Method and apparatus for transforming view orientations in image-guided surgery
First Claim
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1. Apparatus for use in an image-guided surgical or a diagnostic procedure at an internal target site of a patient, said apparatus comprising:
- (a) a data-storage medium for storing scan data representing internal scans of the patient target site;
(b) an instrument defining a view axis, the instrument being adapted to be moved to a selected orientation with respect to the patient target site;
(c) means for tracking the orientation of the instrument with respect to the patient target site as the instrument is moved;
(d) a display device; and
(e) a processor in communication with the data storage medium, the tracking means, and the display device, for carrying out steps (i)-(iii) in a first mode, and steps (iv)-(viii) in a second mode;
(i) determining the orientation of the instrument view axis with respect to the patient target site, as the instrument is moved to a selected orientation with respect to the patient target site;
(ii) using at least some of the scan data to construct an image of the patient target site, as viewed with respect to the orientation of the instrument;
(iii) displaying the image on the display device;
(iv) receiving input that indicates a selected orientation at which a virtual target point, external to the patient, is being viewed;
(v) determining, from the input, the selected view orientation with respect to the virtual target point;
(vi) transforming the view orientation determined in step (v) to a view orientation with respect to the selected patient target point;
(vii) using the scan data to construct an image of the patient target site, as viewed along the transformed view orientation generated in step (vi); and
(viii) displaying the image generated in step (vii) on the display device.
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Abstract
Systems and methods for performing transformations between a view orientation in a virtual space and a view orientation with respect to a target site in a patient'"'"'s body where surgery is being performed. The view in virtual space enables the surgeon to see the internal structures in the target site in a variety of ways and orientations including from behind the site.
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Citations
33 Claims
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1. Apparatus for use in an image-guided surgical or a diagnostic procedure at an internal target site of a patient, said apparatus comprising:
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(a) a data-storage medium for storing scan data representing internal scans of the patient target site;
(b) an instrument defining a view axis, the instrument being adapted to be moved to a selected orientation with respect to the patient target site;
(c) means for tracking the orientation of the instrument with respect to the patient target site as the instrument is moved;
(d) a display device; and
(e) a processor in communication with the data storage medium, the tracking means, and the display device, for carrying out steps (i)-(iii) in a first mode, and steps (iv)-(viii) in a second mode;
(i) determining the orientation of the instrument view axis with respect to the patient target site, as the instrument is moved to a selected orientation with respect to the patient target site;
(ii) using at least some of the scan data to construct an image of the patient target site, as viewed with respect to the orientation of the instrument;
(iii) displaying the image on the display device;
(iv) receiving input that indicates a selected orientation at which a virtual target point, external to the patient, is being viewed;
(v) determining, from the input, the selected view orientation with respect to the virtual target point;
(vi) transforming the view orientation determined in step (v) to a view orientation with respect to the selected patient target point;
(vii) using the scan data to construct an image of the patient target site, as viewed along the transformed view orientation generated in step (vi); and
(viii) displaying the image generated in step (vii) on the display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 31, 32, 33)
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24. A device-readable medium embodying a program of instructions executable by the device for performing a method for use in an image-guided surgical or diagnostic procedure of transforming a view orientation, the program of instructions comprising instructions for:
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(a) storing scan data representing internal scans of a patient target site;
(b) tracking the orientation of a medical instrument defining a view axis with respect to the patient target site, as the instrument is moved to a selected orientation with respect to the patient target site; and
(c) carrying out the following steps (i)-(iii) in a first mode, and steps (iv)-(viii) in a second mode;
(i) determining the orientation of the instrument view axis with respect to the patient target site, as the instrument is moved to a selected orientation with respect to the site;
(ii) using at least some of the scan data to construct an image of the patient target site, as viewed with respect to the instrument;
(iii) displaying the image on the display device;
(iv) determining a view orientation with respect to a virtual target point external to the patient;
(v) transforming the view orientation determined in step (iv) to a view orientation with respect to a selected patient target point;
(vi) using the scan data to construct an image of the patient'"'"'s target site, as viewed along the transformed view orientation generated in step (v); and
(vii) displaying the image generated in step (vi) on the display device. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification