Comparison of fast spiral, echo planar, and fast low-angle shot MRI for cardiac volumetry at .5T
| Autor: | Frank Wiesmann, Peter D. Gatehouse, David N. Firmin, Jonathan R. Panting, Andrew M. Taylor, Dudley J. Pennell |
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| Rok vydání: | 1998 |
| Předmět: |
Adult
Male Time Factors Materials science Image quality ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Magnetic Resonance Imaging Cine Both ventricles Flash (photography) Image Processing Computer-Assisted Humans Radiology Nuclear Medicine and imaging Image resolution Spiral Observer Variation Echo-planar imaging Echo-Planar Imaging business.industry Reproducibility of Results Heart Magnetic Resonance Imaging Temporal resolution Feasibility Studies Female Nuclear medicine business Echo planar Biomedical engineering |
| Zdroj: | Journal of Magnetic Resonance Imaging. 8:1033-1039 |
| ISSN: | 1522-2586 1053-1807 |
| Popis: | The application of fast imaging is necessary to reduce the scanning time for cardiac volumetric MRI. Fast spiral, echo planar imaging (EPI), and fast low-angle shot (FLASH) imaging are rapid MRI techniques that allow image acquisition within a fraction of a second. Performed as a multi-shot technique, breath-hold imaging with high temporal and spatial resolution is feasible. This study evaluated the accuracy of interleaved spiral, EPI, and FLASH imaging for measuring ventricular volume and mass at .5T. Breath-hold short-axis cines in parallel planes covering both ventricles were acquired in 16 volunteers with all three fast methods, as well as with conventional gradient-echo imaging for comparison. All fast techniques showed good agreement with conventional imaging. Despite its lower temporal resolution, FLASH imaging yielded higher image quality than EPI and spiral, making FLASH more reliable and suggesting that at .5T, it is the method of choice for rapid cardiac volumetric imaging. |
| Databáze: | OpenAIRE |
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