GENERALIZED DMAS ALGORITHM FOR IMPROVED ULTRASOUND IMAGING
Example embodiments of the present invention relate to a method and an apparatus for ultrasound imaging wherein transmitting elements of an ultrasonic array probe transmit ultrasound energy and receiving elements of the ultrasonic array probe receive received signals from the test object. The method includes deriving analytic signal values from the received signals, the analytic signal values being derived by applying a Hilbert transform to the received signals and performing a summation of multiple signal products derived by multiplication of a corresponding group of analytic signal values.
1 . A method of forming an ultrasound image comprising:
receiving ultrasonic response signals;
deriving analytic signal values from the received ultrasonic response signals according to a Hilbert transform; and
performing a summation of a plurality of multiple signal value products each derived according to a respective set of analytic signal values.
2 . The method of claim 1 wherein the corresponding set is a pair of the analytic signal values.
3 . The method of claim 1 wherein the corresponding set is a group of Q analytic signal values, where Q is an integer number.
4 . The method of claim 1 wherein the imaging method is a phased array ultrasound imaging method.
5 . The method of claim 1 wherein the imaging method is a total focusing method.
6 . The method of claim 1 wherein the summation further comprises summation of the signal product multiplied by a complex exponential of the phase of the signal product.
7 . An ultrasound imaging system comprising:
an acquisition unit configured to receive ultrasonic response signals;
an imaging unit configured to derive analytic signal values from the received ultrasonic response signals according to a Hilbert transform and perform a summation of a plurality of multiple signal value products each derived according to a respective set of analytic signal values.
8 . The system of claim 7 further comprising an ultrasonic probe configured to derive the signal value products according to a pair of analytic signal values.
9 . The system of claim 7 wherein the imaging unit is further configured to derive the signal value products according to Q analytic signal values, where Q is an integer number
10 . The system of claim 7 wherein the imaging unit is further configured to generate an image according to a total focusing method.
11 . The system of claim 7 wherein the imaging unit is further configured to multiply the signal product by a complex exponential of the phase of the signal product
12 . A computer program product having a non-transitory computer readable medium with computer program code stored thereon that, when executed on a processor, causes the process to forming an ultrasound image, the computer program code comprising:
computer program code for deriving analytic signal values from received ultrasonic response signals according to a Hilbert transform; and
computer program code for performing a summation of a plurality of multiple signal value products each derived according to a respective set of analytic signal values.