Systems, devices, and methods for tracking and compensating for patient motion during a medical imaging scan
First Claim
1. A motion compensation system for tracking and compensating for patient motion during a medical imaging scan, the motion compensation system comprising:
- an optical marker comprising an optically visible pattern, the optical marker configured to be attached to an object being tracked, the optically visibly pattern comprising one or more reference points surrounded by a plurality of concentric elliptical shapes defining each of the one or more reference points;
a first optical detector configured to generate a first digital image of the optically visible pattern;
a second optical detector configured to generate a second digital image of the optically visible pattern;
a tracking engine configured to determine a pose of the object in six degrees of freedom by analyzing the first and second images; and
a controller interface configured to generate tracking information based on the pose and to electronically transmit the tracking information to a scanner controller to enable compensation within a medical imaging scanner for object motion,wherein the first optical detector and the second optical detector are attached to a head coil configured to be used in conjunction with the medical imaging scanner,wherein the tracking engine and controller interface comprise a computer processor and an electronic storage medium.
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Accused Products
Abstract
A motion compensation system for tracking and compensating for patient motion during a medical imaging scan comprises an optical marker comprising an optically visible pattern and a mounting portion; a first optical detector positioned to digitally image the optically visible pattern along a first line of sight; a second optical detector positioned to digitally image the optically visible pattern along a second line of sight; a tracking engine configured to determine a pose of the object in six degrees of freedom by analyzing images from the first and second optical detectors; and a controller interface configured to generate tracking information based on the pose and to electronically transmit the tracking information to a scanner controller to enable compensation within a medical imaging scanner for object motion.
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Citations
20 Claims
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1. A motion compensation system for tracking and compensating for patient motion during a medical imaging scan, the motion compensation system comprising:
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an optical marker comprising an optically visible pattern, the optical marker configured to be attached to an object being tracked, the optically visibly pattern comprising one or more reference points surrounded by a plurality of concentric elliptical shapes defining each of the one or more reference points; a first optical detector configured to generate a first digital image of the optically visible pattern; a second optical detector configured to generate a second digital image of the optically visible pattern; a tracking engine configured to determine a pose of the object in six degrees of freedom by analyzing the first and second images; and a controller interface configured to generate tracking information based on the pose and to electronically transmit the tracking information to a scanner controller to enable compensation within a medical imaging scanner for object motion, wherein the first optical detector and the second optical detector are attached to a head coil configured to be used in conjunction with the medical imaging scanner, wherein the tracking engine and controller interface comprise a computer processor and an electronic storage medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer-implemented method for tracking and compensating for subject motion during a medical imaging scan, the computer-implemented method comprising:
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attaching an optical marker to an object being tracked, wherein the optical marker comprises an optically visibly pattern, the optically visibly pattern comprising one or more reference points surrounded by a plurality of concentric elliptical shapes defining each of the one or more reference points; generating, by a first optical detector, a first digital image of the optically visible pattern, wherein the first optical detector is attached to a head coil configured to be used in conjunction with a medical imaging scanner; generating, by a second optical detector, a second digital image of the optically visible pattern, wherein the second optical detector is attached to the head coil; determining, by a computer system, a pose of the object in six degrees of freedom by analyzing the first and second images; generating, by the computer system, tracking information based on the pose; and electronically transmitting, by the computer system, the tracking information to a scanner controller to enable compensation within the medical imaging scanner for object motion, wherein the computer system comprises a computer processor and an electronic storage medium. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification