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http://dx.doi.org/10.7742/jksr.2016.10.4.241

The Study on Signal to Noise Ratio of Single-Shot Turbo Spin Echo to Reduce Image Distortion in Brain Stem Diffusion MRI  

Koo, Nohyun (Department of Radiology, Asan Medical Center)
Lee, Hobeom (Department of Radiology, Asan Medical Center)
Choi, Kwanwoo (Department of Radiology, Asan Medical Center)
Son, Soonyong (Department of Radiotechnology, Wonkwang Health Science University)
Yoo, Beonggyu (Department of Radiotechnology, Wonkwang Health Science University)
Publication Information
Journal of the Korean Society of Radiology / v.10, no.4, 2016 , pp. 241-246 More about this Journal
Abstract
The purpose of this study was to investigate the problems of low signal-to-noise ratio(SNR) of single-shot turbo spin echo(SS-TSE) by quantifying numerically decreased signal to noise ratio. Thirty five patients without brain disease underwent diffusion MRI in 3T scanner from July to October in 2015. Single shot echo planar imaging(SS-EPI) which is conventionally used in MRI was taken to compared SS-TSE in SNR of medulla oblongata. As a result, SNR of SS-TSE diffusion(b0=$314.41{\pm}42.96$, b1000=$117.33{\pm}14.04$) is than SS-EPI diffusion(b0=$514.84{\pm}48.97$, b=$208.65{\pm}25.70$) lower in b=0 image(38.9%) and b=1,000 image(43.8%). Thus, diffusion MR using SS-EPI of MS-EPI should be taken for diagnosis of disease in brain stem due to decreased SNR of diffusion using SS-TSE.
Keywords
Diffusion weighted image; Single-shot turbo spin echo(SS-TSE); Single-shot echo planar imaging(SS-EPI); Signal to noise ratio; Brain stem;
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