Wang Haifeng, Ye Xianwang, Gao Xiang, Zhou Shengjun, Lin Zhiqing
Department of Medical College, Ningbo University, No. 818, Fenghua Road, Jiangbei District, Ningbo City, Zhejiang Province, P.R. China.
Department of Radiology, No. 1 Hospital of Ningbo, No. 59, Liuting Road, Haishu District, Ningbo City, Zhejiang Province, P.R. China.
J Neuroradiol. 2014 May;41(2):117-23. doi: 10.1016/j.neurad.2013.04.004. Epub 2013 Jun 15.
Digital subtraction angiography (DSA) is the current imaging 'gold standard' for diagnosis of arteriovenous malformation (AVM). The latest technique, four-dimensional computed tomography (4D-CT), offers a new diagnostic method for assessing AVM in real time. This study used a 320-detector-row CT scanner to compare the value of 4D-CT angiography (4D-CTA) with DSA in the diagnosis of untreated AVM patients.
Seventeen patients diagnosed with AVM by DSA were included in this study. Two independent readers blind to the results of all examinations evaluated the findings of DSA and 4D-CTA in each patient. All results were then documented using a standardized scoring sheet.
The results of 4D-CTA in all 17 cases were fully consistent with DSA for AVM location, size and vascular structures. 4D-CTA had the same ability as DSA to distinguish the main feeding arteries in all cases, although in the identification of smaller and specific arterial branches, there were discrepancies in one patient between the two methods. In the diagnosis of draining veins, however, 4D-CTA successfully displayed all of the vessels found by DSA.
4D-CTA was able to detect all AVM lesions, including their size, location, feeding arteries and draining veins. Thus, 4D-CTA has a value similar to that of DSA in the diagnosis and assessment of AVM.
数字减影血管造影（DSA）是目前诊断动静脉畸形（AVM）的影像学“金标准”。最新技术四维计算机断层扫描（4D-CT）为实时评估AVM提供了一种新的诊断方法。本研究使用320排CT扫描仪比较4D-CT血管造影（4D-CTA）与DSA在未治疗的AVM患者诊断中的价值。
本研究纳入了17例经DSA诊断为AVM的患者。两名对所有检查结果不知情的独立阅片者评估了每位患者的DSA和4D-CTA检查结果。然后使用标准化评分表记录所有结果。
所有17例患者的4D-CTA结果在AVM的位置、大小和血管结构方面与DSA完全一致。在所有病例中，4D-CTA在区分主要供血动脉方面与DSA具有相同的能力，尽管在识别较小的特定动脉分支时，两种方法在一名患者中存在差异。然而，在诊断引流静脉方面，4D-CTA成功显示了DSA发现的所有血管。
4D-CTA能够检测所有AVM病变，包括其大小、位置、供血动脉和引流静脉。因此，4D-CTA在AVM的诊断和评估中具有与DSA相似的价值。
