Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dense Fiber Modeling for 3D-Polarized Light Imaging Simulations   3D-Polarized Light Imaging (3D-PLI) is a neuroimaging technique used to study
the structural connectivity of the human brain at the meso- and microscale. In
3D-PLI, the complex nerve fiber architecture of the brain is characterized by
3D orientation vector fields that are derived from birefringence measurements
of unstained histological brain sections by means of an effective physical
model.
  To optimize the physical model and to better understand the underlying
microstructure, numerical simulations are essential tools to optimize the used
physical model and to understand the underlying microstructure in detail. The
simulations rely on predefined configurations of nerve fiber models (e.g.
crossing, kissing, or complex intermingling), their physical properties, as
well as the physical properties of the employed optical system to model the
entire 3D-PLI measurement. By comparing the simulation and experimental
results, possible misinterpretations in the fiber reconstruction process of
3D-PLI can be identified. Here, we focus on fiber modeling with a specific
emphasize on the generation of dense fiber distributions as found in the human
brain's white matter. A new algorithm will be introduced that allows to control
possible intersections of computationally grown fiber structures.

30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an