Projection reconstruction balanced fast field echo for interactive real-time cardiac imaging

被引:34
作者
Schaeffter, T [1 ]
Weiss, S [1 ]
Eggers, H [1 ]
Rasche, V [1 ]
机构
[1] Philips Res Labs, Res Sector Tech Syst, D-22335 Hamburg, Germany
关键词
cardiac MRI; fluoroscopy; projection reconstruction; balanced FFE; true FISP;
D O I
10.1002/mrm.1322
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
A balanced fast field echo (FFE) sequence (also referred to as true fast imaging with steady precession (true FISP)), based on projection reconstruction (PR) is evaluated in combination with real-time reconstruction and interactive scanning capabilities for cardiac function studies. Cardiac image sequences obtained with the balanced PR-FFE method are compared with images obtained with a spin-warp (2D Fourier transform (2DFT)) technique. In particular, the representation of motion artifacts in both techniques is investigated. Balanced PR-FFE provides a similar contrast to spin-warp-related techniques, but is less sensitive to motion artifacts. The use of angular undersampling within balanced PR-FFE is examined as a means to increase temporal resolution while causing only minor artifacts. Furthermore, a modification of the profile order allows the reconstruction of PR images at different spatial and temporal resolution levels from the same data. This study shows that balanced PR-FFE is a robust tool for cardiac function studies. (C) 2001 Wiley-Liss, Inc.
引用
收藏
页码:1238 / 1241
页数:4
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