Readout-segmented echo-planar imaging in diffusion-weighted mr imaging in breast cancer: comparison with single-shot echo-planar imaging in image quality.
Readout-segmented echo-planar imaging in diffusion-weighted mr imaging in breast cancer: comparison with single-shot echo-planar imaging in image quality.
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DOI：
10.3348/kjr.2014.15.4.403
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发表时间：
2014-07
影响因子：
4.8
通讯作者：
Song BJ
中科院分区：
文献类型：
--
作者：
Kim YJ;Kim SH;Kang BJ;Park CS;Kim HS;Son YH;Porter DA;Song BJ
本研究的目的是比较标准单次激发回波平面成像(ss-EPI)和读出分段回波平面成像(rS-EPI)在乳腺癌患者中的图像质量。对71例74例乳腺癌患者同时行SS-EPI和RS-EPI检查。为了定性比较图像质量，三位读者独立评估了两组扩散加权(DW)图像。为了评估几何失真，比较对比增强MR(CE-MR)图像和相应DW图像获得的病变长度。为了评估图像参数，计算了信噪比(SNR)、病变对比度和对比噪声比(CNR)。在定性图像质量方面，RS-EPI在大多数指标上优于SS-EPI。在RS-EPI中，解剖结构的区分、病变的勾画、鬼影伪影和整体图像质量明显更好。在几何失真方面，ss-EPI和CE-MR的病变长度有显著差异，而CE-MR和RS-EPI的病变长度无显著差异。在SNR和CNR方面，rS-EPI优于ss-EPI。在乳腺DW磁共振成像中，读出分段EPI在图像质量方面优于ss-EPI。
The purpose of this study was to compare the image quality of standard single-shot echo-planar imaging (ss-EPI) and that of readout-segmented EPI (rs-EPI) in patients with breast cancer. Seventy-one patients with 74 breast cancers underwent both ss-EPI and rs-EPI. For qualitative comparison of image quality, three readers independently assessed the two sets of diffusion-weighted (DW) images. To evaluate geometric distortion, a comparison was made between lesion lengths derived from contrast enhanced MR (CE-MR) images and those obtained from the corresponding DW images. For assessment of image parameters, signal-to-noise ratio (SNR), lesion contrast, and contrast-to-noise ratio (CNR) were calculated. The rs-EPI was superior to ss-EPI in most criteria regarding the qualitative image quality. Anatomical structure distinction, delineation of the lesion, ghosting artifact, and overall image quality were significantly better in rs-EPI. Regarding the geometric distortion, lesion length on ss-EPI was significantly different from that of CE-MR, whereas there were no significant differences between CE-MR and rs-EPI. The rs-EPI was superior to ss-EPI in SNR and CNR. Readout-segmented EPI is superior to ss-EPI in the aspect of image quality in DW MR imaging of the breast.
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在小儿大脑中进行扩散加权成像的读取 - 回声 - 平面成像的临床应用。
DOI：
10.3174/ajnr.a2481
发表时间：
2011-08
期刊：
AJNR. American journal of neuroradiology
影响因子：
--
作者：
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通讯作者：
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影响因子：
120.7
作者：
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通讯作者：
Schnall, MD
影响因子：
1.3
作者：
Morelli, John;Porter, David;Runge, Val
通讯作者：
Runge, Val
影响因子：
19.7
作者：
Bogner, Wolfgang;Pinker-Domenig, Katja;Gruber, Stephan
通讯作者：
Gruber, Stephan
影响因子：
3.3
作者：
Miller, KL;Pauly, JM
通讯作者：
Pauly, JM