双能量CT血管造影术用于诊断颅内硬脑膜动静脉瘘
Dual-energy CT angiography for the diagnosis of intracranial dural arteriovenous fistula.
作者信息
Guo Yuanxing, Ou Shan-Xing, Qian Min, Zeng Xiaotao, Li Bin
机构信息
Department of Radiology, Guangzhou General Hospital of Guangzhou Command of PLA Guangzhou 510010, China.
School of Automation Science and Engineering, South China University of Technology Guangzhou 510010, China.
出版信息
Int J Clin Exp Med. 2015 May 15;8(5):7802-8. eCollection 2015.
PURPOSE
To investigate the clinical utility of dual-source dual-energy CT angiography (DSDECTA) for diagnosing intracranial dural arteriovenous fistula (DAVF).
METHODS
Nine intracranial DAVF patients were examined using Siemens DSDECTA and cerebral digital subtraction angiography (DSA). Imaging data were retrospectively analyzed to evaluate the concordance between the imaging modalities.
RESULTS
DSDECTA examination showed that the blood-supplying arteries were thickened and the draining veins and dural sinuses were expanded in all 9 patients. The presence and characteristics of intracranial DAVF were confirmed using DSA. Head CT showed subarachnoid hemorrhage in 4 cases and intracerebral hematoma in 3 cases.
CONCLUSION
Although DSA is the gold standard for DAVF diagnosis, DSDECTA is less invasive and more suitable for revealing the three-dimensional structure of secondary intracranial lesions as well as other DAVF characteristics. Thus, DSDECTA may be a new alternative for noninvasive screening of suspected DAVF patients before interventional embolization and surgical resection.
目的
探讨双源双能量CT血管造影（DSDECTA）在诊断颅内硬脑膜动静脉瘘（DAVF）中的临床应用价值。
方法
对9例颅内DAVF患者行西门子DSDECTA及脑数字减影血管造影（DSA）检查。对影像资料进行回顾性分析，评估两种成像方式的一致性。
结果
DSDECTA检查显示，9例患者供血动脉增粗，引流静脉及硬脑膜窦增宽。采用DSA证实了颅内DAVF的存在及特征。头颅CT显示4例蛛网膜下腔出血，3例脑内血肿。
结论
虽然DSA是DAVF诊断的金标准，但DSDECTA侵入性较小，更适合显示继发颅内病变的三维结构及其他DAVF特征。因此，DSDECTA可能是在介入栓塞和手术切除前对疑似DAVF患者进行无创筛查的新选择。
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