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Comparison of multiplexed sensitivity encoding and single-shot echo-planar imaging for diffusion-weighted imaging of the liver

Authors
 Yeun-Yoon Kim  ;  Myeong-Jin Kim  ;  Sung-Min Gho  ;  Nieun Seo 
Citation
 EUROPEAN JOURNAL OF RADIOLOGY, Vol.132 : 109292, 2020-11 
Journal Title
 EUROPEAN JOURNAL OF RADIOLOGY 
ISSN
 0720-048X 
Issue Date
2020-11
Keywords
Artefacts ; Comparative study ; Diagnostic techniques and procedures ; Magnetic resonance imaging ; Signal-to-noise ratio
Abstract
Purpose: To compare multiplexed sensitivity encoding (MUSE) and conventional diffusion-weighted magnetic resonance imaging (cDWI) techniques in liver MRI. Methods: Fifty-nine patients who underwent both two-shot echo-planar DWI using MUSE and single-shot echo-planar cDWI at a 3.0-T MRI system were included. Qualitative parameters were independently evaluated by three radiologists, and quantitative parameters were calculated on the basis of region of interest measurements. Receiver operating characteristic curve analysis and McNemar's test were used to compare solid lesion characterization results and lesion detectability, respectively. Results: All reviewers found less image noise, sharper liver contours, milder susceptibility artifacts, and better lesion conspicuity in MUSE-DWI than in cDWI (reader average mean, 4.1-4.5 vs. 3.5-4.0; p < 0.05). The signal-to-noise ratio (SNR) of the liver was significantly higher in MUSE-DWI than in cDWI (right lobe: mean, 9.39 vs. 8.10, p < 0.001; left lobe: mean, 8.34 vs. 7.19, p < 0.001), while the SNR of the lesion (mean, 23.72 vs. 23.88, p = 0.911) and lesion-to-liver contrast-to-noise ratio (mean, 14.65 vs. 15.41, p = 0.527) were comparable between MUSE-DWI and cDWI. Solid lesion characterization results were comparably accurate between MUSE-DWI and cDWI (reader average area under the receiver operating characteristic curve, 0.985 vs. 0.986, p = 0.480). The detectability of lesions was better in MUSE-DWI than in cDWI (reader consensus, 83.7 % [41/49] vs. 67.3 % [33/49], p = 0.021). Conclusion: MUSE-DWI can provide multi-shot liver DWI with less noise, fewer distortions, improved SNR of the liver, and better lesion detectability.
Full Text
https://www.sciencedirect.com/science/article/pii/S0720048X20304812
DOI
10.1016/j.ejrad.2020.109292
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Myeong Jin(김명진) ORCID logo https://orcid.org/0000-0001-7949-5402
Kim, Yeun-Yoon(김연윤) ORCID logo https://orcid.org/0000-0003-2018-5332
Seo, Nieun(서니은) ORCID logo https://orcid.org/0000-0001-8745-6454
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/181495
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