Optoacoustic (OA, photoacoustic) imaging capitalizes on the low scattering of ultrasound
within biological tissues to provide optical absorption-based contrast with high resolution at …

Photoacoustic imaging is an emerging imaging modality that is based upon the
photoacoustic effect. In photoacoustic tomography (PAT), the induced acoustic pressure …

Significance: After three decades, more than 75,000 publications, tens of companies being
involved in its commercialization, and a global market perspective of about USD 1.5 billion …

The development of fast and accurate image reconstruction algorithms is a central aspect of
computed tomography. In this paper, we investigate this issue for the sparse data problem in …

In an inhomogeneously illuminated photoacoustic image, important information like vascular
geometry is not readily available, when only the initial pressure is reconstructed. To obtain …

Accurate image reconstruction is crucial for photoacoustic (PA) computed tomography
(PACT). Recently, deep learning has been used to reconstruct PA images with a supervised …

Several imaging modalities are available for investigation of the morphological, functional,
and molecular features of engineered tissues in small animal models. While research in …

Optoacoustic mesoscopy (OAM) retrieves anatomical and functional contrast in vivo at
depths not resolvable with optical microscopy. Recent progress on reconstruction algorithms …

In this paper, we consider linear ill-posed problems in Hilbert spaces and their regularization
via frame decompositions, which are generalizations of the singular-value decomposition. In …

In this paper, we consider the parameter identification problem of partial differential
equations with constraints. A nonlinear multigrid method is introduced to the process of …