Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fully Automatic Segmentation and Objective Assessment of Atrial Scars
  for Longstanding Persistent Atrial Fibrillation Patients Using Late
  Gadolinium-Enhanced MRI   Purpose: Atrial fibrillation (AF) is the most common cardiac arrhythmia and
is correlated with increased morbidity and mortality. It is associated with
atrial fibrosis, which may be assessed non-invasively using late
gadolinium-enhanced (LGE) magnetic resonance imaging (MRI) where scar tissue is
visualised as a region of signal enhancement. In this study, we proposed a
novel fully automatic pipeline to achieve an accurate and objective atrial
scarring segmentation and assessment of LGE MRI scans for the AF patients.
Methods: Our fully automatic pipeline uniquely combined: (1) a multi-atlas
based whole heart segmentation (MA-WHS) to determine the cardiac anatomy from
an MRI Roadmap acquisition which is then mapped to LGE MRI, and (2) a
super-pixel and supervised learning based approach to delineate the
distribution and extent of atrial scarring in LGE MRI. Results: Both our MA-WHS
and atrial scarring segmentation showed accurate delineations of cardiac
anatomy (mean Dice = 89%) and atrial scarring (mean Dice =79%) respectively
compared to the established ground truth from manual segmentation. Compared
with previously studied methods with manual interventions, our innovative
pipeline demonstrated comparable results, but was computed fully automatically.
Conclusion: The proposed segmentation methods allow LGE MRI to be used as an
objective assessment tool for localisation, visualisation and quantification of
atrial scarring.

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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: funct-an