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Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming

Photoacoustic (PA) imaging has the potential to deliver non-invasive diagnostic information. However, skin tone differences bias PA target visualization, as the elevated optical absorption of melanated skin decreases optical fluence within the imaging plane and increases the presence of acoustic clu...

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Autores principales: Fernandes, Guilherme S.P., Uliana, João H., Bachmann, Luciano, Carneiro, Antonio A.O., Lediju Bell, Muyinatu A., Pavan, Theo Z.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10658615/
https://www.ncbi.nlm.nih.gov/pubmed/38021286
http://dx.doi.org/10.1016/j.pacs.2023.100555
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author Fernandes, Guilherme S.P.
Uliana, João H.
Bachmann, Luciano
Carneiro, Antonio A.O.
Lediju Bell, Muyinatu A.
Pavan, Theo Z.
author_facet Fernandes, Guilherme S.P.
Uliana, João H.
Bachmann, Luciano
Carneiro, Antonio A.O.
Lediju Bell, Muyinatu A.
Pavan, Theo Z.
author_sort Fernandes, Guilherme S.P.
collection PubMed
description Photoacoustic (PA) imaging has the potential to deliver non-invasive diagnostic information. However, skin tone differences bias PA target visualization, as the elevated optical absorption of melanated skin decreases optical fluence within the imaging plane and increases the presence of acoustic clutter. This paper demonstrates that short-lag spatial coherence (SLSC) beamforming mitigates this bias. PA data from the forearm of 18 volunteers were acquired with 750-, 810-, and 870-nm wavelengths. Skin tones ranging from light to dark were objectively quantified using the individual typology angle (ITA [Formula: see text]). The signal-to-noise ratio (SNR) of the radial artery (RA) and surrounding clutter were measured. Clutter was minimal (e.g., −16 dB relative to the RA) with lighter skin tones and increased to −8 dB with darker tones, which compromised RA visualization in conventional PA images. SLSC beamforming achieved a median SNR improvement of 3.8 dB, resulting in better RA visualization for all skin tones.
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spelling pubmed-106586152023-09-11 Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming Fernandes, Guilherme S.P. Uliana, João H. Bachmann, Luciano Carneiro, Antonio A.O. Lediju Bell, Muyinatu A. Pavan, Theo Z. Photoacoustics VSI:Clinical Optoacoustics coregistered with Ultrasound Photoacoustic (PA) imaging has the potential to deliver non-invasive diagnostic information. However, skin tone differences bias PA target visualization, as the elevated optical absorption of melanated skin decreases optical fluence within the imaging plane and increases the presence of acoustic clutter. This paper demonstrates that short-lag spatial coherence (SLSC) beamforming mitigates this bias. PA data from the forearm of 18 volunteers were acquired with 750-, 810-, and 870-nm wavelengths. Skin tones ranging from light to dark were objectively quantified using the individual typology angle (ITA [Formula: see text]). The signal-to-noise ratio (SNR) of the radial artery (RA) and surrounding clutter were measured. Clutter was minimal (e.g., −16 dB relative to the RA) with lighter skin tones and increased to −8 dB with darker tones, which compromised RA visualization in conventional PA images. SLSC beamforming achieved a median SNR improvement of 3.8 dB, resulting in better RA visualization for all skin tones. Elsevier 2023-09-11 /pmc/articles/PMC10658615/ /pubmed/38021286 http://dx.doi.org/10.1016/j.pacs.2023.100555 Text en © 2023 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle VSI:Clinical Optoacoustics coregistered with Ultrasound
Fernandes, Guilherme S.P.
Uliana, João H.
Bachmann, Luciano
Carneiro, Antonio A.O.
Lediju Bell, Muyinatu A.
Pavan, Theo Z.
Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming
title Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming
title_full Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming
title_fullStr Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming
title_full_unstemmed Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming
title_short Mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming
title_sort mitigating skin tone bias in linear array in vivo photoacoustic imaging with short-lag spatial coherence beamforming
topic VSI:Clinical Optoacoustics coregistered with Ultrasound
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10658615/
https://www.ncbi.nlm.nih.gov/pubmed/38021286
http://dx.doi.org/10.1016/j.pacs.2023.100555
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