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目的在于探讨ＣＴ血管造影及最大信号强度投影重建技术检查颅内动脉瘤的准确性以及ＳＣＴＡ取代常规血管造影的可能性。方法２５例临床疑诊颅内动脉瘤的病人中２３例接受了ＳＣＴＡ和常规血管造影。２例单独经ＳＣＴＡ诊断后直接手术治疗。结果２５例动脉瘤中，ＳＣＴＡ准确检出了２３例另２例小于３ｍｍ的动脉瘤未被ＳＣＴＡ检查发现。与传统血管造影相对照，ＳＣＴＡ的诊断准确率为９２％。对于检测血栓性动脉瘤ＳＣＴＡ优于传统血管造影。结论本组研究表明ＳＣＴＡ结合ＭＩＰ图像重建技术能较准确地诊断３ｍｍ以上的颅内动脉瘤，并判断其大小，形态，瘤颈以及瘤内血栓的存在。
The purpose is to explore the accuracy of CT angiography and maximum signal intensity projection reconstruction techniques for detecting intracranial aneurysms and the possibility of SCTA replacing conventional angiography. Methods Twenty-five patients with clinically suspected intracranial aneurysms underwent SCTA and conventional angiography. 2 cases were diagnosed by SCTA alone after the direct surgical treatment. Results In 25 aneurysms, 23 cases of aneurysms of the other 2 cases less than 3 mm were detected by SCTA without being detected by SCTA. In contrast to conventional angiography, the diagnostic accuracy of SCTA was 92%. For the detection of thrombotic aneurysms SCTA superior to traditional angiography. Conclusion This study shows that SCTA combined with MIP image reconstruction can accurately diagnose intracranial aneurysms more than 3mm, and determine the size, shape, tumor neck and the presence of intratumoral thrombus.