摘要
目的比较自由呼吸(FB)与屏气(BH)弥散加权成像(DWI)在腹部实性脏器运用中的差异。方法纳入128名接受腹部MRI检查的患者,均接受FB--DWI和BH-DWI序列扫描,测定正常腹部实性脏器(肝脏、胰腺、脾脏和肾脏)的表观扩散系数(ADC)和信噪比(SNR)值。结果腹部实性脏器的ADC值在FB--DWI和BH-DWI序列之间比较差异无统计学意义(P>0.05),而其SNR在两序列之间差异具有统计学意义,且FB-DWI比BH-DWI序列的SNR高(P<0.001)。结论 FB-DWI不仅对腹部实性脏器ADC值的测量无影响,而且能降低图像噪声并能提高信噪比,可在临床推广应用。
Objective To compare free-breathing （FB） and breath-hold （BH） diffusion weighted imaging （DWI） technologies for solid organs in the abdomen. Methods 128 patients underwent FB-DWI and BH-DWI examinations were enrolled. The apparent diffusion coefficient （ADC） values of normal abdominal parenehymal organs （liver, pancreas, spleen, and renal） and signal-to-noise ratio （SNR） values in the same patients were measured. Results No statistically significant differences were identified in ADC values of the abdominal organs between FB-DWI and BH-DWI （P〉0.05）. However, there were statistically significant differences between SNR values of the organs on FB-DWI and BH-DWI sequences,and SNRs were found to be better on FB-DWI than BH-DWI sequences （P〈0. 001）. Conclusion FH-DWI not only has no influence on the ADC values measurements of abdominal parenchymal organs, but reduces image noise and in- creases SNR. It is worthy of clinical popularization.
作者
吴镭
赵林伟
陈少贤
杨国庆
付泉水
范小萍
胡纳
严高武
WU Lei1 , ZHAO Linwei1 , CHEN Shaoxian2 , YANG Guoqing1 , FU Quanshui1, FAN Xiaoping1 , HU Na1 , YAN Gaowu1(1. Department of Radiology, Suining Central Hospital, Suining 629000, Sichuan, China; 2. Department of Radiology, The Fifth People＇s Hospital of Nanchong City, Nanehong 637100, Sichuan, Chin)
出处
《西部医学》
2018年第4期599-602,共4页
Medical Journal of West China
基金
四川省卫生和计划生育委员会科研课题(140107)
关键词
腹部
弥散加权成像
磁共振成像
表观弥散系数
信噪比
Abdomen
Diffusion weighted imaging
Magnetic resonance imaging
Apparent diffusion coefficient
Signal-to-noise ratio
