常规透视和超声的实时引导为各种介入性操作实施提供了便利,但对许多内脏靶目标却难以实现。CT导向提供了很好的空间分辨率,但CT引导的活检及引流术耗时又不方便。作者对GE HiSpeed Advantage CT机的计算机自动扫描(CAST)Smartprep功能参数进行了改良,实现了接受实时的CT透视。首先行常规横断面扫描定位对病人皮肤做标记,在扫描架激光灯下,以及对标记部位的系列CAST扫描中置入活检针,每隔15～30s对规定的 Real-time guidance of conventional fluoroscopy and ultrasound facilitates the implementation of various interventional procedures, but is difficult to achieve for many visceral target. CT guidance provides good spatial resolution, but CT-guided biopsy and drainage are time-consuming and inconvenient. The authors modified the Computer Auto-Scan (CAST) Smartprep feature of the GE HiSpeed ​​Advantage CT to enable real-time CT fluoroscopy. First of all, the conventional cross-sectional scan positioning of the patient’s skin mark, under the gantry laser light, and the marked part of the series of CAST scan into the biopsy needle, every 15 ~ 30s on the provisions of