Spatial presaturation in real-time black-blood MRI improves endocardial border definition and reduces flow artifacts, enhancing cardiac and intravascular imaging.
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Hypothesis-generating for real-time black-blood cardiac MRI; leaves open human translation and validation.
A real-time interactive black-blood imaging system is described. Rapid blood suppression is achieved by exciting and dephasing slabs outside the imaging slice before each imaging excitation. Sharp-profiled radio frequency saturation pulses placed close to the imaging slice provide good blood suppression, even in views containing slow through-plane flow. In vivo results indicate that this technique improves endocardial border definition during systole in real-time cardiac wall-motion studies. Phantom and animal results indicate that this technique nearly eliminates flow artifacts in real-time intravascular studies. J. Magn. Reson. Imaging 2001;13:807-812.
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Nayak et al. (2001) studied this question.
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