Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dual-Mode Volumetric Optoacoustic and Contrast Enhanced Ultrasound
  Imaging with Spherical Matrix Arrays   Spherical matrix arrays arguably represent an advantageous tomographic
detection geometry for non-invasive deep tissue mapping of vascular networks
and oxygenation with volumetric optoacoustic tomography (VOT). Hybridization of
VOT with ultrasound (US) imaging remains difficult with this configuration due
to the relatively large inter-element pitch of spherical arrays. We suggest a
new approach for combining VOT and US contrast-enhanced imaging employing
injection of clinically-approved microbubbles. Power Doppler (PD) and US
localization imaging were enabled with a sparse US acquisition sequence and
model-based inversion based on infimal convolution of total variation (ICTV)
regularization. Experiments in tissue-mimicking phantoms and in vivo in mice
demonstrate the powerful capabilities of the new dual-mode imaging system for
blood velocity mapping and anatomical imaging with enhanced resolution and
contrast.

11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs