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3 March 2022 Transfontanelle thermoacoustic imaging characterization: simulation study
Md Tarikul Islam, Rayyan Manwar, James Lin, Danilo Erricolo, Kamran Avanaki
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Proceedings Volume 11960, Photons Plus Ultrasound: Imaging and Sensing 2022; 119600X (2022) https://doi.org/10.1117/12.2613029
Event: SPIE BiOS, 2022, San Francisco, California, United States
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Abstract
Thermoacoustic imaging (TAI) utilizes the advantages of excellent penetration depth and contrast of microwave energy and the high spatial resolution of ultrasound imaging. We evaluate the use of TAI for the detection of hemorrhage in the neonatal brain through fontanelle. We use a 3D human neonatal brain model, an antenna, and a linear array transducer in simulation to characterize the thermoacoustic signal and corresponding reconstructed images. All the characterizations are conducted using Computer Simulation Technology (CST) Studio Suite based on finite integration in technique (FIT). The absorbed electric field by the target and the time varying heating function data are reconstructed with a spatial resolution of 100 μm. To evaluate the impact of the applied microwave beam on the generated acoustic pressure wave, different pulse widths ranging from 0.01μs - 5μs at different frequencies from 1-3 GHz are tested. We also explore the impact of the type of antenna, by evaluating a horn antenna, a waveguide and a helical antenna.
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Md Tarikul Islam, Rayyan Manwar, James Lin, Danilo Erricolo, and Kamran Avanaki "Transfontanelle thermoacoustic imaging characterization: simulation study", Proc. SPIE 11960, Photons Plus Ultrasound: Imaging and Sensing 2022, 119600X (3 March 2022); https://doi.org/10.1117/12.2613029
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KEYWORDS
Brain
Microwave radiation
Neuroimaging
Tissues
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