Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parallel MRI Reconstruction by Convex Optimization   In parallel magnetic resonance imaging (pMRI), to find a joint solution for
the image and coil sensitivity functions is a nonlinear and nonconvex problem.
A class of algorithms reconstruct sensitivity encoded images of the coils first
followed by the magnitude only image reconstruction, e.g. GRAPPA. It is shown
in this paper that, if only the magnitude image is reconstructed, there exists
a convex solution space for the magnitude image and sensitivity encoded images.
This solution space enables formulation of a regularized convex optimization
problem and leads to a globally optimal and unique solution for the magnitude
image reconstruction. Its applications to in-vivo MRI data sets result in
superior reconstruction performance compared with other algorithms.

22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th