Method and system for estimating three-dimensional respiratory motion
First Claim
1. A method for determining the motion of an organ, comprising the steps of:
- acquiring a first set of one-dimensional motion data for an organ along a first axis by a first methodology;
acquiring a second set of one-dimensional motion data for the organ along a second axis by a second methodology, wherein the first axis and the second axis are perpendicular;
acquiring a third set of one-dimensional motion data for the organ along a third axis by a third methodology, wherein the third axis is perpendicular to the first axis and the second axis;
deriving one or more concurrent motion vectors from each of the first, second, and third sets of one-dimensional motion data; and
combining the one or more concurrent motion vectors to generate a set of three-dimensional motion data for the organ.
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Accused Products
Abstract
One or more techniques are provided for measuring the motion of an organ in three dimensions. As provided by the technique, the motion of the organ along each dimension may be determined by a suitable methodology. Where sensor-based motion measurements are suitable, one or more sensors may be placed on a patient to measure internal motion of the organ of interest along one or more perpendicular axes. Where image-based techniques are suitable, the motion of the internal organ along a perpendicular axis may determined using pre-acquisition image data or acquisition image data when suitable. Concurrent motion vectors for all three dimensions may be obtained from the motion data acquired for the perpendicular axes by the disparate methodologies. The concurrent motion vectors may be combined to describe the three-dimensional motion of the organ over time. Validation of the motion data may be performed for each of the one-dimensional motion data sets using motion data acquired by image-based methods, or other image-based methods, for a respective axis.
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Citations
42 Claims
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1. A method for determining the motion of an organ, comprising the steps of:
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acquiring a first set of one-dimensional motion data for an organ along a first axis by a first methodology;
acquiring a second set of one-dimensional motion data for the organ along a second axis by a second methodology, wherein the first axis and the second axis are perpendicular;
acquiring a third set of one-dimensional motion data for the organ along a third axis by a third methodology, wherein the third axis is perpendicular to the first axis and the second axis;
deriving one or more concurrent motion vectors from each of the first, second, and third sets of one-dimensional motion data; and
combining the one or more concurrent motion vectors to generate a set of three-dimensional motion data for the organ. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer program, provided on one or more computer readable media, for determining the motion of an organ, comprising:
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a routine for acquiring a first set of one-dimensional motion data for an organ along a first axis by a first methodology;
a routine for acquiring a second set of one-dimensional motion data for the organ along a second axis by a second methodology, wherein the first axis and the second axis are perpendicular;
a routine for acquiring a third set of one-dimensional motion data for the organ along a third axis by a third methodology, wherein the third axis is perpendicular to the first axis and the second axis;
a routine for deriving one or more concurrent motion vectors from each of the first, second, and third sets of one-dimensional motion data; and
a routine for combining the one or more concurrent motion vectors to generate a set of three-dimensional motion data for the organ. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An imaging system, comprising,
an imager configured to generate a plurality of signals representative of one or more structures within a region of interest; -
a sensor-based motion determination system configured to acquire one-dimensional motion data from one or more sensors;
data acquisition circuitry configured to acquire the plurality of signals;
data processing circuitry configured to process the plurality of signals;
system control circuitry configured to operate at least one of the imager and the data acquisition circuitry; and
an operator workstation configured to communicate with the system control circuitry and to receive the processed plurality of signals from the data processing circuitry;
wherein at least one of the imager and the sensor-based motion determination system are configured to acquire a first, a second, and a third set of one-dimensional motion data for an organ along respective first, second, and third respective perpendicular axes; and
wherein at least one of the sensor-based motion determination system, the data processing circuitry, and the operator workstation are configured to derive one or more concurrent motion vectors from each of the first, second, and third sets of one-dimensional motion data and to combine the one or more concurrent motion vectors to generate a set of three-dimensional motion data for the organ. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An imaging system, comprising,
an imager configured to generate a plurality of signals representative of one or more structures within a region of interest and to acquire at least one set of acquisition image data used to derive a first, a second, and a third set of one-dimensional motion data for an organ along respective first, second, and third respective perpendicular axes; -
data acquisition circuitry configured to acquire the plurality of signals;
data processing circuitry configured to process the plurality of signals;
system control circuitry configured to operate at least one of the imager and the data acquisition circuitry; and
an operator workstation configured to communicate with the system control circuitry and to receive the processed plurality of signals from the data processing circuitry; and
wherein at least one of the data processing circuitry and the operator workstation are configured to derive one or more concurrent motion vectors from each of the first, second, and third sets of one-dimensional motion data and to combine the one or more concurrent motion vectors to generate a set of three-dimensional motion data for the organ. - View Dependent Claims (39, 40, 41)
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42. An imaging system, comprising:
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means for acquiring a first set of one-dimensional motion data for an organ along a first axis by a first methodology;
acquiring a second set of one-dimensional motion data for the organ along a second axis by a second methodology, wherein the first axis and the second axis are perpendicular;
acquiring a third set of one-dimensional motion data for the organ along a third axis by a third methodology, wherein the third axis is perpendicular to the first axis and the second axis;
deriving one or more concurrent motion vectors from each of the first, second, and third sets of one-dimensional motion data; and
combining the one or more concurrent motion vectors to generate a set of three-dimensional motion data for the organ.
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Specification