SYSTEM AND METHOD FOR ULTRASOUND COLOR DOPPLER IMAGING
First Claim
1. An ultrasound imaging system, comprising:
- color Doppler imaging circuitry configured to estimate flow parameters, the imaging circuitry comprising;
a radio frequency (“
RF”
) demodulator configured to produce in-phase and quadrature components of an ultra-sound data vector;
wherein the radio frequency demodulator includes a table in memory storing interleaved sine and cosine values, and the radio frequency demodulator maintains an index value for the table having higher precision than is used to index the table, and rounds the index value for each access of the table, each table access retrieving a sine value and a cosine value.
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Abstract
Systems and methods for color Doppler imaging in an ultrasound imaging system are disclosed herein. An ultrasound imaging system includes color Doppler imaging circuitry. The color Doppler imaging circuitry is configured to estimate flow parameters. The imaging circuitry includes a radio frequency (“RF”) demodulator configured to produce in-phase and quadrature components of an ultra-sound data vector. The RF demodulator includes a table in memory that stores interleaved sine and cosine values. The RF demodulator maintains an index value for the table having higher precision than is used to index the table. The RF demodulator rounds the index value for each access of the table. Each table access retrieves a sine value and a cosine value.
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Citations
26 Claims
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1. An ultrasound imaging system, comprising:
color Doppler imaging circuitry configured to estimate flow parameters, the imaging circuitry comprising; a radio frequency (“
RF”
) demodulator configured to produce in-phase and quadrature components of an ultra-sound data vector;wherein the radio frequency demodulator includes a table in memory storing interleaved sine and cosine values, and the radio frequency demodulator maintains an index value for the table having higher precision than is used to index the table, and rounds the index value for each access of the table, each table access retrieving a sine value and a cosine value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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fetching from ultrasound imaging system memory, in a single memory access cycle, a plurality of Wall filter coefficients; applying the plurality Wall filter coefficients to a plurality of complex ultrasound data values in a single execution cycle; and providing Wall filtered ultrasound data to a flow estimator. - View Dependent Claims (12, 13, 14, 15)
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16. An ultrasound color Doppler imaging system, comprising:
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a processor; and a software system for color Doppler imaging executed by the processor; wherein the software system comprises instructions that when executed cause the processor to convert real radio frequency (“
RF”
) ultrasound samples to complex RF ultrasound samples using sine and cosine values stored in adjacent memory locations. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A color Doppler imaging system, comprising:
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circuitry that computes a sum of powers of a first ensemble and a sum of power of a second ensemble; circuitry that stores the sum of powers of the first ensemble and the sum of powers of the second ensemble in memory; circuitry that retrieves the sum of powers of the first ensemble and the sum of powers of the second ensemble from memory and computes a flow power parameter using the retrieved sums of powers. - View Dependent Claims (25, 26)
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Specification