Method and apparatus for measuring and compensating for subject motion during scanning
OwnerSteven Lowen, Carl Anderson +2inventors
InventorsSteven Lowen, Carl Anderson, Michael L. Rohan, Perry Renshaw
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Abstract
This invention provides independent measurement of and dynamic correction for subject movement while a scanning protocol is performed by updating the scanning protocol to compensate for this movement. This simple, easy-to-use, and cost-effective approach offers greater accuracy than previous methods. Using devices with cameras and integrated radiation sources, the invention is suitable for monitoring subject movement by detecting the reflection of the radiation from markers on the subject in real-time and performing dynamic correction for this movement.
Claims29
A system comprising:
- (a) a scanner that performs a scanning protocol on a subject;
- (b) two or more devices each comprising cameras and integrated sources of radiation that transmit radiation incident on three or more markers on the subject and detect the radiation reflected by the markers;
- and
- (c) a processor that processes data based on the radiation detected by the cameras and communicates with the scanner to update the scanning protocol to compensate for movement of the subject.
A method of compensating for movement of a subject during scanning, the method comprising:
- (a) performing a scanning protocol on a subject;
- (b) detecting diffuse radiation reflected by three or more approximately spherical markers on the subject;
- and
- (c) processing data based on the radiation detected by the cameras and updating the scanning protocol to compensate for motion of the subject.
A system for updating a scanning protocol performed by a scanner on a subject to compensate for movement by the subject, comprising:
- (a) two or more devices each comprising cameras and integrated sources of radiation that transmit radiation incident on three or more markers on the subject and detect radiation reflected by the markers;
- and
- (b) a computer-readable medium having a program that is used by a processor to processes data based on the radiation detected by the cameras and communicate with the scanner to update the scanning protocol to compensate for motion of the subject.
A magnetic resonance system for updating a magnetic resonance imaging protocol to compensate for movement of a subject, comprising:
- (a) a magnetic resonance scanner that performs the magnetic resonance imaging protocol on the subject;
- (b) two cameras that detect pulsed infrared radiation emitted by light-emitting diodes that is reflected by at least three spherical markers on the subject;
- and
- (c) a processor that processes data based on the infrared radiation detected by the cameras and communicates with the magnetic resonance scanner to update the magnetic resonance imaging protocol to compensate for movement of the subject.
Dependencies are inferred from the claim text.