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Infusion-tracking CE-MRA of the Lower Extremity Arteries
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鞠志国* 徐文坚# 刘吉华#
王 松# 李子祥#
* 宁波鑫高益医疗设备有限公司, 宁波 315400
# 青岛大学医学院附属医院影像中心，青岛266003
ABSTRACT
Objective: To study the method of infusion-tracking three-dimensional CE-MRA and its clinical application on the lower extremity artery.
Methods: Nineteen patients with suspicion of pelvis and lower extremity artery disease were performed infusion-tracking contrast enhanced MRA with Smartprep technology. The 3D data were acquired in three consecutive imaging segments (pelvis, thighs, legs) by automanually bed movement during bolus injection of 30 ml Gd-DTPA at a flow rate 2.0ml/sec using power injector. All of the three segments targeted views were reconstructed with the maximum intensity projection (MIP) algorithm and multiplanar reconstruction (MPR). The MIP and MPR images and raw data in all of the patients were analyzed together. All of the cases were diagnosed by two doctors in double-blind method before the imaging quality was evaluated. According to the surgical findings and/or digital subtraction angiography (DSA), the diagnostic value of infusion-tracking CE-MRA on pelvis and lower extremity artery disease were evaluated.
Results: 19 cases with various vascular diseases were diagnosed by CE-MRA, all cases were proved by surgical findings and/or the DSA findings.
Conclusion: Infusion-tracking CE-MRA has high diagnostic accuracy in patients with pelvis and lower extremity artery disease.
Keywords: Magnetic resonance angiography；Contrast-enhanced； Lower extremity arteries | 
