数字减影血管造影定量分析:再灌注评估的进阶之路

Quantitative analysis of digital subtraction angiography:the way to advanced reperfusion evaluation

定量数字减影血管造影(DSA)分析技术可通过造影剂浓度变化获取像素点时间-密度曲线,进而计算感兴趣区内造影剂的相应参数,实现患者血流动力学的半定量分析,用于评估急性缺血性大血管闭塞型脑卒中患者血管内治疗后的再灌注情况。随着人工智能技术,尤其是深度学习算法在医学图像处理中的广泛应用,有望实现对DSA图像的进一步挖掘,可对脑血管病变进行多时相、多角度、全方位的综合评估。

Quantitative digital subtraction angiography(DSA)analysis can obtain pixel time density curves through changes in contrast agent concentration,and calculate the corresponding parameters of the contrast agent in the area of interest,achieving semi quantitative analysis of patient hemodynamic,used to evaluate the reperfusion status of intravascular therapy in patients with acute ischemic large vessel occlusion stroke.With the widespread application of artificial intelligence technology,especially deep learning algorithms in medical image processing,it is expected to further excavate the DSA images,which can comprehensively evaluate cerebral vascular diseases in multiple phases,angles,and directions.