自由呼吸与屏气弥散加权成像在腹部实性脏器运用的差异分析
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四川省卫生和计划生育委员会科研课题(140107)


Comparison of free breathing and breath hold diffusion weighted imaging technologies for solid organs in the abdomen
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    摘要:

    【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。

    Abstract:

    【Abstract】 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 parenchymal 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 increases SNR. It is worthy of clinical popularization.

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  • 在线发布日期: 2018-04-18
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