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15 March 2019 High SNR emission method with virtual point source in ultrasound computed tomography
Wenjing Wu, Yushi Tsubota, Atsuro Suzuki, Kazuhiro Yamanaka, Takahide Terada, Kenichi Kawabata, Hiroko Yamashita, Fumi Kato, Mutsumi Nishida, Megumi Satoh
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Proceedings Volume 10955, Medical Imaging 2019: Ultrasonic Imaging and Tomography; 109550I (2019) https://doi.org/10.1117/12.2506954
Event: SPIE Medical Imaging, 2019, San Diego, California, United States
Abstract
Ultrasound Computed Tomography is a very promising medical imaging technology to be used to discover breast cancer early. The conventional ultrasound emission method (fan beam), which utilizes a single element for one emission, might result in a signal-to-noise ratio (SNR) too low for measuring dense breasts. This research proposes a virtual fan emission method that can maintain high accuracy, a large field of view, and a high SNR at the same time, using multiple elements while mimicking the wave field of single element emission. We experimentally proved its effectiveness in improving SNR by imaging a phantom with high attenuation to mimic a dense breast. Imaging of excised human breast tissues also suggested that the proposed virtual fan beam emission is more effective than conventional fan beam emission to screen for breast cancer correctly.
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Wenjing Wu, Yushi Tsubota, Atsuro Suzuki, Kazuhiro Yamanaka, Takahide Terada, Kenichi Kawabata, Hiroko Yamashita, Fumi Kato, Mutsumi Nishida, and Megumi Satoh "High SNR emission method with virtual point source in ultrasound computed tomography", Proc. SPIE 10955, Medical Imaging 2019: Ultrasonic Imaging and Tomography, 109550I (15 March 2019); https://doi.org/10.1117/12.2506954
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KEYWORDS
Signal to noise ratio
Virtual point source
Computed tomography
Breast cancer
Ultrasound tomography
Ultrasound transmission tomography
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