Fat tissue and fat suppression
| Autor: | J.J. Steinbach, Anthony A. Mancuso, Hong Yan, Jintong Mao, W.D. Bidgood, William W. Brey |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Magnetic Resonance Spectroscopy
medicine.diagnostic_test Pulse (signal processing) Chemistry Swine Biomedical Engineering Biophysics Fat suppression Adipose tissue Magnetic resonance imaging Selective excitation Signal Magnetic Resonance Imaging Nuclear magnetic resonance Adipose Tissue Phase imaging medicine Spin echo Animals Radiology Nuclear Medicine and imaging |
| Zdroj: | Magnetic resonance imaging. 11(3) |
| ISSN: | 0730-725X |
| Popis: | Fat tissues consist of fat cells, capillaries, and collagen fibers. In order to completely suppress the signals from fat tissues in clinical magnetic resonance imaging, the signal from capillaries and collagen fibers as well as from fat cells should all be suppressed. We have previously reported that fat signal can be uniformly suppressed by applying an optimized presaturation pulse. The inhomogeneously broadened fat peak of tissue spectrum is excited by the optimized pulse and dephased by a subsequent field gradient. The broadened water peak is not affected. In this paper we discuss a technique that suppresses signals from fat tissues completely as well as uniformly. This technique is based on the cancellation of fat and water signals in the same image voxel by combining the optimized selective excitation with the opposite phase imaging technique. Experimental and clinical images demonstrate that the new technique improves the delineation and depiction of anatomy in clinical fat suppression imaging. |
| Databáze: | OpenAIRE |
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