Method and system to facilitate image guided surgery
First Claim
1. A system for projecting onto an anatomical body markings made on a data-base body of pre-acquired images of the anatomical body, said system comprising:
- a spatial determinator for determining spatial positional information of the anatomical body by tracking the anatomical body in a frame of reference and generating first positional signals indicative of the spatial positional information of the anatomical body in the frame of reference;
a mapping unit for receiving first positional signals indicative of the spatial positional information of the anatomical body in the frame of reference, mapping the markings made on the data-base body of pre-acquired images onto corresponding locations on the anatomical body and generating a mapping signal indicative of the corresponding locations in the frame of reference of the markings on the data-base body; and
an image projecting device for receiving the mapping signal and projecting an image of the markings made on the data-base body onto the corresponding locations of the anatomical body, said image projecting device projecting the image substantially normal to a surface of a portion of the corresponding locations of the anatomical body.
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Abstract
A method and system to facilitate image guided surgery by projecting onto the patient an image corresponding to markings made on pre-acquired images of the patient is disclosed. The image is projected by an imaging projecting device such as a laser which emits coherent visible light. The position of the patient and the image are determined in the same frame of reference. The markings made on the pre-acquired images are then mapped onto the corresponding locations of the patient. The image projecting device then projects images onto the patient corresponding to the markings made on the pre-acquired images. The image is projected substantially normal to a surface of the corresponding locations on the anatomical body to decrease errors arising from the image being optically distorted by the surface features of the patient. The images projected by the image projecting device can be marked onto the patient so that they are visible after the image projecting device stops emitting radiation. Use of a photodynamic substance can also be used in conjunction with the light emitted from the laser to treat tumors and other abnormalities in the patient.
54 Citations
39 Claims
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1. A system for projecting onto an anatomical body markings made on a data-base body of pre-acquired images of the anatomical body, said system comprising:
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a spatial determinator for determining spatial positional information of the anatomical body by tracking the anatomical body in a frame of reference and generating first positional signals indicative of the spatial positional information of the anatomical body in the frame of reference;
a mapping unit for receiving first positional signals indicative of the spatial positional information of the anatomical body in the frame of reference, mapping the markings made on the data-base body of pre-acquired images onto corresponding locations on the anatomical body and generating a mapping signal indicative of the corresponding locations in the frame of reference of the markings on the data-base body; and
an image projecting device for receiving the mapping signal and projecting an image of the markings made on the data-base body onto the corresponding locations of the anatomical body, said image projecting device projecting the image substantially normal to a surface of a portion of the corresponding locations of the anatomical body. - 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, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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27. A method for projecting onto an anatomical body markings made on a data-base body of pre-acquired images of the anatomical body, said method comprising the steps of:
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obtaining spatial positional information of the anatomical body by tracking the anatomical body in a frame of reference;
mapping the markings made on the data-base body of pre-acquired images onto corresponding locations on the anatomical body; and
projecting an image of the markings made on the data-base body onto the corresponding locations on the anatomical body in the frame of reference substantially normal to a surface of a portion of the corresponding locations of the anatomical body.
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Specification