IR@PKUHSC  > 北京大学第一临床医学院  > 放射治疗科
学科主题临床医学
Relaxation enhanced compressed sensing three-dimensional black-blood vessel wall MR imaging: Preliminary studies
Li, Bo1; Li, Hao2; Li, Jun3; Zhang, Yuchen4; Wang, Xiaoying2,5; Zhang, Jue1,2; Dong, Li3; Fang, Jing1,2
关键词Compressed sensing Three dimensional black-blood imaging RECS-3D MERGE Pseudo-centric phase encoding order Vessel wall imaging
刊名MAGNETIC RESONANCE IMAGING
2015-09-01
DOI10.1016/j.mri.2015.03.009
33期:7页:932-938
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]ATHEROSCLEROTIC PLAQUE COMPONENTS ; STATE FREE PRECESSION ; SPIN-ECHO TSE ; MAGNETIC-RESONANCE ; THORACIC AORTA ; RECONSTRUCTION ; SEQUENCE ; CORONARY ; 3T
英文摘要

Objective: In this study, we sought to investigate the feasibility of a new technique termed relaxation enhanced compressed sensing three-dimensional motion-sensitizing driven equilibrium prepared 3D rapid gradient echo sequence (RECS-3D MERGE).

Materials and methods: The RECS-3D MERGE sequence consisted of a 3D MERGE sequence for imaging, a period of delay time (TD) for relaxation enhancement, and a pseudo-centric phase encoding order used for under-sampling acquisition to maintain scan efficiency. Seven healthy volunteers and six patients with 40% to 75% carotid artery stenosis were recruited in this study. Healthy subjects underwent 3D MERGE, RECS-3D MERGE and two-dimensional (2D) TI-weighted double inversion recovery fast spin echo (T1W DIR-FSE) scans. The signal ratio (SR) values of 21 RECS-3D MERGE scans were compared in order to determine the optimal scan parameter set of acceleration factor (AF) and delay time (TD) for RECS-3D MERGE sequence. Patients then underwent 3D MERGE, RECS-3D MERGE using the aforementioned optimal scan parameter set and 2D T1W DIR-FSE scans. Two radiologists, blinded to the imaging technique, qualitatively graded each image on a six-point ordinal scale.

Results: The highest value of SR occurred with the scan parameter set of 3-fold AF and 800 ms TD. Compared to 3D MERGE, RECS-3D MERGE with the parameter set significantly improved the image quality for both healthy subjects and patients experiments, while the scan efficiency was not sacrificed. And no significant differences were observed in the subjective scores of RECS-3D MERGE and 2D T1W DIR-FSE image qualities.

Conclusion: RECS-3D MERGE technique achieved significant improvement in black-blood image quality compared with 3D MERGE. And the image quality of this 3D rapid carotid black-blood imaging technique is comparable to 2D T1W DIR-FSE while it has much higher scan efficiency. (C) 2015 Elsevier Inc. All rights reserved.

语种英语
WOS记录号WOS:000356561500009
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/58701
专题北京大学第一临床医学院_放射治疗科
作者单位1.Peking Univ, Coll Engn, Beijing 100871, Peoples R China
2.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
3.Capital Med Univ, Beijing Anzhen Hosp, Dept Radiol, Beijing 100029, Peoples R China
4.Capital Med Univ, Beijing Anzhen Hosp, Dept Cardiol, Beijing 100029, Peoples R China
5.Peking Univ, Hosp 1, Dept Radiol, Beijing 100051, Peoples R China
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GB/T 7714
Li, Bo,Li, Hao,Li, Jun,et al. Relaxation enhanced compressed sensing three-dimensional black-blood vessel wall MR imaging: Preliminary studies[J]. MAGNETIC RESONANCE IMAGING,2015,33(7):932-938.
APA Li, Bo.,Li, Hao.,Li, Jun.,Zhang, Yuchen.,Wang, Xiaoying.,...&Fang, Jing.(2015).Relaxation enhanced compressed sensing three-dimensional black-blood vessel wall MR imaging: Preliminary studies.MAGNETIC RESONANCE IMAGING,33(7),932-938.
MLA Li, Bo,et al."Relaxation enhanced compressed sensing three-dimensional black-blood vessel wall MR imaging: Preliminary studies".MAGNETIC RESONANCE IMAGING 33.7(2015):932-938.
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