초록 ▼

Diagnostic mapping data representing a series of planar slices through a patient are generated by a CT or other multi-plane scanner (A) and stored in an image memory (32). To free the CT or other scanner for other patients, the mapping data and patient are transferred to a second location. At the se

Diagnostic mapping data representing a series of planar slices through a patient are generated by a CT or other multi-plane scanner (A) and stored in an image memory (32). To free the CT or other scanner for other patients, the mapping data and patient are transferred to a second location. At the second location, the patient is restrained in a digital radiographic imaging apparatus (B) in which data representing a shadowgraphic image is generated and stored in a reference memory (60). The transferred mapping data is stored in a second image memory (32′) at the second site. A shadowgraphic image synthesizer (70) synthesizes an analogous shadowgraphic image from the diagnostic mapping data in the second image memory taken relative to a selected spatial position and angular orientation. The reference and synthesized shadowgraphic images are superimposed or otherwise concurrently displayed on a video display (64). The spatial position and angular orientation from which the synthesized image is projected are adjusted until an optimal match between the superimposed images is achieved. In this manner, the current actual position of the patient and the diagnostic data in the second image memory are brought into registration. From images representing slices through the patient reconstructed from data in the image memory, the physician plans a point of entry and path through the patient which a surgical instrument (100) is to follow. A surgical instrument guide (90) is positioned such that the surgical instrument enters the patient at the coordinates at the selected point of entry and follows the selected path.

대표청구항 ▼

A clinical method in which a surgical instrument is precisely positioned relative to an internal region of the subject in advance of an invasive procedure, the method comprising: imaging a volume of the subject to locate a structure within the subject precisely and producing three dimensional diagno

A clinical method in which a surgical instrument is precisely positioned relative to an internal region of the subject in advance of an invasive procedure, the method comprising: imaging a volume of the subject to locate a structure within the subject precisely and producing three dimensional diagnostic mapping data indicative thereof; transferring the subject to a clinical treatment station at which the invasive procedure is to be performed, imaging the patient to relocate the structure within the patient relative to the treatment station by generating a two dimensional calibration reference image through the imaged volume that includes the structure prior to instituting the invasive procedure; configuring an analogous two dimensional image from the three dimensional diagnostic mapping data; comparing the calibration reference and diagnostic data two dimensional images to determine the relative orientation between the patient and the three dimensional mapping data; and, in accordance with the comparing step, moving and orienting the surgical instrument to position the surgical instrument relative to the imaged volume for invasive treatment of the located structure.