| 摘要 |
<p>The invention relates to MR guided intervention. For biopsies and similar interventions the challenge is to align a needle or other interventional device along an anticipated trajectory which reaches a target point but does not intersect sensitive structures between the target point and the surface. The following method is proposed so as to position an MR visible device: acquiring pre-intervention MR-images, establishing an anticipated trajectory and an entry point by imaging the MR-visible device and a thick slab positioned parallel to the surface and reproducing the MR localizer in the MR-image of the slab, and moving the MR visible localizer to the entry point, imaging two mutual orthogonal slices passing through the anticipated trajectory between the entry point and the target point and establishing an angle of entry by using, for example an MR-visible pen and a targeting device.</p> |
