螺旋MRA在烟雾病中的血管可视化和加速图像采集:与笛卡尔MRA的比较研究。

IF 1.8 4区 医学 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Maoxue Wang, Yongbo Yang, Yujie Yu, Chuyue Chen, Kun Wang, Mahmud Mossa-Basha, Baochen Chu, Pin Lv, Mei Yao, Wen Zhang, Xin Zhang, Zhengyang Zhu, Xiance Zhao, Lei Zhou, Bing Zhang
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引用次数: 0

摘要

目的:以数字减影血管造影(DSA)为参考标准,比较螺旋MRA (MRAspiral)和压缩SENSE加速笛卡尔MRA (MRACS)在烟雾病(MMD)患者中的血管显示效果。方法:前瞻性采集不同获取窗期(τ = 4、6、10 ms)的mrspiral、MRACS和DSA。测定各序列大脑中动脉(MCA) M1、M2、M3、M4段的噪比(CNR)。与DSA相比,使用3点和4点likert量表定性分析远端MCA、小脑膜动脉(LMA)侧支、远端颈外动脉(ECA)和内颈动脉(ICA)狭窄闭塞的血管可视化。采用线性固定效应模型来确定四个序列之间的差异。结果:共纳入55例烟雾病患者的98个大脑半球。M2、M3和M4段的CNR在MRACS与mrraτ 4或mrraτ 6之间无显著差异,但在MRACS中明显高于mrraτ 10 (M2: P)。结论:MRAspiral为烟雾病患者提供了更好的远端动脉血管显示,具有足够的图像质量。与MRACS相比,当τ值设置为6 ms时,MRAspiral可以将扫描时间缩短32.31%,同时提供更好的图像质量。知识进展:螺旋MRA扫描时间较短,在烟雾病侧支血管显像方面表现良好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhanced blood vessel visualization and accelerated image acquisition using spiral magnetic resonance angiography in moyamoya disease: a comparative study with Cartesian magnetic resonance angiograhy.

Objectives: To compare the blood vessel visualization with spiral MRA (MRAspiral) and compressed SENSE accelerated Cartesian MRA (MRACS) in moyamoya disease (MMD) patients, with digital subtraction angiography (DSA) as the reference standard.

Methods: We prospectively collected MRAspiral with different acquisition windows (τ = 4, 6, 10 ms), MRACS, and DSA in MMD patients. Contrast-to-noise ratio (CNR) was measured in the M1, M2, M3, and M4 segments of the middle cerebral artery (MCA) for each MRA sequence. Vessel visualization of the distal MCA, leptomeningeal artery (LMA) collaterals, distal external carotid artery (ECA), and internal carotid artery (ICA) steno-occlusion was qualitatively analysed using three- and four-point Likert scales compared to DSA. A linear fixed-effects model was used to determine differences among the 4 sequences.

Results: A total of 98 hemispheres from 55 MMD patients were included. CNR in the M2, M3, and M4 segments of the MCA was not significantly different between MRACS and MRAτ4 or MRAτ6, but it was significantly higher in MRACS than MRAτ10 (M2: P < .001, M3: P < .001, M4: P = .013). MRAspiral sequences provided better visualization of the distal MCA, LMA collaterals, and distal ECA compared to MRACS (all P < .001).

Conclusions: MRAspiral offers improved vessel visualization in distal arteries with adequate image quality for patients with MMD. Compared to MRACS, MRAspiral can reduce scan time by 32.31% when the τ value is set to 6 ms, while also providing superior image quality.

Advances in knowledge: Spiral MRA performs well in visualizing collateral vessels in moyamoya disease with shorter scan time.

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来源期刊
British Journal of Radiology
British Journal of Radiology 医学-核医学
CiteScore
5.30
自引率
3.80%
发文量
330
审稿时长
2-4 weeks
期刊介绍: BJR is the international research journal of the British Institute of Radiology and is the oldest scientific journal in the field of radiology and related sciences. Dating back to 1896, BJR’s history is radiology’s history, and the journal has featured some landmark papers such as the first description of Computed Tomography "Computerized transverse axial tomography" by Godfrey Hounsfield in 1973. A valuable historical resource, the complete BJR archive has been digitized from 1896. Quick Facts: - 2015 Impact Factor – 1.840 - Receipt to first decision – average of 6 weeks - Acceptance to online publication – average of 3 weeks - ISSN: 0007-1285 - eISSN: 1748-880X Open Access option
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