Multi-Task Learning for Simultaneous Speed-of-Sound Mapping and Image Reconstruction Using Non-Contact Thermoacoustics

Singhvi, Ajay; Wanz, Max L.; Fitzpatrick, Aidan; Arbabian, Amin

doi:10.1109/ius52206.2021.9593748

Cited by 2 publications

(3 citation statements)

References 18 publications

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“…Future work will seek to further improve the proposed system by deploying CMUT arrays instead of single elements and improving image resolution by using multi-frequency CMUTs [20]. Dynamic measurements of live plants, with finer root structures [23] will also be conducted in a variety of soil types. Additional below-ground parameters of interest will be extracted and mapped to captured thermoacoustic signals and images.…”

Section: Discussionmentioning

confidence: 99%

“…1c. One such knob leverages the dependence of the speed of sound on soil moisture content [22] to create soil moisture profiles [23]. An ultrasonic detection mechanism also results in the proposed NCTA system outperforming GPR systems in terms of resolution as sound travels much slower than EM waves, with smaller acoustic wavelengths allowing us to resolve finer targets.…”

Section: B Ultrasound Detection Unitmentioning

confidence: 99%

See 1 more Smart Citation

A Thermoacoustic Imaging System for Noninvasive and Nondestructive Root Phenotyping

Singhvi

Fitzpatrick

Scharwies

et al. 2022

IEEE Trans. Circuits Syst. II

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Information about the root system architecture of plants is of great value in modern crop science. However, there is a dearth of tools that can provide field-scale measurements of below-ground parameters in a non-destructive and non-invasive fashion. In this paper, we propose a multi-modal, non-contact thermoacoustic sensing system to address this measurement gap and discuss various system design aspects in the context of belowground sensing. We also demonstrate the first thermoacoustic images of plant material (potatoes) in a soil medium, with the use of highly sensitive capacitive micromachined ultrasound transducers enabling non-contact detection and cm-scale image resolution. Finally, we show high correlation (adj. R 2 = 0.95) between the measured biomass content and the reconstructed thermoacoustic images of the potato tubers.

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Section: Discussionmentioning

confidence: 99%

Section: B Ultrasound Detection Unitmentioning

confidence: 99%

A Thermoacoustic Imaging System for Noninvasive and Nondestructive Root Phenotyping

Singhvi

Fitzpatrick

Scharwies

et al. 2022

IEEE Trans. Circuits Syst. II

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, joint correction approaches were proposed to simultaneously extract optical absorption information and SOS distribution [90][91][92][93][94]. As shown in Figure 10B, Cai et al [90] proposed a method to jointly reconstruct the SOS and PAT image.…”

Section: Acoustic Correctionmentioning

confidence: 99%

Advanced Image Post-Processing Methods for Photoacoustic Tomography: A Review

et al. 2023

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Photoacoustic tomography (PAT) is a promising imaging technique that utilizes the detection of light-induced acoustic waves for both morphological and functional biomedical imaging. However, producing high-quality images using PAT is still challenging and requires further research. Besides improving image reconstruction, which turns the raw photoacoustic signal into a PAT image, an alternative way to address this issue is through image post-processing, which can enhance and optimize the reconstructed PAT image. Image post-processing methods have rapidly emerged in PAT and are proven to be essential in improving image quality in recent research. In this review, we investigate the need for image post-processing in PAT imaging. We conduct a thorough literature review on the latest PAT image post-processing articles, including both general and PAT-specific post-processing techniques. In contrast to previous reviews, our analysis focuses specifically on advanced image post-processing rather than image reconstruction methods. By highlighting their potential applications, we hope to encourage further research and development in PAT image post-processing technology.

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Multi-Task Learning for Simultaneous Speed-of-Sound Mapping and Image Reconstruction Using Non-Contact Thermoacoustics

Cited by 2 publications

References 18 publications

A Thermoacoustic Imaging System for Noninvasive and Nondestructive Root Phenotyping

A Thermoacoustic Imaging System for Noninvasive and Nondestructive Root Phenotyping

Advanced Image Post-Processing Methods for Photoacoustic Tomography: A Review

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