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

发布时间：2018-01-06 00:20

本文关键词：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　出处：《实用医学杂志》2017年17期 　论文类型：期刊论文

更多相关文章： MRI IVIM成像 iShim序列 乳腺肿物

【摘要】：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P0.05)。采用WE技术与SPAIR技术的图像主观评分差异无统计学意义(P0.05)。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(P0.05)。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。
[Abstract]:Objective to investigate the advantages and disadvantages of accurate frequency inversion recovery (SPAIR) and water-induced lipid-pressing techniques in breast iShim-IVIM imaging. Methods Twenty patients with breast masses were randomly selected. The mammary gland was scanned by iShim-IVIM and DCE-MRI using SPAIR and we respectively. The SNR value and ADC value of SPAIR-iShim and WE-iShim images were calculated, and the image quality was evaluated subjectively. Results the SNR value and CNR value of the image using we technique were significantly higher than that of SPAIR technique (all P 0.05). There was no significant difference in image subjective score between we and SPAIR (P0.05). There was no significant difference in ADC value between we technique and SPAIR technique in the central region of tumor (P0.05). Conclusion the image quality of iShim-IVIM is improved obviously by using the technique of we pressing fat compared with that of the technique of SPAIR. However, SPAIR technique and we technique can meet the needs of diagnosis, and there is no significant difference in ADC value.
【作者单位】：滨州医学院附属医院放射科;滨州医学院附属医院超声医学科;
【基金】：山东省自然科学基金(编号:Y2008C140)
【分类号】：R445.2;R737.9
【正文快照】： 扩散加权成像(diffusion weighted imaging,DWI)联合动态增强扫描(dynamic contrast-enhanced,DCE)在乳腺癌筛查中对于提高病灶检出率具有明显的优势[1],其应用越来越广泛。体素内不相干运动(intravoxel incoherent motion,IVIM)成像利用双指数模型多b值DWI可用于评价病变水分

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