Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Long range node-strut analysis of trabecular bone microarchitecture   Purpose: We present a new morphometric measure of trabecular bone
microarchitecture, called mean node strength (NdStr), which is part of a newly
developed approach called long range node-strut analysis. Our general aim is to
describe and quantify the apparent "latticelike" microarchitecture of the
trabecular bone network.
  Methods: Similar in some ways to the topological node-strut analysis
introduced by Garrahan et al. [J. Microsc. 142, 341-349 (1986)], our method is
distinguished by an emphasis on long-range trabecular connectivity. Thus, while
the topological classification of a pixel (after skeletonization) as a node,
strut, or terminus, can be determined from the 3x3 neighborhood of that pixel,
our method, which does not involve skeletonization, takes into account a much
larger neighborhood. In addition, rather than giving a discrete classification
of each pixel as a node, strut, or terminus, our method produces a continuous
variable, node strength. The node strength is averaged over a region of
interest to produce the mean node strength of the region.
  Results: We have applied our long range node-strut analysis to a set of 26
high-resolution ... The Nd/Tm ratios were computed using traditional
histomorphometry performed on bone biopsies obtained at the same location as
the pQCT scans.
  Conclusions: The newly introduced morphometric measure allows a quantitative
assessment of the long-range connectivity of trabecular bone. One advantage of
this method is that it is based on pQCT images that can be obtained
noninvasively from patients, i.e., without having to obtain a bone biopsy from
the patient.

8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs