精准频率反转恢复及水激发两种压脂方式在乳腺iShim-IVIM成像中的对比

Comparison analysis of WE and SPAIR technology on breast iShim-IVIM imaging

目的探讨精准频率反转恢复(SPAIR)和水激发(WE)两种压脂技术在乳腺iShim-IVIM成像中的优缺点。方法随机选取20例乳腺肿物患者,分别使用SPAIR技术和WE技术对乳腺行iShim-IVIM扫描及DCE-MRI扫描,计算SPAIR-iShim和WE-iShim图像的SNR值、CNR值及ADC值,并对图像质量进行主观评分,然后进行统计学对比分析。结果采用WE技术图像的SNR值及CNR值均显著高于SPAIR技术(均P<0.05)。采用WE技术与SPAIR技术的图像主观评分差异无统计学意义(P>0.05)。采用WE技术与SPAIR技术图像肿物中心区域ADC值差异无统计学意义(P>0.05)。结论在iShim-IVIM成像中采用WE压脂技术较SPAIR压脂技术图像质量明显提高,但SPAIR技术与WE技术均可满足诊断的需求,且ADC值无明显差异。

Objective To investigate the strengths and weaknesses of SPAIR and WE in iShim-IVIM of breast gland MRI scanning. Methods Twenty patients with breast tumor underwent iShim-IVIM and DCE-MRI scanning by SPAIR and WE technology. SNR, CNR and ADC of the SPAIR-iShim and WE-iShim imaging were calculated and imaging quality were evaluated. Statistical analysis was done afterwards. Results The SNR and CNR of WE technology is higher than those of SPAIR statistically （P〈 0.05）. There is no significant statistical difference in score of the images between SPAIR and WE （P〉0.05）. The ADC of the center of the tumor has no significant statistical difference between SPAIR and WE （P〉0.05）. Conclusion The quality of the images using WE is significantly improved than SPAIR, but both of them can meet the diagnostic requirements, and the ADC has no statistical difference as well.