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Scanning parameters optimization of MSDE sequence for intracranial vascular wall imaging
LI Ximao  TAO Li  CAI Yan  GONG Qihui  LÜ Fajin 

Cite this article as: Li XM, Tao L, Cai Y, et al. Scanning parameters optimization of MSDE sequence for intracranial vascular wall imaging[J]. Chin J Magn Reson Imaging, 2022, 13(7): 112-115, 125. DOI:10.12015/issn.1674-8034.2022.07.020.


[Abstract] Objective To investigate the effect of motion-sensitized driven-equilibrium (MSDE) sequence on the image quality of intracranial vessel wall magnetic resonance imaging.Materials and Methods Sixty-five subjects were randomly selected for brain MRI using MSDE sequence before and after optimization. The overall image, lumen and wall image quality of main intracranial artery segments were evaluated subjectively, and the signal to noise ratio (SNR) and contrast to noise ratio (CNR) of white matter, gray matter and cerebrospinal fluid were measured objectively before and after optimization. The differences between the two groups of images before and after optimization were compared.Results The scanning time of MSDE sequence is shortened from 4 min 4 s to 2 min 29 s after parameter optimization. SNR and CNR values of white matter, gray matter and cerebrospinal fluid after optimization were higher than those before optimization with significant differences (P＜0.05). Overall image quality, right vertebral artery V4 segment, basilar artery, right internal carotid artery C1 segment, bilateral internal carotid artery C4 segment, bilateral posterior cerebral artery P2 segment after optimization was better than that before optimization with significant difference (P＜0.05).Conclusions The MSDE sequence with optimized parameters can significantly shorten the scanning time, improve the image quality and clearly display the intracranial vascular wall, which meets the diagnostic requirements.
[Keywords] magnetic resonance imaging；motion-sensitized driven-equilibrium；parameter optimization；intracranial vascular wall；black blood imaging；image quality

LI Ximao   TAO Li   CAI Yan   GONG Qihui   LÜ Fajin*  

Department of Radiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China

Lü FJ, E-mail: fajinlv@163.com

Conflicts of interest   None.

Received  2022-04-12
Accepted  2022-06-22
DOI: 10.12015/issn.1674-8034.2022.07.020
Cite this article as: Li XM, Tao L, Cai Y, et al. Scanning parameters optimization of MSDE sequence for intracranial vascular wall imaging[J]. Chin J Magn Reson Imaging, 2022, 13(7): 112-115, 125. DOI:10.12015/issn.1674-8034.2022.07.020.

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