18 F-DCFPyL PET/MRI的20名患者和接受18 F-DCFPyL PET/CT和MRI的32名患者。所有患者都有TZ病变,并接受了前列腺活检。2名核医学医师(1名高级,1名初级)根据分子影像前列腺特异性膜抗原评分系统和前列腺影像报告和数据系统2.1版(PI-RADS v2.1),独立评估了每个TZ病变。前列腺活检的组织学诊断作为参考标准,并使用医师判读结果和接受者操作特征(AUC-ROC)曲线下面积比较了上述两种方法的诊断性能。

结果发现,在52名患者中,43人患有TZ PCa。在医师判读结果一致性方面,18 F-DCFPyL PET的kappa值为0.883,mp-MRI为0.393。对于PET,两位医师的诊断敏感性、特异性和准确性相同,分别为93.0%、77.8%和90.4%。对于mp-MRI,医师1(高级)的诊断敏感性、特异性和准确性分别为67.4%、33.3%和61.5%,医师(初级)为51.2%、44.4%和51.9%。因此,PET表现均优于mp-MRI。另外,医师1判读结果的AUC为0.872,mp-MRI为0.584,p=0.0209;医师2判读结果的AUC为0.860,mp-MRI为0.505,p=0.0213。在43名TZ PCa患者中,18 F-DCFPyL PET检测到1例CT漏诊的远处骨转移,以及1例CT和MRI漏诊的2个小淋巴结转移。

18 F-DCFPyL PET和MRI在TZ PCa中的诊断表现

综上所述,这些结果表明,18 F-DCFPyL PET的判读结果几乎与医师的经验无关,在评估TZ病变时更加客观,比mp-MRI有更高的诊断价值

原始出处:

Yachao Liu , Yanliang Dong , Jiajin Liu et al. Comparison between 18 F-DCFPyL PET and MRI for the detection of transition zone prostate cancer. Prostate. Sep 2021

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    2021-10-04 lsndxfj
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    2021-10-04 sunylz
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    2022-03-15 feather89

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