Tennant W G, Hartnell G G, Baird R N, Horrocks M
Vascular Surgery Unit, Royal United Hospital, Bath, England, United Kingdom.
J Vasc Surg. 1993 Apr;17(4):703-9.
The purpose of this study was to compare the ability of ultrasonography (US), contrast-enhanced computed tomography (CT), and magnetic resonance imaging (MRI) to display the anatomy of abdominal aortic aneurysms and to detect the presence of inflammatory change.
We prospectively studied 79 patients with abdominal aortic aneurysms (64 noninflammatory aneurysms [NIAAs] and 15 inflammatory aneurysms [IAAs]) with US, CT, and MRI.
Ultrasonography failed to diagnose the level of the aneurysm neck in three IAAs and 18 NIAAs. It failed to differentiate NIAAs from IAAs and to visualize the origins of the renal arteries in all cases. With CT the level of the aneurysm neck was incorrectly stated as lying above the level of the renal arteries in two cases of IAA and four cases of NIAA, and the renal artery origins were seen in only 10 of 77 patients. Inflammatory change was diagnosed correctly in seven of 15 patients, whereas six NIAAs were falsely diagnosed as inflammatory. MRI successfully diagnosed neck level and inflammatory change in all cases. Of two failures to visualize the renal artery origins, only one was caused by radiologic factors. In addition, characteristic radiologic features were seen in MRI images of IAAs, and these will be described both in vivo and in vitro.
Our results suggest that MRI is superior to other methods in identifying the anatomy of aneurysms and the presence of inflammatory change.
本研究旨在比较超声检查（US）、增强计算机断层扫描（CT）和磁共振成像（MRI）显示腹主动脉瘤解剖结构及检测炎症变化的能力。
我们对79例腹主动脉瘤患者（64例非炎性动脉瘤[NIAAs]和15例炎性动脉瘤[IAAs]）进行了US、CT和MRI的前瞻性研究。
超声检查未能诊断出3例IAAs和18例NIAAs的动脉瘤颈部水平。在所有病例中，它未能区分NIAAs和IAAs，也未能显示肾动脉的起源。CT检查时，2例IAA和4例NIAA的动脉瘤颈部水平被错误判定为位于肾动脉水平之上，77例患者中只有10例可见肾动脉起源。15例患者中有7例炎症变化被正确诊断，而6例NIAAs被误诊为炎性。MRI在所有病例中均成功诊断出颈部水平和炎症变化。在未能显示肾动脉起源的2例中，只有1例是由放射学因素导致的。此外，在IAAs的MRI图像中可见特征性放射学表现，这些将在体内和体外进行描述。
我们的结果表明，在识别动脉瘤解剖结构和炎症变化方面，MRI优于其他方法。
