Now showing items 1-6 of 6
Image guided filtering for improving photoacoustic tomographic image reconstruction
Several algorithms exist to solve the photoacoustic image reconstruction problem depending on the expected reconstructed image features. These reconstruction algorithms promote typically one feature, such as being smooth ...
Photoacoustic imaging of lamina cribrosa microcapillaries in porcine eyes
Due to the embedded nature of the lamina cribrosa (LC) microcapillary network, conventional imaging techniques have failed to obtain the high-resolution images needed to assess the perfusion state of the LC. In this study, ...
Accelerated image reconstruction using extrapolated Tikhonov filtering for photoacoustic tomography
Purpose: Development of simple and computationally efficient extrapolated Tikhonov filtering reconstruction methods for photoacoustic tomography. Methods: The model-based reconstruction algorithms in photoacoustic tomography ...
Efficient nonlinear beamformer based on P’th root of detected signals for linear-array photoacoustic tomography : application to sentinel lymph node imaging
In linear-array transducer-based photoacoustic (PA) imaging, B-scan PA images are formed using the raw channel PA signals. Delay-and-sum (DAS) is the most prevalent algorithm due to its simple implementation, but it leads ...
Eigenspace-based minimum variance combined with delay multiply and sum beamformer : application to linear-array photoacoustic imaging
In photoacoustic imaging (PA), delay-and-sum (DAS) algorithm is the most commonly used beamformer. However, it leads to a low resolution and high level of sidelobes. Delay-multiply-and sum (DMAS) was introduced to provide ...
Passive ultrasound aided acoustic resolution photoacoustic microscopy imaging for layered heterogeneous media
Photoacoustic imaging reconstructions usually assume a known speed-of-sound (SOS) distribution; however, in most cases, the SOS distribution is not revealed and is difficult to estimate from photoacoustic signals. In this ...