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US 5,477,144 AGranted
Method for reducing image artifacts in magnetic resonance images acquired with synchronization to physiological cycles
AssigneeThe Johns Hopkins University
InventorWalter J. Rogers, Jr.
Life of this patent
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Abstract
A method for removing image artifacts in MRI created when data acquisition is synchronized to a physiological and therefore uneven intervals. The method simultaneously records both image data from the MRI scanner as well as the exact interval between each data acquisition. The image data is then modified according to the timing file to create a image data file free from signal variations and artifacts resulting from the uneven data sampling intervals.
Claims7
A method for removing artifacts in MRI, comprising the steps of:
- recording duration of a particular physiological cycle occurring between each phase encoding increment through image space;
- and,
- normalizing observed MRI signal intensity associated with each phase encoding increment to a calculated value in which a single repetition time (TR) value is used for the calculation of MRI signal intensity at every phase encoding increment.
Dependencies are inferred from the claim text.