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探索多参数定量磁共振成像的价值,以避免PI-RADS 3-4患者不必要的活检
Zijian Gong1,2, Fei Jiang1,2, Zhixuan Liu1,2
1Department of Radiology, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.
这项研究表明,结合胺质子转移加权MRI (APTw-MRI),扩散曲解成像 (DKI) 和明显扩散系数 (ADC) 改善PI-RADS 3-4病变中的前列腺癌检测. 这种新型模型有助于更好地分层患者进行活检的必要性.
科学领域:
- 放射学 放射学是一门学科.
- 在瘤学瘤学.
- 医疗成像医学成像
背景情况:
- 前列腺癌的诊断依赖于准确的风险分层,以实现最佳的患者管理.
- 前列腺成像报告和数据系统 (PI-RADS) 3-4分的得分提出了诊断挑战,往往导致有争议的活检决定.
- 多参数核磁共振技术为改善这些模两可的病变的特征提供了潜力.
研究的目的:
- 验证胺质子转移权重MRI (APTw-MRI),扩散曲解成像 (DKI) 和明显扩散系数 (ADC) 在增强PI-RADS 3-4前列腺癌活检决策方面的性能.
- 评估单个和组合的多参数定量序列的诊断准确性.
- 确定这些技术的能力,以减少不必要的活检,同时最大限度地减少遗漏的临床上显著的前列腺癌 (csPCa).
主要方法:
- 96名PI-RADS 3-4分数的患者接受了MRI,随后病理确认.
- 提取了包括APT,ADC,平均扩散率 (MD) 和平均度 (MK) 在内的定量MRI参数.
- 后勤回归和接收器操作特征 (ROC) 分析被用于评估诊断性能和比较模型,包括计算特异性和灵敏度.
主要成果:
- 个别参数显示,csPCa检测的诊断性能中等 (AUC从0.610到0.730不等).
- 一个结合APTw-MRI,DKI和ADC的新型组合模型实现了显著更高的AUC0.851 (P <0.05).
- 综合模型表明,避免不必要的活检和检测csPCa之间的优越权衡,Youden指数为0.615.
结论:
- 结合APTw-MRI,DKI和ADC的新型诊断模型为PI-RADS 3-4前列腺病变的活检决策提供了增量价值.
- 这种多参数方法增强了活检必要性的分层,潜在地优化了患者管理.
- 这些发现支持使用这种联合MRI技术来提高诊断准确性并减少不必要的侵入性手术.
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