Now showing items 1-4 of 4
An efficient image formation algorithm for real-time linear-array photoacoustic tomography
In photoacoustic (PA) imaging using commercial ultrasound transducers, two dimensional PA images are pro-duced by commonly used delay-and-sum (DAS) as the reconstruction method. However, the reconstructed image is a ected ...
Fractional regularization to improve photoacoustic tomographic image reconstruction
Photoacoustic tomography involves reconstructing the initial pressure rise distribution from the measured acoustic boundary data. The recovery of the initial pressure rise distribution tends to be an ill-posed problem in ...
Photoacoustic imaging depth comparison at 532-, 800-, and 1064-nm wavelengths : Monte Carlo simulation and experimental validation
Photoacoustic imaging (PAI) provides high-resolution and high-optical-contrast imaging beyond optical diffusion limit. Further improvement in imaging depth has been achieved by using near-infrared window-I (NIR-I, 700 to ...
A robust modified delay-and-sum algorithm for photoacoustic tomography imaging with apodized sensors
Role of sensor sensitivity in photoacoustic tomography (PAT) imaging is discussed. In this study, sensitivity profile (apodization) of nite size sensors was considered as axisymmetric and modelled by using a Gaussian ...