Intrinsic detection of motion in segmented sequences
First Claim
Patent Images
1. An imaging system comprising:
- data acquisition logic configured to receive raw image data;
error detection logic configured to analyze correlation between a plurality of image scans within said raw image data and calculate an error function due to motion between said plurality of image scans; and
a processor configured to determine, based on said error function, whether corrupt data is present in a particular image scan of said raw image data; and
to instruct a transducer device to reacquire a new image scan of said particular image scan responsive to a determination that corrupt data is present in said particular image scan of raw image data.
3 Assignments
0 Petitions
Accused Products
Abstract
A self-navigating technique designed to detect motion in segmented sequences is disclosed. Certain embodiments compare a plurality of segments containing adjacent sets of k-space lines and produce an aliased error function which corresponds to a correlation of the segments. A global shift of the aliased error function may indicate the presence of in-plane rigid-body translation while other types of motion are evident in the dispersion or breadth of the error function. Some embodiments may then replace motion corrupted data with reacquired data. Further, some embodiments may correct or remove corrupted data retrospectively.
32 Citations
22 Claims
-
1. An imaging system comprising:
- data acquisition logic configured to receive raw image data;
error detection logic configured to analyze correlation between a plurality of image scans within said raw image data and calculate an error function due to motion between said plurality of image scans; and
a processor configured to determine, based on said error function, whether corrupt data is present in a particular image scan of said raw image data; and
to instruct a transducer device to reacquire a new image scan of said particular image scan responsive to a determination that corrupt data is present in said particular image scan of raw image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- data acquisition logic configured to receive raw image data;
-
9. A method to compensate for motion of a subject being imaged, said method comprising:
- receiving image acquisition data;
analyzing correlation information of said image acquisition data between a plurality of points in k-space;
calculating an error function due to motion corresponding to said correlation information;
determining, based at least on said error function, whether new image acquisition data is needed for a particular point in k-space;
receiving new image acquisition data for said particular point in k-space, wherein the new image acquisition data is received at least from a new scanning of a particular portion of the subject; and
reconstructing an image using said new image acquisition data. - View Dependent Claims (10, 11, 12, 13, 14)
- receiving image acquisition data;
-
15. A computer program product having a non-transitory computer readable media including instructions encoded thereon that, when executed, causes a processor to perform the operations of:
- receiving raw image data in k-space which includes a plurality of sequences, wherein at least one of said sequences are corrupted by motion of a portion of a subject being imaged;
analyzing a correlation between said at least one corrupted sequence and an adjacent sequence of said plurality of sequences;
calculating an error function corresponding to said correlation;
acquiring additional sequence data in k-space to replace at least one of said at least one corrupted sequence, wherein the additional sequence data is acquired from a new scanning of said portion of said subject that was involved in said motion; and
generating a reconstructed image which includes said additional sequence data. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
- receiving raw image data in k-space which includes a plurality of sequences, wherein at least one of said sequences are corrupted by motion of a portion of a subject being imaged;
Specification