Department of Science of the Images, A.O.U. di Cagliari, Cagliari, Italy.
Eur Rev Med Pharmacol Sci. 2010 Sep;14(9):775-84.
Our purpose was to investigate the multi-detector-row CT angiography (MDCTA) application in endoleak detection.
Fifty-nine patients that underwent endovascular aneurysm repair (EVAR) of an infrarenal abdominal aortic aneurysm with endoluminal stent graft were retrospectively studied. MDCTA scans were obtained after administration of 110-130 mL of contrast material using a 4-6 mL/sec flow rate. We made unenhanced, arterial (15-20 sec) and delayed (100 sec) acquisitions. For each patient four MDCTA datasets (pre-EVAR, 1, 6, and 12 months follow-up) were obtained. Each examination was studied by two observers. Kappa value was calculated in order to evaluate inter-observer agreement.
Twenty-one endoleaks were detected in eighteen patients. Fifteen and eighteen endoleaks were detected by using biphasic arterial CT and biphasic delayed CT respectively (sensitivity of 71.4% and 85.7% respectively). We observed a positive correlation between the presence of endoleak and the increasement in aneurysm size. Interobserver agreement was 88.1% and kappa value was 0.685.
Biphasic CT for endoleak detection is significantly superior to arterial and delayed phases respectively. We observed a good interobserver agreement.
本研究旨在探讨多排螺旋 CT 血管造影（MDCTA）在血管内治疗后内漏检测中的应用。
回顾性分析 59 例行腹主动脉瘤腔内修复术（EVAR）的患者资料。使用 4-6mL/sec 的流速注入 110-130mL 造影剂后行 MDCTA 扫描。我们进行了平扫、动脉期（15-20 秒）和延迟期（100 秒）扫描。对每位患者的术前、术后 1、6、12 个月的 MDCTA 数据进行了 4 次采集。每次检查均由两位观察者进行评估。计算 Kappa 值以评估观察者间的一致性。
18 例患者共检测到 21 个内漏。使用双期动脉期 CT 和双期延迟期 CT 分别检测到 15 个和 18 个内漏（敏感性分别为 71.4%和 85.7%）。我们观察到内漏的存在与动脉瘤的增大之间存在正相关关系。观察者间的一致性为 88.1%，Kappa 值为 0.685。
双期 CT 用于内漏检测明显优于动脉期和延迟期。我们观察到观察者间具有良好的一致性。
Zotero 插件