Can CT angiography reconstructed from CT perfusion source data on a 320-section volume CT scanner replace conventional CT angiography for the evaluation of intracranial arteries?
Can CT angiography reconstructed from CT perfusion source data on a 320-section volume CT scanner replace conventional CT angiography for the evaluation of intracranial arteries?
复制标题
在320断面容积CT扫描仪上根据CT灌注源数据重建的CT血管造影能否替代传统CT血管造影来评估颅内动脉？
DOI：
10.1007/s11604-015-0429-y
复制
发表时间：
2015
期刊：
影响因子：
2.1
通讯作者：
Y.
中科院分区：
文献类型：
--
作者：
Kidoh;M. Hirai;T. Oda;S. Utsunomiya;D. Kawano;T. Yano;S. Nakamura;H. Makino;K. Iryo;Y. Azuma;M. Hayashida;E. Nakaura;T. Yamashita;Y.
目的比较常规CT血管造影术(CTA)和利用320层CT扫描机采集的CT灌注源数据重建的CTA对颅内动脉的评价。材料和方法我们的研究包括7例颅内动脉瘤夹闭和搭桥术的患者。所有患者均行常规和灌注CTA及数字减影血管造影(DSA)检查。以DSA为金标准，2位放射科医生在常规和灌注CTA图像上评估了10个动脉节段。在4分制中，他们独立地对常规和灌注CTA图像上的颅内动脉的图像质量和血管可视化进行了评分。结果共评价了65个无明显异常的动脉节段。虽然常规CTA的平均图像质量评分略高于灌注式CTA，但两者没有显著差异。所有患者平扫CTA的有效剂量分别为4.2mSv和3.1mSv。结论对于以DSA为金标准的颅内动脉评价，在可接受的辐射剂量下，灌注CTA的图像质量和血管显示与常规CTA相似。
PurposeTo compare conventional CT angiography (CTA) and CTA reconstructed from CT perfusion source data (perfusion CTA) acquired on a 320-section CT scanner for the evaluation of intracranial arteries.Materials and methodsOur study included 7 patients who had undergone trapping of an intracranial aneurysm and placement of a bypass. All underwent conventional and perfusion CTA and digital subtraction angiography (DSA). Using DSA as the gold standard, 2 radiologists evaluated 10 arterial segments on conventional and perfusion CTA images. On a 4-point scale they independently scored the image quality and vascular visualization of the intracranial arteries on the conventional and perfusion CTA images. The effective radiation dose to each patient was also recorded.ResultsA total of 65 arterial segments without apparent abnormalities were assessed. While the mean image quality score tended to be slightly higher for conventional than perfusion CTA, there was no significant difference. The effective dose for perfusion and conventional CTA with unenhanced CT was 4.2 mSv and 3.1 mSv, respectively, for all patients.ConclusionFor the evaluation of intracranial arteries using DSA as the gold standard, perfusion CTA yields image quality and vascular visualization similar to conventional CTA at an acceptable radiation dose.