分段读出EPI与单次激发EPI在乳腺癌弥散加权成像中的对照研究

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Abstract Objective To investigate the image quality different of readout segmented echo planar imaging (Rs-EPI) and single-shot echo planar imaging (Ss-EPI) diffusion weighted imaging (DWI) in patients with breast cancer. Methods Thirty-six patients with breast cancer performed MR scan in Beijing Friendship Hospital, Capital Medical University from March to August 2018 were retrospectively enrolled in this study. In all patients, Rs-EPI-DWI and Ss-EPI-DWI were performed. Two independent readers visually assessed lesion edge sharpness evaluation (ESE) and geometric distortion evaluation (GDE). Differences between two sequences were compared quantitatively by measuring the signal-to-noise ratio (SNR), contrast, contrast-to-noise ratio (CNR), and relative apparent diffusion coefficient (rADC). Results ESE, GDE, CNR, and rADC values showed a significant difference between Rs-EPI-DWI and Ss-EPI-DWI (P < 0.01). There was no statistically significant difference in SNR and contrast values between the two sequences (P > 0.05). Conclusion In breast cancer, Rs-EPI-DWI provids significantly higher image quality than Ss-EPI-DWI.

Key words： Diffusion-weighed imaging Breast cancer Magnetic resonance imaging Image quality Apparent diffusion coefficient Signal to noise ratio Contrast to noise ratio

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	GUAN Wei ZHANG Yi DENG Ligang HAN Dan LI Jing YANG Zhenghan WANG Zhenchang YIN Hongxia

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GUAN Wei ZHANG Yi DENG Ligang HAN Dan LI Jing YANG Zhenghan WANG Zhenchang YIN Hongxia. Comparison of readout segmented EPI and single-shot EPI diffusion weighted imaging in patients with breast cancer[J]. 中国医药导报, 2019, 16(19): 136-139.

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http://www.yiyaodaobao.com.cn/EN/ OR http://www.yiyaodaobao.com.cn/EN/Y2019/V16/I19/136

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