Readout-Segmented Echo-Planar Imaging in Diffusion-Weighted MR Imaging in Breast Cancer: Comparison with Single-Shot Echo-Planar Imaging in Image Quality.
10.3348/kjr.2014.15.4.403
- Author:
Yun Ju KIM
1
;
Sung Hun KIM
;
Bong Joo KANG
;
Chang Suk PARK
;
Hyeon Sook KIM
;
Yo Han SON
;
David Andrew PORTER
;
Byung Joo SONG
Author Information
1. Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea. rad-ksh@catholic.ac.kr
- Publication Type:Original Article ; Comparative Study ; Research Support, Non-U.S. Gov't
- Keywords:
Breast neoplasm;
Magnetic resonance imaging;
Diffusion-weighted MRI
- MeSH:
Adult;
Aged;
Aged, 80 and over;
Artifacts;
Breast/pathology;
Breast Neoplasms/pathology;
Contrast Media/diagnostic use;
Diffusion Magnetic Resonance Imaging/methods/*standards;
Echo-Planar Imaging/methods/*standards;
Female;
Humans;
Image Enhancement/methods/*standards;
Middle Aged;
Observer Variation;
Retrospective Studies;
Sensitivity and Specificity;
Signal-To-Noise Ratio
- From:Korean Journal of Radiology
2014;15(4):403-410
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: 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. MATERIALS AND METHODS: 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. RESULTS: 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. CONCLUSION: Readout-segmented EPI is superior to ss-EPI in the aspect of image quality in DW MR imaging of the breast.
