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@ARTICLE{Pawar:868442,
author = {Pawar, Kamlesh and Chen, Zhaolin and Shah, N. J. and Egan,
Gary. F.},
title = {{A} {D}eep {L}earning {F}ramework for {T}ransforming
{I}mage {R}econstruction {I}nto {P}ixel {C}lassification},
journal = {IEEE access},
volume = {7},
issn = {2169-3536},
address = {New York, NY},
publisher = {IEEE},
reportid = {FZJ-2020-00036},
pages = {177690 - 177702},
year = {2019},
abstract = {A deep learning framework is presented that transforms the
task of MR image reconstruction from randomly undersampled
k-space data into pixel classification. A DL network was
trained to remove incoherent undersampling artifacts from MR
images. The underlying, fully sampled, target image was
represented as a discrete quantized image. The quantization
step enables the design of a convolutional neural network
(CNN) that can classify each pixel in the input image to a
discrete quantized level. The reconstructed image quality of
the proposed DL classification model was compared with
conventional compressed sensing (CS) and a DL regression
model. The reconstructed images using the DL classification
model outperformed the state-of-the-art compressed sensing
and DL regression models with a similar number of parameters
assessed using quantitative measures. The experiments reveal
that the proposed deep learning method is robust to noise
and is able to reconstruct high-quality images in low SNR
scenarios where conventional CS reconstructions and DL
regression networks perform poorly. A generic design
framework for transforming MR image reconstruction into
pixel classification is developed. The proposed method can
be easily incorporated into other DL-based image
reconstruction methods.},
cin = {INM-4},
ddc = {621.3},
cid = {I:(DE-Juel1)INM-4-20090406},
pnm = {573 - Neuroimaging (POF3-573)},
pid = {G:(DE-HGF)POF3-573},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000509483800029},
doi = {10.1109/ACCESS.2019.2959037},
url = {https://juser.fz-juelich.de/record/868442},
}