Abstract
Percutaneus needle puncture is minimally invasive and presents many advantages to the patients such as little pain, small scarring, and quick recovery. Surgeon is required to place the tip of a needle at a tumor precisely. However, even for expert surgeons it is not easy because of the needle deflection. The deflection depends on the needle shape that differs from maker to maker. The goal of our study is to estimate the main factor of needle deflections. Thus, we measured needle insertion trajectory by using three-type of needles for a tissue phantom. To estimate the main factor, we use a multivariate technique.
