Nitatori T, Yokoyama K, Hachiya J, Yoshino A, Yamakami N, Katase S, Ichikawa T
Department of Radiology, School of Medicine, Kyorin University, Mitaka, Tokyo, Japan.
Radiat Med. 1999 Jan-Feb;17(1):9-14.
The aim of this study was to evaluate fast dynamic MRI, which consists of a subsecondal MRI sequence combined with a rapid contrast medium infusion technique, in examining clinical cases of aortic dissection.
The subjects consisted of 27 patients with aortic dissection. Turbo-FLASH imaging of the aorta was conducted to obtain 50 image frames within 40 seconds.
Recognition of the intimal flap and differentiation of the true channel from the false channel was easily accomplished in all 15 patients with a patent false channel. The entry site was detected in 13 of 15 patients. Differentiation of slow flow from thrombus in the false channel was possible in all 27 cases, and the relationship between the lesion and the main branches of the aortic arch was identified in 26 of 27 cases.
Fast dynamic MRI may provide a large amount of information that is useful for the diagnosis of aortic dissection.
本研究旨在评估快速动态磁共振成像（MRI），其由亚秒级MRI序列与快速造影剂注入技术相结合，用于检查主动脉夹层的临床病例。
研究对象包括27例主动脉夹层患者。对主动脉进行快速低角度激发（Turbo-FLASH）成像，在40秒内获取50帧图像。
在所有15例存在通畅假腔的患者中，均能轻松识别内膜瓣并区分真腔与假腔。15例患者中有13例检测到入口部位。在所有27例病例中均能够区分假腔内的缓慢血流与血栓，并且在27例病例中有26例明确了病变与主动脉弓主要分支之间的关系。
快速动态MRI可能提供大量有助于主动脉夹层诊断的信息。
