Registration of anatomical data sets
First Claim
1. A system for collecting and manipulating a volume data set of an anatomical structure, the system comprising:
- an imaging device for obtaining a first volume data set of an anatomical structure of a patient and a second volume data set of the anatomical structure; and
a computer comprising a processing unit and a memory unit, wherein the computer is configured to;
calculate an inherent feature of the first volume data set and the second volume data set, wherein the inherent feature has a unique position and orientation in relation to the anatomical structure that can be identified from any reference position;
assign a first arbitrary reference frame to the first volume data set and a second arbitrary reference frame to the second volume data set;
correlate the inherent feature to the first arbitrary reference frame;
associate additional spatial information with the first volume data set, wherein the additional spatial information has a unique spatial relationship correlated with the first arbitrary reference frame;
register the first volume data set with the second volume data set based on the inherent feature; and
correlate the additional spatial information to the second volume data set.
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Accused Products
Abstract
Methods and systems are disclosed for relating additional spatial information associated with one volume data set of an anatomical structure with another volume data set of the anatomical structure where the spatial information is not available. A unique spatial characteristic of the volume data set is identified, such as an image moment of inertia, and an arbitrary reference frame is assigned to the volume data set and correlated with the unique spatial characteristic. The additional spatial information is also correlated with the arbitrary reference frame. The additional spatial information is then correlated to a second volume data set of the anatomical structure by registering the first and second volume data sets based on the unique spatial characteristic. The methods and systems allow registration of different volume data sets of the same anatomical structure and transfer of the additional spatial information without establishing a local reference frame based on predefined landmarks.
49 Citations
27 Claims
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1. A system for collecting and manipulating a volume data set of an anatomical structure, the system comprising:
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an imaging device for obtaining a first volume data set of an anatomical structure of a patient and a second volume data set of the anatomical structure; and a computer comprising a processing unit and a memory unit, wherein the computer is configured to; calculate an inherent feature of the first volume data set and the second volume data set, wherein the inherent feature has a unique position and orientation in relation to the anatomical structure that can be identified from any reference position; assign a first arbitrary reference frame to the first volume data set and a second arbitrary reference frame to the second volume data set; correlate the inherent feature to the first arbitrary reference frame; associate additional spatial information with the first volume data set, wherein the additional spatial information has a unique spatial relationship correlated with the first arbitrary reference frame; register the first volume data set with the second volume data set based on the inherent feature; and correlate the additional spatial information to the second volume data set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for establishing a position of a portion of a bone that has been altered from a normal shape, the system comprising:
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an imaging device to collect a first volume data set for a first bone that is unaltered and to collect a second volume data set of a first portion of a second bone, wherein the first volume data set includes volume data for first and second portions of the first bone; and a computer comprising a processing unit and a memory unit, wherein the computer is configured to; identify a first unique spatial characteristic of the volume data for the first portion of the first bone; establish a first arbitrary reference frame for the first volume data set correlated with the first unique spatial characteristic; identify a unique spatial relation between the first arbitrary reference frame and the second portion of the first bone; identify the second bone that normally mirrors the first bone about a centerline, wherein the second bone includes the first portion and a second portion that correspond as substantially mirror structures to the first and second portions of the first bone, respectively, and wherein the second bone has been altered from a normal shape such that the first portion of the second bone is in an altered position with regard to the second portion of the second bone; identify a second unique spatial characteristic of the second volume data set, wherein the second unique spatial characteristic substantially mirrors the first unique spatial characteristic; register in mirrored correlation the first volume data set with the second volume data by correlating the first unique spatial characteristic with the second unique spatial characteristic; and re-establish the normal position of the second portion of the second bone to coincide with the position of the second portion of the first bone as related to the registered position of the first portion of the first bone. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for registering information associated with a first data set of an anatomical structure to a second data set of the anatomical structure, the system comprising:
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an imaging device to collect the first data set of the anatomical structure and the second data set of the anatomical structure; a computer comprising a processing unit and a memory unit, wherein the computer is configured to; develop additional information for the first data set, wherein the additional information has a unique identifiable spatial relationship to the anatomical structure of the first data set; establish a first arbitrary reference frame for the first data set, wherein the first arbitrary reference frame is established without reference to any pre-selected landmark on the anatomical structure and the first arbitrary reference frame has a unique spatial relationship to the first data set; establish a second arbitrary reference frame for the second data set; transform the first arbitrary reference frame to the second arbitrary reference frame by matching a unique spatial parameter of the first data set with the same unique spatial parameter of the second data set; and register the additional information with the second data set. - View Dependent Claims (17, 18, 19, 20)
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21. A surgical navigation system for associating spatial information related to a first volume data set of a first anatomical structure with a second volume data set of the first anatomical structure, the system comprising:
a data obtaining device, a computer, and a display device; wherein the data obtaining device is configured to; obtain the first volume data set of the first anatomical structure; obtain the second volume data set of the first anatomical structure; wherein the computer comprises a processing unit and a memory unit, wherein the computer is configured to; assign a first arbitrary reference frame to the first volume data set; calculate an inherent feature in the first volume data set, wherein the inherent feature has a unique position and orientation in relation to the first anatomical structure that can be identified from any reference position; correlate the inherent feature to the first arbitrary reference frame; associate additional spatial information with the first volume data set,
wherein the additional spatial information has a unique spatial relationship correlated with the first arbitrary reference frame;assign a second arbitrary reference frame to the second volume data set; identify the inherent feature in the second volume data set; correlate the inherent feature to the second arbitrary reference frame; register the first volume data set with the second volume data set based on the inherent feature; and correlate the additional spatial information to the second volume data set; wherein the display device is configured to display the additional spatial information in registration with the second volume data set on the display device. - View Dependent Claims (22, 23, 24, 25, 26, 27)
Specification