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Tumor Discovery                                                         Breast cancer optical differentiation



            1. Introduction                                    pathology practice. However, there  are critical  contrasts
                                                               in motivations for appropriating computerized innovation
            Breast malignancy (BM) is a threatening disease in   in pathology when contrasted with radiology. In digital
            women [1,2] . BM has a high occurrence and mortality rates   radiology, sensors can straightforwardly catch the data from
            globally . In line with the World Health Organization’s   imaging sources. This advanced cycle obviates the need for
                  [2]
            recommendation, it is vital to have an effective healthcare   ordinary films, harmful compound preparation, and X-ray
            system for BM diagnosis and therapy . Of all women’s   record rooms. By contrast, slide imaging for pathology
                                           [3]
                                                 [4]
            tumors, 16% are diagnosed with breast cancer . It is the   necessitates that the tissues are prepared in the typical way
            primary source of malignancy-based death in Africa, with   (embedded in paraffin, cut, set on glass slides, and stained).
            an elevated rate in low-  and middle-income nations [5,6] .   Afterward, the pathologist investigates the samples visually
            Even though the sign of cancer is not selective to   thru the microscope, which often consumes time and effort
            females, the incidence rate of breast cancer in women is   and relies on clinician experience .
                                                                                         [24]
            multiple times higher than that in men . The malignant-
                                           [7]
            based death, in one way, is credited to late diagnosis   Several studies compared the frozen section analysis
            as the malignancy has grown in size or metastasized.   and the imprint  cytology  involving  hematoxylin  and
            Consequently, early diagnosis is an excellent approach to   eosin (H&E) staining examination alone. Motomura et al.
            improving the survival rate, which can go up to 95% .  reported that compared to H&E, imprint cytology analysis
                                                     [8]
                                                               has an overall accuracy, sensitivity, and the specificity of
              Early detection of BM was the objective of multiple   96%, 90.9%, and 98.5%, respectively . Flett et al. stated
                                                                                            [25]
            studies involving imaging modalities , such as     that frozen section analysis  accurately predicts axillary
                                               [9]
            mammograms , ultrasound (US) , and breast magnetic   node status with 95% . Moreover, Van Diest et al. stated
                                       [11]
                       [10]
                                                                                [26]
            resonance imaging (BMRI) . On the other hand, it is   that frozen section examinations were better than imprint
                                  [12]
            limited to several components, for example, the contrast   cytology analysis (sensitivity 91% versus 63%), and
            noise ratio , longitudinal resolution, and signal-to-noise   specificity for both methods was 100% .
                    [13]
                                                                                             [27]
            ratio of every machine . Researchers have investigated
                               [14]
            numerous   breast  cancer  diagnostic  techniques,   Hyperspectral imaging (HSI) is also called imaging
                                                                                                 [28]
            incorporating X-ray mammogram, MRI, US, positron   spectrometry and chemical imaging . HSI has
            emission tomography scan, computerized tomography   advantages over multispectral and RGB imaging because
            (CT), and tissue removal (biopsy), which are detailed in   it captures tens to hundreds (continuous spectrum)
            Table S1 (Supplementary File), for the regular breast cancer   along the electromagnetic spectrum. HSI collects spatial
            diagnostic approaches and their constraints .      information (x, y), and a spectral wavelength called a data
                                              [15]
                                                               cube, with each pixel, provides a specific spectral signature
              At present, tissue sampling is the standard method for   based on the  reflection,  transmission,  and absorption
            BM identification. However, it requires acquiring a tumor   of electromagnetic radiation for each material under
            biopsy and then an investigation by a pathologist . In   examination . HSI coordinates ordinary imaging and
                                                     [16]
                                                                         [29]
            addition, tissue sampling involves staining, sample cutting,   spectroscopy modalities to provide spatial and spectral
            and microscopic investigations, which are time-consuming   information about the object of interest [30,31] . Spectrometry
            and costly .                                       imaging had been exploited in land scanning remotely
                    [17]
              None of the abovementioned imaging modalities is   since 1985 .
                                                                       [32]
            flawless for intraoperative resection of malignant tumors .   As an imaging methodology for clinical applications,
                                                        [18]
            For example, 37% of the women had breast apportioning,   HSI  offers  extraordinary  potential  for  noninvasive
            and the tumor was allocated at the edge of the biopsy .   diagnostic  and  surgical  navigation .  Several  studies
                                                        [19]
                                                                                             [33]
            In oncology, failure to completely eradicate malignant   highlight the novelty of the HSI in medical applications,
            develops cancer recurrence which leads to the spread of   For example, Fabelo et al. used an intraoperative imaging
            the disease . Presently, a pathologist, who investigates   system utilizing HSI to assist in brain tumor delineation to
                     [20]
            the tissue with a digital microscope, surveys the resection   differentiate between normal and cancer tissue in the brain
            edge  a couple of days after an operation and following   during a neurosurgical operation . In addition, Goto
                                                                                           [34]
            this, the pathologist can give a direct examination before   et al. implemented a study to recognize gastric tumors
            commencing the treatment .                         in ex vivo human tissues . Furthermore, Regeling et al.
                                 [21]
                                                                                   [35]
              The US Food and Drug Administration approved the   utilized flexible endoscopy combined with an HSI system
            whole slide imaging (WSI) for the fundamental analysis   to discriminate laryngeal cancer to acquire HS cubes in
            of histopathological slides [22,23] . Computerized radiology   the region within 390 ~ 680  nm . Moreover, HSI had
                                                                                          [36]
            enables immediate investigation of WSI in routine   been exploited in monitoring the thermal ablation in the
            Volume 2 Issue 1 (2023)                         2                           https://doi.org/10.36922/td.258
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