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18F-FDG PET/MRI用于直肠癌术前放化疗后进行TNM再分期的初步经验

18F-FDG PET/MRI for rectal cancer TNM restaging after preoperative chemoradiotherapy: initial experience
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摘要 目的:18F-FDG PET/MRI是近年来在肿瘤影像学中引入的一种新的混合成像技术,显示出良好的应用前景。本研究旨在探讨全身18F-FDG PET/MRI对局部晚期直肠癌术前放化疗后临床病理分期的预测价值。方法:本研究是一项前瞻性的观察研究。对一家三级转诊医院的36例局部晚期直肠癌患者(其中男性25例,患者中位年龄68.5岁)进行术前放化疗前后的PET/MRI和胸腹CT检查,以评估肿瘤状态。其中27例患者行低位前切除术或腹会阴切除术。9例临床完全缓解的患者接受器官保留治疗(8例局部切除,1例观察等待),随访时间>1年。一位放射科医生基于患者盆腔的MRI和CT评估肿瘤状态,另一位放射科医生和一位核医学科医生一同基于PET/MRI评估肿瘤状态。放射科医生对影像学检查的评估结果将会与患者术后组织学检查的结果或随访期间的影像学检查结果进行对比(评估不同影像学方法识别ypT0与ypT≥1和ypN0与ypN+的能力)。转移瘤的确诊需要活检病理学结果或术前放化疗结束至少1年后随访的CT结果来进行证实。使用标准公式计算成像技术的灵敏度、特异度和准确率。
出处 《结直肠肛门外科》 2020年第2期220-221,共2页 Journal of Colorectal & Anal Surgery
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