| 摘要 |
In a stereotaxy system and method an exoskeleton material (12), such as a thermoplastic mesh, is heat softened and the heat softened material stretched over and conformed to a soft region of a subject, e.g. a patient's breast. The material is allowed or caused to set or harden and is affixed (14) to a support (10) such that the soft tissue is firmly constrained. Magnetic resonance visible markers (18) are affixed to the exoskeleton material adjacent the soft tissue. The patient is examined with a magnetic resonance or other imaging device (20) to generate a three-dimensional image representation (28) for display on a monitor (32). Using the markers, a wand (40) with emitters (42) and receivers (44), and a coordinate system relationship processor (48) determines a relation or transform between a coordinate system of the patient and a coordinate system of the image displayed on the monitor. A trajectory for a biopsy, resection, or the like, is planned using a guide (50). Emitters (52) on the guide are activated to generate a corresponding human-readable trajectory display through the image displayed on the monitor. After repositioning the guide as necessary, an appropriate trajectory and depth through the patient is selected from the human-readable display. An appropriate medical instrument (64) is inserted along the guide to perform the biopsy, resection, or other medical procedure. <IMAGE> |
