Kelekis N L, Semelka R C, Molina P L, Warshauer D M, Sharp T J, Detterbeck F C
Department of Radiology, University of North Carolina at Chapel Hill 27599-7510, USA.
J Magn Reson Imaging. 1997 Jul-Aug;7(4):652-6. doi: 10.1002/jmri.1880070407.
To assess the reproducibility and image quality of immediate postgadolinium chelate spoiled gradient-echo MRI in demonstrating disease of the abdominal aorta. All patients (27 patients: 21 men, 6 women) with substantial disease of the abdominal aorta, who underwent abdominal MR examinations at 1.5 T between 1991 and 1995, were entered in the study. Patients were referred for evaluation of suspected aortic disease (14 patients) or other abdominal diseases (13 patients). Three experienced investigators manually measured luminal and external aortic wall diameters and rated image quality, definition of inner and outer walls, extent of disease, and presence of other abdominal abnormalities, in an independent fashion. A cardiovascular surgeon then rated all studies to determine whether clinical management could be based on the MR findings alone. There was 98 to 99% agreement in measurements of luminal and external wall diameter between the three investigators. Overall image quality was rated as good in 77.8 to 88.9% of patients. A total of 31 additional nonaortic abdominal abnormalities were detected by all observers. The cardiovascular surgeon rated 25 of 27 studies as adequate to determine clinical management based on MR findings alone. Immediate postgadolinium spoiled gradient-echo MRI is a reproducible technique for the demonstration of abdominal aortic disease and possesses good image quality. Advantages of this technique include simultaneous evaluation of other nonvascular diseases of the abdomen, short examination time, and easy implementation as part of routine abdominal MRI scanning protocol.
评估钆螯合物增强后即刻扰相梯度回波磁共振成像（MRI）在显示腹主动脉疾病方面的可重复性和图像质量。对1991年至1995年间在1.5T磁场下接受腹部MR检查的所有患有严重腹主动脉疾病的患者（27例患者：21例男性，6例女性）进行了研究。患者因疑似主动脉疾病（14例患者）或其他腹部疾病（13例患者）而被转诊进行评估。三名经验丰富的研究人员独立手动测量管腔和主动脉外壁直径，并对图像质量、内外壁清晰度、疾病范围以及其他腹部异常情况进行评分。然后，一名心血管外科医生对所有研究进行评分，以确定临床治疗是否可以仅基于MR检查结果。三名研究人员在管腔和外壁直径测量方面的一致性为98%至99%。77.8%至88.9%的患者总体图像质量被评为良好。所有观察者共检测到31处额外的非主动脉腹部异常情况。心血管外科医生将27项研究中的25项评为足以仅基于MR检查结果来确定临床治疗方案。钆螯合物增强后即刻扰相梯度回波MRI是一种用于显示腹主动脉疾病的可重复技术，且具有良好的图像质量。该技术的优点包括可同时评估腹部其他非血管性疾病、检查时间短以及作为常规腹部MRI扫描方案的一部分易于实施。
