CPR技术在颅内血流导向装置植入术中的应用

Application of CPR technique in intracranial blood flow diverter device implantation

目的探索曲面重建技术(curved plannar reconstruction,CPR)在颅内血流导向装置植入术中的应用价值。方法选取我院神经介入科采用血流导向装置治疗颅内动脉瘤的20例患者,术中使用锥体束CT(cone beam computed tomography,CBCT)稀释造影,分别使用最大密度投影技术(maximal intensity projection,MIP)和CPR两种算法重建图像评估血流导向装置贴壁情况。由3位神经介入科医师采用VAS(visual analogue scale)盲法评分,比较两种技术重建图像的质量。结果血流导向装置植入术中CBCT扫描后采用CPR技术处理VAS评分为(4.49±0.35),采用MIP技术处理VAS评分为(2.03±0.43),P值为0.0001,差异有统计学意义。结论在血流导向装置植入术中CBCT稀释造影,CPR重建图像质量优于MIP,更有利于观察血流导向装置贴壁情况。

Objective To explore the application value of Curved Plannar Reconstruction(CPR)in cone beam computed tomography(CBCT)of cerebral aneurysm after blood flow diverter device implantation.Methods Twenty patients after interventional blood flow diverter device implantation were selected and scanned by CBCT dilution angiography during operation.The maximum intensity projection(MIP)and curved CPR were used to reconstruct images to evaluate the adherence of the blood flow diverter device.Three neurologists from the interventional department used VAS(Visual Analogue Scale)blind scoring method to compare the quality of the reconstructed images of the two techniques.Results During the implantation of blood flow diverter device,after CBCT scanning,the VAS score of CPR was 4.49±0.35,and that of MIP was 2.03±0.43,P=0.0001,which indicate the difference was statistically significant.Conclusions After CBCT dilution angiography during blood flow diverter device implantation,the image quality of CPR reconstruction is better than that of MIP,which is more suitable for observing the adherence of blood flow diverter device.