在外科手术内进行分子正子发射断层扫描成像,用于在外科手术内评估激进前列腺切除试样
Christopher Darr1, Pedro Fragoso Costa2, Theresa Kahl1
1Department of Urology, University Hospital Essen, Essen, Germany.
European urology open science
|June 26, 2023
概括
切除前列腺样本的PET/CT成像准确检测前列腺特异性膜抗原 (PSMA) 激发性病变和淋巴结转移. 这种新的成像技术有望改善高风险前列腺癌患者的手术精度和瘤结果.
科学领域:
- 核医学就是核医学.
- 瘤成像学成像学
- 手术病理学手术病理学
背景情况:
- 激进前列腺切除术 (RP) 和淋巴切除术是高风险前列腺癌的标准治疗方法.
- 准确的手术边缘和淋巴结干涉的术内评估对于最佳的患者结果至关重要.
- 目前用于评估切除样本的方法可能在灵敏度和速度方面存在局限性.
研究的目的:
- 为了评估外科手术内外活体样本正子发射断层扫描/计算机断层扫描 (PET/CT) 对激进前列腺切除和淋巴切除样本的成像的诊断价值.
- 评估样本PET/CT与传统PET/CT发现之间的相关性.
- 为了确定样本PET/CT的可行性,用于手术内边际评估.
主要方法:
- 一项前性,两中心可行性研究,涉及十名高风险前列腺癌患者.
- 患者接受了手术前前列腺特异性膜抗原 (PSMA) PET/CT成像.
- 切除的急性前列腺切除和淋巴切除样本使用一种新的手术内样本PET/CT装置进行成像.
- 结果与传统的PET/CT和组织病理学进行了比较.
主要成果:
- 标本PET/CT成功可视化了在分期多参数磁共振成像上发现的所有索引病变.
- 在检测可疑的痕迹焦点的样本PET/CT和常规PET/CT之间观察到强烈的相关性 (皮尔森系数0.935).
- 标本PET/CT确定了所有已知的淋巴结转移和三个以前未检测到的转移.
- 阳性或接近的外科边缘 (<1毫米) 通过样本PET/CT准确地可视化,与他的病理学相关性良好.
结论:
- 内科手术外生样本PET/CT是一种可行的和有价值的工具,用于检测激进前列腺切除和淋巴切除样本中的PSMA-avid病变.
- 该技术与传统的PET/CT和组织病理学具有很高的一致性,有助于在手术期间的决策.
- 需要进一步的研究来比较标本PET/CT与冷截面分析,以评估边际及其对生物化学无复发生存的影响.
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