Patent
Apparatus and method for phased subarray imaging
TLDR
In this article, a transducer array is subdivided into subarrays, each subarray having a number of adjacent array elements, and the low-beam-rate beams formed from each sub-array are upampled and interpolated prior to forming high-beam rate images.Abstract:
An invention for coherent array image formation and restoration is taught. The invention is applicable for both 2D and 3D imaging using either 1D or 2D arrays, respectively. A transducer array is subdivided into subarrays, each subarray having a number of adjacent array elements. All elements of each subarray transmit and receive in parallel. The signals received from each subarray are delayed and summed to form scan lines, or beams. The low-beam-rate beams formed from each subarray are upsampled and interpolated prior to forming high-beam-rate images. Depending on the subarray geometry, a subarray-dependent restoration filter is also applied to the subarray beams. The restored beams from each subarray are combined to form the final high-beam-rate image. The invention significantly reduces the front-end hardware complexity compared to conventional methods such as full phased array imaging with comparable image quality.read more
Citations
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References
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Journal ArticleDOI
Capacitive micromachined ultrasonic transducers: next-generation arrays for acoustic imaging?
Omer Oralkan,Arif Sanli Ergun,J.A. Johnson,Mustafa Karaman,Utkan Demirci,K. Kaviani,Thomas H. Lee,Butrus T. Khuri-Yakub +7 more
TL;DR: The first pulse-echo phased array B-scan sector images using a 128-element, one-dimensional (1-D) linear CMUT array is presented and preliminary investigations on the effects of crosstalk among array elements on the image quality are performed.
Patent
Multiple ultrasound image registration system, method and transducer
John A. Hossack,John W. Sliwa,Samuel H. Maslak,Edward A. Gardner,Gregory L. Holley,David J. Napolitano +5 more
TL;DR: In this article, the relative movement between respective frames of the image data is automatically estimated by a motion estimator, based on frames of data from the tracking arrays, and features of the target remain within the image planes of the tracking array.
Patent
Phased array acoustic systems with intra-group processors
Bernard J. Savord,Karl Thiele +1 more
TL;DR: In this article, a transducer array with a very large number of transducers and transducers array with many more transducers than beamformer channels is proposed for ultrasound imaging.
Patent
Beamforming methods and apparatus for three-dimensional ultrasound imaging using two-dimensional transducer array
TL;DR: In this article, a two-dimensional array of ultrasound transducer elements that define multiple subarrays, a transmitter for transmitting ultrasound energy into a region of interest with transmit elements of the array, a subarray processor and a phase shift network associated with each of the subarray, a primary beamformer and an image generating circuit.
Patent
Method and apparatus for coherent image formation
TL;DR: In this paper, a transducer array is used for imaging an object using a transceiver array for transmitting one or more beams that are steered and/or translated to transmit scan lines for multiple excitation events.