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

뇌줄기 확산강조 자기공명영상검사 시 뒤틀림을 줄이기 위한 SS-TSE 기법의 신호대잡음비 연구

Koo, Nohyun;Lee, Hobeom;Choi, Kwanwoo;Son, Soonyong;Yoo, Beonggyu
구노현;이호범;최관우;손순룡;유병규

  • Received : 2016.05.18
  • Accepted : 2016.06.30
  • Published : 2016.06.30

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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Acknowledgement

Supported by : 원광보건대학교