目的:为了提高CT引导一次穿刺的成功率。方法:先把CT引导穿刺活检及介入治疗定位仪置于病灶部位,利用该定位仪找出通过病灶中心的体外两个点,使三点处于一直线上,并在该定位仪的引导下,行穿刺活检及介入治疗。结果:利用该定位仪,稳定性好,避免了穿刺的盲目性,大大提高了一次穿刺的成功率。结论:CT引导穿刺活检及介入治疗定位仪安全、稳定性好,值得推广应用。 Objective: To improve the success rate of CT guided primary puncture. Methods: CT guided biopsy and interventional therapy locator placed in the lesion site, the use of the locator to find out through the center of the lesion in vitro two points, so that the three points in a straight line, and in the guidance of the locator, Percutaneous biopsy and interventional therapy. Results: With this locator, the stability is good, the blindness of puncture is avoided, and the successful rate of puncture is greatly improved. Conclusion: CT guided biopsy and interventional treatment of locator safe, good stability, it is worth to promote the application.