001     165907
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024 7 _ |a 10.1016/j.zemedi.2020.10.003
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024 7 _ |a 0040-5973
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024 7 _ |a 0939-3889
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024 7 _ |a 1876-4436
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037 _ _ |a DKFZ-2020-02464
041 _ _ |a eng
082 _ _ |a 610
100 1 _ |a Lachner, Sebastian
|b 0
245 _ _ |a Compressed sensing and the use of phased array coils in 23Na MRI: a comparison of a SENSE-based and an individually combined multi-channel reconstruction.
260 _ _ |a Amsterdam
|c 2021
|b Elsevier, Urban & Fischer45882
264 _ 1 |3 print
|2 Crossref
|b Elsevier BV
|c 2021-02-01
264 _ 1 |3 print
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|c 2021-02-01
336 7 _ |a article
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336 7 _ |a ARTICLE
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336 7 _ |a Journal Article
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500 _ _ |a #LA:E020#2021 Feb;31(1):48-57
520 _ _ |a To implement and to evaluate a compressed sensing (CS) reconstruction algorithm based on the sensitivity encoding (SENSE) combination scheme (CS-SENSE), used to reconstruct sodium magnetic resonance imaging (23Na MRI) multi-channel breast data sets.In a simulation study, the CS-SENSE algorithm was tested and optimized by evaluating the structural similarity (SSIM) and the normalized root-mean-square error (NRMSE) for different regularizations and different undersampling factors (USF=1.8/3.6/7.2/14.4). Subsequently, the algorithm was applied to data from in vivo measurements of the healthy female breast (n=3) acquired at 7T. Moreover, the proposed CS-SENSE algorithm was compared to a previously published CS algorithm (CS-IND).The CS-SENSE reconstruction leads to an increased image quality for all undersampling factors and employed regularizations. Especially if a simple 2nd order total variation is chosen as sparsity transformation, the CS-SENSE reconstruction increases the image quality of highly undersampled data sets (CS-SENSE: SSIMUSF=7.2=0.234, NRMSEUSF=7.2=0.491 vs. CS-IND: SSIMUSF=7.2=0.201, NRMSEUSF=7.2=0.506).The CS-SENSE reconstruction supersedes the need of CS weighting factors for each channel as well as a method to combine single channel data. The CS-SENSE algorithm can be used to reconstruct undersampled data sets with increased image quality. This can be exploited to reduce total acquisition times in 23Na MRI.
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700 1 _ |a Utzschneider, Matthias
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700 1 _ |a Zaric, Olgica
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700 1 _ |a Minarikova, Lenka
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700 1 _ |a Ruck, Laurent
|b 4
700 1 _ |a Zbýň, Štefan
|b 5
700 1 _ |a Hensel, Bernhard
|b 6
700 1 _ |a Trattnig, Siegfried
|b 7
700 1 _ |a Uder, Michael
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700 1 _ |a Nagel, Armin
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773 1 8 |a 10.1016/j.zemedi.2020.10.003
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