A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries
Geometric calibration of ultrasound transducer arrays is critical to optimizing the performance of photoacoustic computed tomography (PACT) systems. We present a geometric calibration method that is applicable to a wide range of PACT systems. We obtain the speed of sound and point source locations u...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-08-01
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| Series: | Photoacoustics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213597923000733 |
| _version_ | 1797731016416165888 |
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| author | Karteekeya Sastry Yang Zhang Peng Hu Yilin Luo Xin Tong Shuai Na Lihong V. Wang |
| author_facet | Karteekeya Sastry Yang Zhang Peng Hu Yilin Luo Xin Tong Shuai Na Lihong V. Wang |
| author_sort | Karteekeya Sastry |
| collection | DOAJ |
| description | Geometric calibration of ultrasound transducer arrays is critical to optimizing the performance of photoacoustic computed tomography (PACT) systems. We present a geometric calibration method that is applicable to a wide range of PACT systems. We obtain the speed of sound and point source locations using surrogate methods, which results in a linear problem in the transducer coordinates. We characterize the estimation error, which informs our choice of the point source arrangement. We demonstrate our method in a three-dimensional PACT system and show that our method improves the contrast-to-noise ratio, the size, and the spread of point source reconstructions by 80±19%, 19±3%, and 7±1%, respectively. We reconstruct the images of a healthy human breast before and after calibration and find that the calibrated image reveals vasculatures that were previously invisible. Our work introduces a method for geometric calibration in PACT and paves the way for improving PACT image quality. |
| first_indexed | 2024-03-12T11:53:38Z |
| format | Article |
| id | doaj.art-54c55d31189b459bb2b500c82a42a7cc |
| institution | Directory Open Access Journal |
| issn | 2213-5979 |
| language | English |
| last_indexed | 2024-03-12T11:53:38Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Photoacoustics |
| spelling | doaj.art-54c55d31189b459bb2b500c82a42a7cc2023-08-31T05:02:42ZengElsevierPhotoacoustics2213-59792023-08-0132100520A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometriesKarteekeya Sastry0Yang Zhang1Peng Hu2Yilin Luo3Xin Tong4Shuai Na5Lihong V. Wang6Caltech Optical Imaging Laboratory, Department of Electrical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA; Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USACaltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USACaltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USACaltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USACaltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USACaltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USACaltech Optical Imaging Laboratory, Department of Electrical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA; Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA; Corresponding author at: Caltech Optical Imaging Laboratory, Department of Electrical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA.Geometric calibration of ultrasound transducer arrays is critical to optimizing the performance of photoacoustic computed tomography (PACT) systems. We present a geometric calibration method that is applicable to a wide range of PACT systems. We obtain the speed of sound and point source locations using surrogate methods, which results in a linear problem in the transducer coordinates. We characterize the estimation error, which informs our choice of the point source arrangement. We demonstrate our method in a three-dimensional PACT system and show that our method improves the contrast-to-noise ratio, the size, and the spread of point source reconstructions by 80±19%, 19±3%, and 7±1%, respectively. We reconstruct the images of a healthy human breast before and after calibration and find that the calibrated image reveals vasculatures that were previously invisible. Our work introduces a method for geometric calibration in PACT and paves the way for improving PACT image quality.http://www.sciencedirect.com/science/article/pii/S2213597923000733Photoacoustic imagingUltrasound transducer arraysGeometric calibrationPosition estimation |
| spellingShingle | Karteekeya Sastry Yang Zhang Peng Hu Yilin Luo Xin Tong Shuai Na Lihong V. Wang A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries Photoacoustics Photoacoustic imaging Ultrasound transducer arrays Geometric calibration Position estimation |
| title | A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries |
| title_full | A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries |
| title_fullStr | A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries |
| title_full_unstemmed | A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries |
| title_short | A method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries |
| title_sort | method for the geometric calibration of ultrasound transducer arrays with arbitrary geometries |
| topic | Photoacoustic imaging Ultrasound transducer arrays Geometric calibration Position estimation |
| url | http://www.sciencedirect.com/science/article/pii/S2213597923000733 |
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