Jun Isogai1, Mitsue Miyazaki2, Takeshi Shimada1, Hideo Hatakeyama1, Takashi Yamada1, Tomoko Miyata3, Kenji Yodo3, Ken Kudou3
1Radiology, Hasuda Hospital, Hasuda, Saitama, Japan; 2Toshiba Medical Research Institute USA, United States; 3Toshiba Medical Systems Corp., Japan
Visualization of the subclavian arterial branches is quite difficult using conventional nonenhanced time-of-flight MR angiography due to the tortuous arterial trees and small vessels. Gadolinium-enhanced MRA also has several problems with injection rates, the amount of contrast material, and venous superimposition. Due to the recent concerns of Gadolinium-related Nephrogenic Systemic Fibrosis (NSF), nonenhanced MRA solutions have gained interest. Visualization of small arteries of the subclavian arterial branches was investigated using 3D half-Fourier FSE images combined with time-spatial labeling inversion pulse (time-SLIP).