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Effectiveness of a fast spin echo technique using the signal void in acquisition of black blood images

흑혈류영상 획득 시 신호소실을 활용한 고속스핀에코기법의 유용성

  • Choi, Kwan-Woo (Department of Health Science, Graduate School Hanyang University) ;
  • Kim, Yoon-Shin (Department of Health Science, Graduate School Hanyang University) ;
  • Son, Soon-Yong (Department of Radiology, Asan Medical Center) ;
  • Lee, Hee-Ju (Department of Radiology, Asan Medical Center) ;
  • Min, Jung-Whan (Department of Radiology, Shin-Gu University) ;
  • Lee, Jong-Seok (Department of Radiotechnology, Wonkwang Health Science University) ;
  • Yoo, Beong-Gyu (Department of Radiotechnology, Wonkwang Health Science University)
  • 최관우 (한양대학교 대학원 보건학과) ;
  • 김윤신 (한양대학교 대학원 보건학과) ;
  • 손순룡 (서울아산병원 영상의학과) ;
  • 이희주 (서울아산병원 영상의학과) ;
  • 민정환 (신구대학교 방사선과) ;
  • 이종석 (원광보건대학교 방사선과) ;
  • 유병규 (원광보건대학교 방사선과)
  • Received : 2013.06.24
  • Accepted : 2013.09.06
  • Published : 2013.09.30

Abstract

The purpose of our study is to shorten the scanning time and minimize the inconveniences of the patients in acquisition of the black blood images using the signal void effect in the fast spin echo technique while keeping the diagnostic value of the test. Thirty-two consecutive patients who underwent black blood MR imaging were examed with additional double inversion recovery (DIR) sequence and the conventional fast spin echo (FSE) sequence. Signal to Noise Ratio (SNR) and Contrast to Noise Ratio (CNR) of the internal carotid arteries' lumen were compared in T1 and T2 weighted images to determine whether there are differences between the two techniques for depiction of the signal void effect inside the vessel wall. The FSE images showed lower SNR values than the DIR images in both of the T1 and T2 weighted images (11.49% and 13.66% respectively). While the CNR values were higher in the FSE images than in the DIR images in both of the T1 and T2 weighted images (8.69% and 7.55% respectively).There was no significant difference between the two techniques for either of the SNR or CNR (p>0.05, p>0.05 respectively). The DIR and the FSE images demonstrated almost identical imaging patterns. Therefore, it is anticipated that the use of FSE technique in acquisition of the black blood imaging could reduce the inconveniences of the patients during the scanning and minimize exam time while keeping the diagnostic value of the test.

Keywords

Atherosclerosis;Black blood imaging;Double inversion recovery;Turbo spin echo;ICA;SNR;CNR

Acknowledgement

Supported by : 원광보건대학교

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