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http://dx.doi.org/10.7742/jksr.2016.10.4.279

The Study on Reduction of Image Distortion by using Single-Shot Turbo Spin Echo in Brain Stem Diffusion MRI  

Choi, Kwan-Woo (Department of Radiology, Asan Medical Center)
Lee, Ho-Beom (Department of Radiology, Asan Medical Center)
Na, Sa-Ra (Department of Radiology, Asan Medical Center)
Yoo, Beong-Gyu (Department of Radiotechnology, Wonkwang Health Science University)
Son, Soon-Yong (Department of Radiotechnology, Wonkwang Health Science University)
Publication Information
Journal of the Korean Society of Radiology / v.10, no.4, 2016 , pp. 279-284 More about this Journal
Abstract
Single-shot echo planar imaging(SS-EPI) is well established as high sensitivity for ischemic stroke. However, it is prone to susceptibility artifact in brain stem that diminish the image quality. single-shot turbo spin echo(SS-TSE) is a new DWI technique that can reduce susceptibility artifact. Thus, this research was conducted so as to reduce geometric distortion in brain stem by using single-shot turbo spin echo technique. Thirty patients without brain disease underwent diffusion MR on a 3T scanner with SS-EPI and SS-TSE. Obtained images with both sequences were analyzed for geometric distortion and error percentage as well. Image quality in terms of geometric distortion of SS-TSE were found to be significantly better than those for SS-EPI. And error percentage was considerably reduced for 2.4% of b0 image(from 11.1% to 8.7%), 1.2% of b1000 image(from 11.4% to 10.1%), respectively. In summary, diffusion MR using SS-TSE significantly reduce geometric distortion compared to SS-EPI in brain stem and may provide improved diagnostic performance.
Keywords
Distortion; Diffusion weighted image(DWI); Single-shot turbo spin echo(SS-TSE); Single-shot echo planar imaging(SS-EPI); Susceptibility;
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