| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine the appropriateness of the conditions of piercing specified beforehand based on the general consideration given to all puncture situations expected to occur when an incision is made on biological tissues. <P>SOLUTION: The puncture planning support device 10 includes a model preparation means 11 for preparing an internal organ model 26, a stress calculation means 12 for calculating the stress of the internal organ near the needle position from the conditions of piercing set up beforehand, when the needle tip position is changed immediately before the organ surface incision, an error calculation means 13 for calculating the position of a target T in each case of the changed needle tip positions and determine a positional error L, i.e., the distance between the target T and the needle movement line K, an expected value calculation means 14 for calculating an expected value IP of the positional error L, using a probability density function indicating the variation of stress σ when an incision is made on the organ, from the values obtained by the stress calculation means 12 and the error calculation means 13, and a determination means 15 for determining the appropriateness of the terms of piercing from the expected value IP. <P>COPYRIGHT: (C)2010,JPO&INPIT |
