Sensitivity encoded cardiac MRI
Sensitivity encoded cardiac MRI
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DOI：
10.1081/jcmr-100000143
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发表时间：
2001-01-01
影响因子：
6.4
通讯作者：
Boesiger, P
中科院分区：
文献类型：
--
作者：
Pruessmann, KP;Weiger, M;Boesiger, P
成像速度是大多数心血管磁共振成像应用的关键因素。近年来，多线圈同步信号采集作为提高MRI扫描速度的一种手段受到越来越多的关注。在此基础上，灵敏度编码技术SENSE利用接收线圈灵敏度固有的空间编码效应，大大缩短了扫描时间。本工作研究了敏感性编码对心血管MRI的益处。SENSE应用于加速常见的屏气成像和实时成像，因子高达3.2。在具有ECG触发的屏气模式中，这种速度优势被用于缩短屏气间隔和提高空间分辨率。在没有触发和呼吸控制的心脏实时成像中，SENSE方法显著提高了时间分辨率，范围低至13 ms（77帧/秒）。心脏实时感知在几种模式下进行了演示，包括以每秒25三帧的速率对三个平行切片进行实时成像。
Imaging speed is a key factor in most cardiovascular applications of magnetic resonance imaging. Recently, simultaneous signal acquisition with multiple coils has received increasing attention as a means of enhancing scan speed in MRI. Based on this approach, the sensitivity encoding technique SENSE enables substantial scan time reduction by exploiting the inherent spatial encoding effect of receiver coil sensitivity.This work studies the benefit of sensitivity encoding for cardiovascular MRI. SENSE is applied to accelerate common breath-hold imaging as well as real-time imaging by factors up to 3.2. In the breath-hold mode with ECG triggering, this speed benefit has been used both for reducing the breath-hold interval and for improving spatial resolution. In cardiac real-time imaging without triggering and breath control, the SENSE approach has enabled significantly enhanced temporal resolution, ranging down to 13 ms (77 frame/s). Cardiac real-time SENSE is demonstrated in several modes, including real-time imaging of three parallel slices at a rate of 25 triple frames per second.