同时多层成像技术用于弥散张量成像评估脑胶质瘤  

Simultaneous multi-slice technique applicated in diffusion tensor imaging for evaluating brain glioma

作　　者：何雅坤[1] 陈晓煜 易思琪 胡云涛 兰美 陈佳 任静[1] 周鹏[1] 邓和平[1] HE Yakun;CHEN Xiaoyu;YI Siqi;HU Yuntao;LAN Mei;CHEN Jia;REN Jing;ZHOU Peng;DENG Heping(Department of Radiology,Sichuan Cancer Hospital,Chengdu 610041,China;Department of Radiotherapy,Sichuan Cancer Hospital,Chengdu 610041,China;United Imaging Healthcare,Shanghai 201807,China)

机构地区：[1]四川省肿瘤医院影像科,四川成都610041 [2]四川省肿瘤医院放疗科,四川成都610041 [3]上海联影医疗科技股份有限公司,上海201807

出　　处：《中国介入影像与治疗学》2024年第8期495-498,共4页Chinese Journal of Interventional Imaging and Therapy

摘　　要：目的探讨同时多层成像(SMS)技术用于弥散张量成像(DTI)评估脑胶质瘤的价值。方法前瞻性对34例脑胶质瘤患者采集颅脑常规DTI及SMS-DTI,对比2种图像质量主观评分、信噪比(SNR)及对比度信噪比(CNR),以及基于2种图像所获全脑纤维束数及肿瘤相对各向异性分数(rFA)和平均扩散率(rMD)。结果34例中,23例为高级别、11例为低级别胶质瘤。SMS-DTI整体图像质量、显示肿瘤边缘清晰度和磁敏感伪影主观评分与常规DTI差异均无统计学意义(P均>0.05),而其SNR、CNR均低于常规DTI(P均<0.05);基于SMS-DTI所获不同病理分级脑胶质瘤患者全脑纤维束数及肿瘤rFA和rMD与常规DTI差异均无统计学意义(P均>0.05)。结论SMS技术用于DTI评估脑胶质瘤可在保证图像质量及定量分析结果准确性的前提下有效缩短采集时间。Objective To explore the application value of simultaneous multi-slice(SMS)technique in diffusion tensor imaging(DTI)for evaluating brain glioma.Methods Thirty-four brain glioma patients were prospectively enrolled,and brain conventional DTI and SMS-DTI were acquired.The subjective scores of image quality,signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were compared between SMS-DTI and conventional DTI,so were the numbers of whole brain fiber bundles,tumor relative fractional anisotropy(rFA)and relative mean diffusivity(rMD)obtained based on SMS-DTI and conventional DTI.Results Among 34 patients,there were 23 cases of high-grade glioma and 11 cases of low-grade glioma.No significant difference of subjective scores of image quality,tumor edge clarity nor magnetic susceptibility artifacts was found between SMS-DTI and conventional DTI(all P>0.05).SNR and CNR on SMS-DTI were both lower than those on conventional DTI(both P<0.05).No significant difference of the numbers of whole brain fiber bundles,rFA nor rMD of gliomas with different pathological grades was detected based on SMS-DTI compared with those on conventional DTI(all P>0.05).Conclusion SMS applicated in DTI for evaluating brain gliomas was able to shorten acquisition time under the condition of ensuring image quality and quantitative analysis accuracy.

关 键 词：脑肿瘤 弥散磁共振成像 同时多层成像 前瞻性研究 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]