Apparatus and system for real-time synthetic focus ultrasonic imaging
First Claim
1. An improved ultrasonic imaging system having a plurality of transmitter/receiver array elements configured to propagate a pulse of ultrasonic energy towards the surface of a sample, and to receive a return echo, the improvement comprising:
- a plurality of processing circuit sets, each of said plurality of processing circuit sets associated with one of the plurality of transmitter/receiver array elements;
wherein each of said plurality of processing circuit sets is configured to store a plurality of data values representative of a plurality of digitized ultrasonic return echoes received at an associated transmitter/receiver array element during discrete sample periods; and
wherein each of said plurality of processing circuit sets is further configured for parallel access to said stored plurality of data values during image generation.
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Abstract
An apparatus for use in an ultrasonic imaging system adapted for generating synthetic focus images in real-time. The apparatus employs an integrated circuit architecture which is scalable and can be employed to construct real-time synthetic focus ultrasonic imaging systems having a large number of transducer array elements. The apparatus utilizes one field programmable gate array per image channel for data storage and sub-image generation. Each field programmable gate array includes on-chip block memories to store digitized ultrasonic signal return echo data and at least one block memory used to store data associated with each ultrasonic transmitter-receiver array pair. Logic inside the field programmable gate array calculates memory addresses during image generation to generate a time-of-flight surface and to form sub-images.
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Citations
22 Claims
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1. An improved ultrasonic imaging system having a plurality of transmitter/receiver array elements configured to propagate a pulse of ultrasonic energy towards the surface of a sample, and to receive a return echo, the improvement comprising:
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a plurality of processing circuit sets, each of said plurality of processing circuit sets associated with one of the plurality of transmitter/receiver array elements;
wherein each of said plurality of processing circuit sets is configured to store a plurality of data values representative of a plurality of digitized ultrasonic return echoes received at an associated transmitter/receiver array element during discrete sample periods; and
wherein each of said plurality of processing circuit sets is further configured for parallel access to said stored plurality of data values during image generation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ultrasonic image processing architecture including:
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a plurality of ultrasonic transducers elements, each of said plurality of ultrasonic transducer elements including an ultrasonic transmitter and an ultrasonic receiver;
a plurality of analog-to-digital converters, each of said plurality of analog-to-digital converters operatively coupled to an associated ultrasonic transducer element in said plurality of ultrasonic transducer elements;
a plurality of image generation processors, each of said plurality of image generation processors having an input operatively coupled to an associated analog-to-digital converter in said plurality of analog-to-digital converters and an output; and
wherein each of said image generation processors further includes a memory configured to store a plurality of digitized image data sets received from said associated analog-to-digital converters, and a plurality of address generators configured to output memory address locations associated with each of said plurality of digitized image data sets. - View Dependent Claims (10, 11, 12)
wherein said output from each of a second non-exclusive set of said plurality of image generation processors is operatively connected to said second input of a next adjacent image generation processor of said first set;
wherein said output from a final image generation processor in said second set, having no next adjacent image generation processor, is an image pixel output;
wherein each of said plurality of image generator processors in said first non-exclusive set includes a summing component receiving input from said memory and from said second input, said summing component operatively coupled to said output.
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13. A method for ultrasonic imaging of a sample material including the steps of:
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propagating a pulse of ultrasonic energy towards the surface of the sample material from a single source;
receiving a plurality of return echoes at a plurality of points for a predetermined sample period;
digitizing each of said plurality of return echoes;
storing each of said digitized plurality of return echoes;
utilizing said stored digitized plurality of return echoes, together with at least one coefficient parameter, to generate a first ultrasonic image;
at least once, altering said at least one coefficient parameter and generating a second ultrasonic image utilizing said stored digitized plurality of return echoes together with said altered at least one coefficient parameter. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for generating an ultrasonic image of a sample material from an ultrasonic transducer array having a plurality of ultrasonic transmitter and receiver elements, including the steps of:
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pulsing, in a predetermined sequence, each of said plurality of ultrasonic transmitter elements;
receiving, at each of said plurality of ultrasonic receiver elements, an ultrasonic return echo data set for each of said pulses;
storing each of said received ultrasonic return echo data sets in a memory associated each of said plurality of ultrasonic receiver elements;
extracting in parallel, from each stored received ultrasonic return echo data set, an image pixel component;
combining each of said extracted image pixel components to generate a single image pixel in the ultrasonic image; and
repeating the steps of extracting and combining for a complete set of image pixels in the ultrasonic image. - View Dependent Claims (20, 21, 22)
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Specification