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Abstract #1401

Non-Contrast MR Angiography of the Toes: Correlations with Age and Gender

Jun Isogai1, Mitsue Miyazaki2, Hideo Hatakeyama1, Takeshi Shimada1, 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 toe arteries is quite difficult using conventional nonenhanced MR angiography, such as time-of-flight due to the tortuous arterial trees and slow-velocity, especially in older female toes. Gadolinium-enhanced MRA also has several problems with injection rates, the amount of contrast material, and the separation of arteries from veins. Due to the recent concerns of Gadolinium-related Nephrogenic Systemic Fibrosis (NSF), nonenhanced MRA solutions have gained interest. Depiction of small arteries of the toes was investigated using time-spatial labeling inversion pulse (time-SLIP) in combination with a swap phase encode extended data (SPEED) acquisition.