Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fast Three-dimensional Opto-acoustic Simulation for Linear Array with
  Rectangular Elements   Simulation involves predicting responses of a physical system. In this
article, we simulate opto-acoustic signals generated in a three-dimensional
volume due to absorption of an optical pulse. A separable computational model
is developed that permits an order-of-magnitude improvement in computational
efficiency over a non-separable model. The simulated signals represent acoustic
waves, measured by a probe with a linear transducer array, in a rotated and
translated coordinate frame. Light is delivered by an optical source that moves
with the probe's frame. A spatio-temporal impulse response for rectangular
element transducer geometry is derived using a Green's function solution to the
acoustic wave equation. The approach permits fast and accurate simulation for a
probe with arbitrary trajectory. For a 3D volume of $n^3$ voxels, computation
is accelerated by a factor of $n$. This may potentially have application for
opto-acoustic imaging, where clinicians visualize structural and functional
features of biological tissue for assessment of cancer and other diseases.

7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn