磁敏感加权成像对脑转移瘤放疗后疗效评价  

Evaluation of Efficacy of Magnetic Sensitivity Weighted Imaging after Radiotherapy for Brain Metastases

作　　者：李姝毅[1] 何庄超 郑海军[1] 何玉成[1] 李四翠[1] LI Shu-yi;HE Zhuang-chao;ZHENG Hai-jun;HE Yu-cheng;LI Si-cui(Imaging Medical Center,the First People's Hospital of Chenzhou City,Chenzhou 423000,Hunan Province,China)

机构地区：[1]郴州市第一人民医院影像医学中心,湖南郴州423000

出　　处：《中国CT和MRI杂志》2025年第2期25-28,共4页Chinese Journal of CT and MRI

基　　金：郴州市第一人民医院科研项目(N2021-26)。

摘　　要：目的探讨磁敏感加权成像(SWI)对脑转移瘤放疗后疗效评价。方法选取2021年7月至2023年11月在本院行全脑放射治疗的脑转移瘤患者116例作为研究对象,所有患者均在放疗前1周和放疗后行颅脑MRI常规序列和SWI序列扫描,比较常规MRI扫描和SWI扫描对脑转移瘤放疗后疗效评价的应用价值。结果常规MRI扫描共检出267个病灶,SWI扫描共检出284个病灶;放疗后,病灶最大径、瘤内血管数目、肿瘤内敏感性信号强度(ITSS)评分低于放疗前(t=7.851;t=12.342;t=8.541,P<0.05);有效组病灶最大径、瘤内血管数目、ITSS评分低于无效组(t=3.258;t=3.459;t=4.130,P<0.05)。结论比于常规MRI检查,SWI可提高对脑转移瘤患者病灶和瘤内新生血管的检出率,且有利于对脑转移瘤患者放疗后疗效的评价。Objective To explore evaluation of efficacy of susceptibility weighted imaging(SWI)after radiotherapy for brain metastases.Methods A total of 116 patients with brain metastases undergoing whole brain radiotherapy in the hospital were enrolled as the research objects between July 2021 and November 2023.At 1 week before radiotherapy and after radiotherapy,all patients underwent brain routine MRI and SWI sequence scans.The application value of routine MRI scan and SWI scan in evaluating curative effect in brain metastasis after radiotherapy was compared.Results Routine MRI scan and SWI scan showed that there were 267 lesions and 284 lesions,respectively.After radiotherapy,the maximum diameter of lesions,number of intratumoral vessels and score of intratumoral susceptibility signal intensity(ITSS)were decreased(t=7.851;t=12.342;t=8.541,P<0.05),and which were lower in effective group than ineffective group(t=3.258;t=3.459;t=4.130,P<0.05).Conclusion Compared with routine MRI,SWI can improve detection rates of lesions and intratumoral neovascularization in patients with brain metastases,and which is beneficial to evaluate the curative effect in brain metastasis after radiotherapy.

关 键 词：脑转移瘤 放疗 磁共振磁敏感加权成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]