Gadolinium-Enhanced Three-dimensional MR Angiography Using Spectral Selective Inversion Pulse

Abstract

Contrast MRA obtained through the combined use of the spectral selective inversion pulse and enhanced three-dimensional fast spoiled gradient echo method was examined for imaging conditions. The results of simulation revealed the highest blood signal value at an FA of 30 degrees. The signal intensity of fat with the combined use of the spectral selective inversion pulse and three-dimensional fast spoiled gradient echo method were shown to very with TI and the FA of the enhanced three-dimensional fast spoiled gradient echo method. The bounce point for fat became shorter as FA increased, and it was prolonged for smaller FA. It is important with the present method to adjust TI such that a fat suppressant effect is obtained after setting an FA that will provide the highest blood signal value. The optimization of FA and TI led to good MRA performance with a clinically significant decrease in the fat signal.