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• W4312111934 abstract "Photoacoustic (PA) imaging is a high-fidelity biomedical imaging technique based on the principle of molecular-specific optical absorption of biological tissue constitute. Because PA imaging shares the same basic principle as that of ultrasound (US) imaging, the use of PA/US dual-modal imaging can be achieved using a single system. However, because PA imaging is limited to a shallower depth than US imaging due to the optical extinction in biological tissue, the PA signal yields a lower signal-to-noise ratio (SNR) than US images. To selectively amplify the PA signal, we propose a switchable preamplifier for acoustic-resolution PA microscopy implemented on an application-specific integrated circuit. Using the preamplifier, we measured the increments in the SNR with both carbon lead and wire phantoms. Furthermore, in vivo whole-body PA/US imaging of a mouse with a preamplifier showed enhancement of SNR in deep tissues, unveiling deeply located organs and vascular networks. By selectively amplifying the PA signal range to a level similar to that of the US signal without contrast agent administration, our switchable amplifier strengthens the mutual complement between PA/US imaging. PA/US imaging is impending toward clinical translation, and we anticipate that this study will help mitigate the imbalance of image depth between the two imaging modalities." @default.
• W4312111934 created "2023-01-04" @default.
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• W4312111934 date "2022-12-07" @default.
• W4312111934 modified "2023-10-09" @default.
• W4312111934 title "Switchable preamplifier for dual modal photoacoustic and ultrasound imaging" @default.
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• W4312111934 doi "https://doi.org/10.1364/boe.476453" @default.
• W4312111934 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36698663" @default.
• W4312111934 hasPublicationYear "2022" @default.
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