Optimal Plane Selection for Measuring Post-prandial Blood Flow Increase within the Superior Mesenteric Artery: Analysis Using 4D Flow and Computational Fluid Dynamics.
Optimal Plane Selection for Measuring Post-prandial Blood Flow Increase within the Superior Mesenteric Artery: Analysis Using 4D Flow and Computational Fluid Dynamics.
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DOI：
10.2463/mrms.mp.2019-0089
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发表时间：
2020-12-01
期刊：
影响因子：
--
通讯作者：
Kabasawa H
中科院分区：
文献类型：
--
作者：
Sugiyama M;Takehara Y;Kawate M;Ooishi N;Terada M;Isoda H;Sakahara H;Naganawa S;Johnson KM;Wieben O;Wakayama T;Nozaki A;Kabasawa H
2D电影相位对比（PC）-MRI是用于上级肠系膜动脉（SMA）的标准速度测量;然而，之前从未充分讨论过测量平面的最佳定位。本机构审查委员会批准的前瞻性单组研究旨在测试SMA的血流速度测定与2D电影PC-MRI和膳食激发的联合使用是否取决于测量平面的定位，并寻求最佳的流速测定截面。7名健康志愿者在餐前和餐后30分钟在3个测量平面（3 T下SMA的近端、弯曲中段和远端直段）接受心脏相位分辨ECG门控2D电影PC-MRI。在2D电影PC-MRI之后，还立即使用3D电影PC-MRI和极欠采样的各向同性投影成像（PC VIPR）进行了4D Flow，以使用流线分析描绘SMA内的血流动力学。两名放射科医生测量流速，并根据4D Flow和计算流体动力学（CFD）得出的流线对SMA中异常血流的外观进行评级。2D电影PC-MRI仅在近端（129.3 vs. 97.8，P = 0.0313）和远端节段（166.9 vs. 96.2，P = 0.0313）测量到进餐后时间平均流速（mm/s）增加，而在弯曲中段（113.1 vs. 85.5，P = 0.0625）未测量到。与其他部分相比，在餐前和餐后，远端直段的平均速度最高，其标准误差（8.5-26.5）最小。流线分析在4D Flow和CFD（κ：0.27-0.68）中描述了弯曲中段更频繁出现的垂直或螺旋流。使用2D电影PC-MRI的SMA速度测量取决于测量平面的定位。MR速度测量推荐使用远端直段，而不是弯曲中段。
2D cine phase contrast (PC)-MRI is a standard velocimetry for the superior mesenteric artery (SMA); however, the optimal localization of the measurement plane has never been fully discussed previously. The purpose of this Institutional Review Board approved prospective and single arm study is to test whether flow velocimetry of the SMA with combined use of 2D cine PC-MRI and meal challenge is dependent on the localizations of the measurement planes and to seek optimal section for velocimetry. Seven healthy volunteers underwent cardiac phase resolved ECG gated 2D cine PC-MRI pre- and 30 min post-meal challenge at three measurement planes: proximal, curved mid section and distal straight section of the SMA at 3T. 4D Flow using 3D cine PC-MRI with vastly undersampled isotropic projection imaging (PC VIPR) was also performed right after 2D cine PC-MRI to delineate the flow dynamics within the SMA using streamline analysis. Two radiologists measured flow velocities, and rated the appearances of the abnormal flow in the SMA on streamlines derived from the 4D Flow and the computational fluid dynamics (CFD). 2D cine PC-MRI measured increased temporally averaged flow velocity (mm/s) after the meal challenge only in the proximal (129.3 vs. 97.8, P = 0.0313) and distal section (166.9 vs. 96.2, P = 0.0313), not in the curved mid section (113.1 vs. 85.5, P = 0.0625). The average velocities were highest and their standard errors (8.5–26.5) were smallest at the distal straight section both before and after the meal challenge as compared with other sections. The streamline analysis depicted more frequent appearances of vertical or helical flow in the curved mid section both on 4D Flow and CFD (κ: 0.27–0.68). SMA velocimetry with 2D cine PC-MRI was dependent on the localization of the measurement planes. Distal straight section, not in the curved mid section is recommended for MR velocimetry.
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DOI：
10.1109/tvcg.2006.116
发表时间：
2006-09-01
影响因子：
5.2
作者：
Liu, Zhanping;Moorhead, Robert J., II;Groner, Joe
通讯作者：
Groner, Joe
影响因子：
3.5
作者：
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影响因子：
4.4
作者：
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Reeder, S. B.
影响因子：
2.3
作者：
Iwamoto, Yoichi;Inage, Akio;Yoo, Shi-Joon
通讯作者：
Yoo, Shi-Joon
影响因子：
4.4
作者：
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Ozono, Seiichiro