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Global Translational Medicine                                           Deep learning by NMR-biochemical



            [HER2], estrogen receptor [ER], and progesterone receptor   of breast cancer gene expression categorize tumors into
            [PR]) further classifies tumors into subtypes. The profiles   molecular subtypes of basal-like, normal-like luminal A,
                                                               luminal  B,  and  HER2‑enriched  tumors.  Different  breast
                                                               cancer subtypes have different MRI radiomic features
                                                               serving  as  prognostic  indicators  called  PR+  versus  PR‑,
                                                               ER+ versus ER‑, HER2+ versus HER2‑, and triple‑negative
                                                               tumors or cancers. All these respond differently to different
                                                               therapies and are used in DL.
                                                                 In short, DL information from computer-extracted MRI-
                                                               visible soft-tissue tumor features with metabolite phenotypes
                                                               distinguish breast cancer subtypes by quantitative signatures
                                                               to predict prognosis for precision medicine.

                                                               3.2. Classification of brain GBM tumors
                                                               In GBM tumor cells, cell membrane show increased Cho‑
                                                               containing phospholipids concentration in proliferating
                                                               cells,  while  N-acetylaspartate  (NAA)  compounds  in
            Figure  6. A  case of luminal A estrogen receptor (ER)-positive,   neurons  diminish  in  GBM  tissue  samples  after  local
            progesterone receptor-positive, and progesterone receptor (HER2)-
            negative tumor stage II (see arrow) with negative lymph nodes shows   neuronal destruction in the neuronal milieu. The
            the segmented tumor outline by 4D automatic computer segmentation   neurochemical Cho to NAA Cho/NAA ratio is elevated
            algorithm. Computer analysis of the magnetic resonance spectroscopy   in  GBM  tumors.  The  T1‑weighted  contrast‑enhanced
            imaging spectromics measured the tumor size of 13.6  mm with   (T1wt-CE) and fluid-attenuated inversion recovery
            spectromics irregularity shape of 0.49 and the spectromics enhancement
            texture  energy  of  0.00185.  https://radiologykey.com/13-future-  (FLAIR) pulse sequences generate distinct MRI scans.
            applications-radiomics-and-deep-learning-on-breast-mri/.  The echo-planar MRI pulse sequence with the generalized




































            Figure 7. Schematic diagram illustrates the steps of establishing computer-extracted magnetic resonance spectroscopy imaging-based tumor phenotypes.
            Multiple mathematical descriptors calculate these phenotype features for specific clinical tasks. https://radiologykey.com/13-future-applications-
            radiomics-and-deep-learning-on-breast-mri/.
            Abbreviation: DCE-MRI: Dynamic contrast-enhanced magnetic resonance imaging.


            Volume 2 Issue 3 (2023)                         9                         https://doi.org/10.36922/gtm.337
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