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介入性放射学是近10年来放射学界重要的先进技术之一,即在X线、CT、B超等监视下将穿刺针或导管插入人体组织的靶目标进行诊断及治疗。它包括两大类:经皮非经血管技术和经皮经血管技术。CT介入技术属前者,它包括CT导引下经皮活检和介入性治疗。 1976年Haaga等首次报道CT导引下经皮穿刺活检。由于CT扫描分辨率高,对比度好,可清晰显示病变大小、外形、位置,以及病变与周围结构的空间关系。同时,也可精确地确定进针点、角度和深度,避免损伤血
Interventional radiology is one of the most important advanced technologies in the radiology field in recent 10 years. It is to insert the needle or catheter into the target of human tissues for the diagnosis and treatment under the surveillance of X-ray, CT and B-ultrasound. It includes two broad categories: percutaneous non-transvascular technology and percutaneous transvascular technology. The CT interventional technique is the former, which includes CT guided percutaneous biopsy and interventional therapy. In 1976, Haaga et al. First reported CT-guided percutaneous biopsy. Due to the high resolution and good contrast of the CT scan, the size, shape, location, and the spatial relationship between the lesions and the surrounding structures can be clearly displayed. At the same time, needle points, angles and depths can also be accurately determined to avoid damaging the blood