期刊
RADIOLOGY
卷 221, 期 3, 页码 827-836出版社
RADIOLOGICAL SOC NORTH AMERICA
DOI: 10.1148/radiol.2213010455
关键词
heart, MR; magnetic resonance (MR), cine study; magnetic resonance (MR), image processing; magnetic resonance (MR), technology
资金
- NCI NIH HHS [R33-CA88144-01, 1R01 CA81431-01A1] Funding Source: Medline
The authors developed and evaluated two cine magnetic resonance (MR) imaging sequences with a radial rather than a rectilinear k-space coordinate frame: segmented k space and realtime true fast imaging with steady-state precession, or FISP. The two radial k-space segmentation (or view sharing) techniques, which were interleaved or continuous, were compared, and the feasibility of their application in cardiac cine MR imaging was explored in phantom and volunteer studies. Images obtained with the radial sequences were compared with those obtained With two-dimensional Fourier transform, or 2DFT, sequences currently used in cine MR imaging. Temporal resolution of 55 msec was achieved with the real-time radial sequences, which allowed acquisition of almost 19 high-quality images per second.
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