Theoretical and experimental study on the detection limit of the micro-ring resonator based ultrasound point detectors.

ABSTRACT: Combining the diffusive laser excitation and the photoacoustic signals detection, photoacoustic computed tomography (PACT) is uniquely suited for deep tissue imaging. A diffraction-limited ultrasound point detector is highly desirable for maximizing the spatial resolution and the field-of-view of the reconstructed volumetric images. Among all the available ultrasound detectors, micro-ring resonator (MRR) based ultrasound detectors offer the lowest area-normalized limit of detection (nLOD) in a miniature form-factor, making it an ideal candidate as an ultrasound point detector. However, despite their wide adoption for photoacoustic imaging, the underlying signal transduction process has not been systematically studied yet. Here we report a comprehensive theoretical model capturing the trans

SUBMITTER: Lee Y 

PROVIDER: S-EPMC10731384 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature