Volume mechanical transducer for medical diagnostic ultrasound
First Claim
Patent Images
1. A transducer array for medical diagnostic ultrasound imaging, the transducer array comprising:
- a one-dimensional transducer array configured for transmit only operation or transmit and receive operation, the one-dimensional transducer array having, for transmit operation, a plurality of transmit elements distributed along an azimuth dimension with only a single row of the elements in an elevation dimension;
a multi-dimensional transducer array adjacent an elevation edge of the one-dimensional transducer array, the multi-dimensional transducer array configured for receive only operation, the multi-dimensional transducer array having N×
M receive elements distributed along the azimuth and elevation dimensions where N and M are both greater than one; and
a motor configured to move the one-dimensional and multi-dimensional transducer array together along the elevation direction.
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Abstract
A one-dimensional array is used for transmit operation, allowing connection with an imaging system for planar scanning and avoiding transmit electronics in the transducer array. A multi-dimensional array is used for reception only, avoiding transmit interconnects while providing greater coherence in elevation. Both arrays are moved to scan different planes, allowing acquisition of data representing a volume. This transducer arrangement may be used for scanning breasts for cancer screening.
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Citations
20 Claims
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1. A transducer array for medical diagnostic ultrasound imaging, the transducer array comprising:
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a one-dimensional transducer array configured for transmit only operation or transmit and receive operation, the one-dimensional transducer array having, for transmit operation, a plurality of transmit elements distributed along an azimuth dimension with only a single row of the elements in an elevation dimension; a multi-dimensional transducer array adjacent an elevation edge of the one-dimensional transducer array, the multi-dimensional transducer array configured for receive only operation, the multi-dimensional transducer array having N×
M receive elements distributed along the azimuth and elevation dimensions where N and M are both greater than one; anda motor configured to move the one-dimensional and multi-dimensional transducer array together along the elevation direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An ultrasound system for medical diagnostic ultrasound imaging, the system comprising:
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a transducer array comprising a two-dimensional transducer array having a first row of elements configured for transmit operation, the first row of elements distributed along an azimuth dimension with only a single row of the elements in an elevation dimension, and at least second and third rows of elements configured for receive only operation, the second and third rows of elements each abutting an elevation edge of the first row of elements; a guide arranged to translate the transducer array generally perpendicular to the first row; and a beamformer configured to transmit acoustic energy with the first row of elements and receive echo signals with the second and third rows of elements, repeated with the transducer array at different positions along the guide such that a volume is scanned, wherein the second and third rows of receive elements are each a multi-dimensional transducer array having N×
M receive elements distributed along the azimuth and elevation dimensions where N and M are both greater than one. - View Dependent Claims (13, 14, 15, 16)
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17. A method for medical diagnostic ultrasound imaging, the method comprising:
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transmitting a plurality of transmit beams in a plane with a one-dimensional array; receiving, in response to the transmitting, receive beams in the plane with a multi-dimensional array having N×
M receive elements distributed along azimuth and elevation dimensions where N and M are both greater than one, the multi-dimensional array abutting the one-dimensional array along an elevation edge and being free of connection with a transmit beamformer;mechanically moving the one-dimensional array and the multi-dimensional array; and repeating the transmitting and receiving at different positions of the one and multi-dimensional arrays. - View Dependent Claims (18, 19, 20)
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Specification