SYSTEMS, DEVICES, AND METHODS FOR TRACKING AND COMPENSATING FOR PATIENT MOTION DURING A MEDICAL IMAGING SCAN

• US 20170143271A1
• Filed: 11/18/2016
• Published: 05/25/2017
• Est. Priority Date: 11/23/2015
• Status: Active Grant

• Current Assignee: KinetiCor, Inc.
• Original Assignee: KinetiCor, Inc.
• Inventors: Gustafsson, Ulf Peter, Dreher, Andreas Wilhelm
• Granted Patent: US 10,716,515 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2560/0406 specially shaped apparatus housings
• CPC Class Codes: A61B 2560/0443 Modular apparatus
• CPC Class Codes: A61B 2562/182 Electrical shielding, e.g. using a Faraday cage
• CPC Class Codes: A61B 5/055 involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• CPC Class Codes: A61B 5/1114 Tracking parts of the body
• CPC Class Codes: A61B 5/1127 using markers
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61B 5/721 using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured
• CPC Class Codes: A61N 2005/1059 using cameras imaging the patient
• CPC Class Codes: A61N 5/1049 for verifying the position of the patient with respect to the radiation beam
• CPC Class Codes: A61N 5/1067 in real time, i.e. during treatment
• CPC Class Codes: G01R 33/283 Intercom or optical viewing arrangements, structurally associated with NMR apparatus
• CPC Class Codes: G01R 33/56509 due to motion, displacement or flow, e.g. gradient moment nulling G01R33/567 takes precedence

Abstract

In some embodiments, a motion detection and correction system and/or device for tracking and compensating for patient motion during a medical imaging scan can be adapted to be integrated into a medical imaging scanner, such as an MRI scanner, or be adapted to retrofit a pre-existing medical imaging scanner. In certain embodiments, the motion detection system and/or device can comprise one or more mounting brackets and a motion correction device housing, which can further comprise one or more detector modules and a power unit. In further embodiments, the collected motion data can be further analyzed by an image processing unit of the motion tracking and/or correction system.

Claims

1. A motion correction device for a medical imaging scanner, the device comprising:

a device housing, wherein the device housing comprises an arcuate surface, and wherein the device housing comprises;

one or more optics openings on the arcuate surface;

one or more detectors configured to detect motion of a subject of the medical imaging scanner through the one or more optics openings, wherein each of the one or more detectors further comprises;

a detector housing; and

a sensor module placed within the detector housing, wherein the sensor module is configured to be removably coupled to the detector module housing;

a power unit configured to regulate power to the one or more detectors; and

one or more wires configured to connect the one or more detectors to the power unit,

wherein the device housing is configured to be removably coupled to a top inner surface of a bore of the medical imaging scanner.

2. The motion correction device of claim 1, wherein the device is configured to be removably coupled to a plurality of medical imaging scanners, wherein each of the plurality of medical imaging scanners comprises a bore of a different size.

3. The motion correction device of claim 1, wherein the device is configured to detect motion of the subject of the medical imaging scanner and transmit the detected motion to a motion tracking system for processing the detected motion.

4. The motion correction device of claim 1, wherein the device is configured to be removed and reattached to the medical imaging scanner without losing alignment of the one or more detectors.

5. The motion correction device of claim 1, wherein the one or more optics openings comprises indium tin oxide coated glass.

6. The motion correction device of claim 1, wherein the one or more optics openings protrude from the arcuate surface at an angle.

7. The motion correction device of claim 1, wherein the device housing further comprises one or more radiofrequency chokes.

8. The motion correction device of claim 1, wherein the device housing further comprises one or more mounting clips, wherein the one or more mounting clips are configured to be removably attached to a mounting bracket, wherein the mounting bracket is attached to the top inner surface of the bore.

9. The motion correction device of claim 1, wherein the detector housing is flash plated with a material configured to delay oxidation.

10. The motion correction device of claim 1, wherein the detector housing comprises a top cover and a bottom cover, wherein the top cover comprises one or more non-parallel walls to eliminate standing waves.

11. The motion correction device of claim 10, wherein the top cover comprises nickel.

12. The motion correction device of claim 1, wherein the sensor module comprises an imaging sensor, an optics module, and a light source.

13. The motion correction device of claim 12, wherein the optics module comprises a sensor and an optics.

14. The motion correction device of claim 12, wherein the optics is mechanically fixated within the optics module.

15. The motion correction device of claim 13, wherein the optics is placed within the optics module in a longitudinal direction of the optics module.