Method and system for virtual endoscopy with guidance for biopsy
First Claim
Patent Images
1. A method for virtual endoscopy in a lumen, comprising:
- acquiring from a patient an imaging dataset including a lesion external to a lumen wall;
generating multiplanar reformations (MPRs) from said dataset;
drawing planar contours around said lesions in said MPRs;
deriving a three-dimensional (3-D) volume of said lesion from said contours;
determining distances from a reference point to the start and end of said lesion;
determining the distance from said reference point to a virtual endoscope in said lumen;
obtaining data on maximum bend characteristics for a said endoscope in a lumen of a given diameter;
deriving projection criteria, based on said 3-D volume, the lumen diameter, and said maximum bend characteristics;
projecting an endoluminal image of said lesion based on said projection criteria, said endoluminal image indicating an optimal biopsy insertion point; and
deriving corrected values for the foregoing distances allowing for said maximum bend characteristics.
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Abstract
A method for virtual endoscopy in a lumen includes acquiring from a patient an imaging dataset exhibiting a lesion external to a lumen wall; deriving a three-dimensional (3-D) volume of the lesion; obtaining data on maximum bend characteristics for a given endoscope; and deriving projection criteria, based on the 3-D volume and the maximum bend, for projecting an endoluminal image of said lesion, indicating an optimal biopsy insertion point.
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Citations
55 Claims
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1. A method for virtual endoscopy in a lumen, comprising:
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acquiring from a patient an imaging dataset including a lesion external to a lumen wall; generating multiplanar reformations (MPRs) from said dataset; drawing planar contours around said lesions in said MPRs; deriving a three-dimensional (3-D) volume of said lesion from said contours; determining distances from a reference point to the start and end of said lesion; determining the distance from said reference point to a virtual endoscope in said lumen; obtaining data on maximum bend characteristics for a said endoscope in a lumen of a given diameter; deriving projection criteria, based on said 3-D volume, the lumen diameter, and said maximum bend characteristics; projecting an endoluminal image of said lesion based on said projection criteria, said endoluminal image indicating an optimal biopsy insertion point; and deriving corrected values for the foregoing distances allowing for said maximum bend characteristics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for virtual endoscopy in a lumen, comprising:
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acquiring from a patient an imaging dataset exhibiting a lesion external to a lumen wall; drawing planar contours around said lesion; deriving a three-dimensional (3-D) volume of said lesion; obtaining data on maximum bend characteristics for a given endoscope; and deriving projection criteria, based on said 3-D volume and said maximum bend, for projecting an endoluminal image of said lesion indicating an optimal biopsy insertion point. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for virtual endoscopy in a lumen, comprising:
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means for acquiring from a patient an imaging dataset exhibiting a lesion external to a lumen wall; generating multiplanar reformations (MPRs) from said dataset; drawing planar contours around said lesion; means for deriving a three-dimensional (3-D) volume of said lesion; means for obtaining data on maximum bend characteristics for a given endoscope; and means for deriving projection criteria, based on said 3-D volume and said maximum bend, for projecting an endoluminal image of said lesion, indicating an optimal biopsy insertion point.
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28. A method for virtual endoscopy in a lumen, comprising:
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acquiring a dataset from a patient using an imaging technique such as CT or MRI; generating multiplanar reformations (MPRs) from said dataset, comprising two-dimensional (2D) sections; displaying a virtual endoscopic view utilizing said dataset; drawing planar contours around lesions in said MPRs; calculating a 3-D volume from the planar contours; displaying the 3-D volume in an endoluminal view; selecting a reference point; utilizing software to display the distances between said reference point to the start and endpoints of a lesion and to a virtual endoscope position; utilizing software to display the maximal bending angle of an endoscope in a selected insertion area, a corrected distance to said reference point after bending, and to project an insertion point onto the endoluminal wall in said selected insertion area, and optionally, to display rotational information; and guiding a real endoscope in a patient to said insertion point using information from said virtual bronchoscopy.
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29. A computer program product comprising a computer useable medium having computer program logic recorded thereon for program code for performing a method for virtual endoscopy in a lumen, comprising:
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acquiring from a patient an imaging dataset exhibiting a lesion external to a lumen wall; deriving a three-dimensional (3-D) volume of said lesion; obtaining data on maximum bend characteristics for a given endoscope; and deriving projection criteria, based on said 3-D volume and said maximum bend, for projecting an endoluminal image of said lesion, indicating an optimal biopsy insertion point.
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30. A method for virtual endoscopy within a cavity, comprising:
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acquiring from said cavity an imaging dataset including a feature of interest external to a cavity wall; drawing contours around said feature; deriving a three-dimensional (3-D) volume of said feature from said contours; determining distances from a reference point to the start and end of said feature; determining the distance from said reference point to a virtual endoscope in said cavity; obtaining data on maximum bend characteristics for said endoscope corresponding to said cavity dimensions; deriving projection criteria, based on said 3-D volume, said cavity dimensions, and said maximum bend characteristics; projecting an endoluminal image of said feature based on said projection criteria, said endoluminal image indicating an optimal access point; and deriving corrected values for the foregoing distances allowing for said maximum bend characteristics. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A method for virtual endoscopy in a cavity, comprising:
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acquiring an imaging dataset exhibiting a feature of interest external to a wall of said cavity; deriving a three-dimensional (3-D) volume of said feature of interest; obtaining data on maximum bend characteristics for a given endoscope; and deriving projection criteria, based on said 3-D volume and said maximum bend, for projecting an endoluminal image of said feature of interest. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A method for virtual endoscopy in a lumen, comprising:
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deriving a three-dimensional (3-D) volume of a lesion; obtaining data on maximum bend characteristics for a given endoscope; and deriving projection criteria, based on said 3-D volume and said maximum bend, for projecting an endoluminal image of said lesion indicating an optimal biopsy insertion point.
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Specification