Patent ID: 8956299
Filing Date: 2015-02-17
Classification: A61B

Abstract:
1. A method for generating an ultrasound image, the method comprising: receiving an image frame comprising a plurality of consecutive ultrasound scan lines obtained using a rotating ultrasound imaging arrangement; determining at least a first cross-correlation value and a second cross-correlation value for each of a plurality of the scan lines, wherein, for each individual scan line of the plurality of scan lines, the first cross-correlation value comprising a cross-correlation coefficient between a first subframe comprising a plurality of consecutive scan lines including the individual scan line and a second subframe comprising a plurality of scan lines shifted from the first subframe by a first integer value, the second cross-correlation value comprising a cross-correlation coefficient between the first subframe and a third subframe comprising a plurality of scan lines shifted from the first subframe by a second integer value that is different from the first integer value, wherein the first and second integer values are positive integer values, wherein, for the image frame F(r,L) where L is a scan line in the imaging frame and r is a sample point of the scan line, the first subframe includes Δ evaluating, individually for multiple scan lines of the plurality of scan lines, whether the scan line being evaluated exhibits non-uniform rotation distortion using at least one of the first and second cross-correlation values for the scan line being evaluated; determining: a correction for non-uniform rotation distortion for at least one of the plurality of scan lines using at least one of the first and second cross-correlation values for at least one of the plurality of scan lines; generating the ultrasound image using at least the plurality of scan lines with the determined correction; and displaying the ultrasound image.