Sardelic F, Fletcher J P, Ho D, Simmons K
Department of Surgery, Westmead Hospital, New South Wales, Australia.
Australas Radiol. 1995 May;39(2):107-11. doi: 10.1111/j.1440-1673.1995.tb00252.x.
Pre-operative imaging of abdominal aortic aneurysms (AAA) is important in determining suitability for operation and operative approach. Ultrasound imaging is an excellent screening modality but is relatively poor at identifying renal arteries and the extent of iliac involvement. Computed tomography scanning with intravenous contrast and arteriography are invasive modalities that are associated with a small risk. Magnetic resonance imaging (MRI) offers the potential of accurate anatomical definition without use of contrast agents and passage of an intra-arterial catheter. Eight patients who had their AAA evaluated with MRI are reported. All had renal arteries accurately defined, intra-aneurysmal thrombosis was well delineated, and iliac extension was correctly identified in four cases. The initial experience has been most encouraging and the authors consider that MRI may become the investigation of choice for pre-operative AAA assessment.
腹主动脉瘤（AAA）的术前成像对于确定手术适用性和手术方式很重要。超声成像是一种出色的筛查方式，但在识别肾动脉和髂动脉受累程度方面相对较差。静脉注射造影剂的计算机断层扫描和动脉造影是侵入性检查方式，存在较小风险。磁共振成像（MRI）无需使用造影剂和动脉内导管就能提供准确解剖结构定义的潜力。本文报告了8例接受MRI评估腹主动脉瘤的患者。所有患者的肾动脉均被准确界定，瘤内血栓清晰显示，4例患者的髂动脉扩展情况被正确识别。初步经验非常令人鼓舞，作者认为MRI可能会成为腹主动脉瘤术前评估的首选检查方法。
