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  1. Article ; Online: Utilizing adaptive deformable convolution and position embedding for colon polyp segmentation with a visual transformer.

    Sikkandar, Mohamed Yacin / Sundaram, Sankar Ganesh / Alassaf, Ahmad / AlMohimeed, Ibrahim / Alhussaini, Khalid / Aleid, Adham / Alolayan, Salem Ali / Ramkumar, P / Almutairi, Meshal Khalaf / Begum, S Sabarunisha

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 7318

    Abstract: Polyp detection is a challenging task in the diagnosis of Colorectal Cancer (CRC), and it demands clinical expertise due to the diverse nature of polyps. The recent years have witnessed the development of automated polyp detection systems to assist the ... ...

    Abstract Polyp detection is a challenging task in the diagnosis of Colorectal Cancer (CRC), and it demands clinical expertise due to the diverse nature of polyps. The recent years have witnessed the development of automated polyp detection systems to assist the experts in early diagnosis, considerably reducing the time consumption and diagnostic errors. In automated CRC diagnosis, polyp segmentation is an important step which is carried out with deep learning segmentation models. Recently, Vision Transformers (ViT) are slowly replacing these models due to their ability to capture long range dependencies among image patches. However, the existing ViTs for polyp do not harness the inherent self-attention abilities and incorporate complex attention mechanisms. This paper presents Polyp-Vision Transformer (Polyp-ViT), a novel Transformer model based on the conventional Transformer architecture, which is enhanced with adaptive mechanisms for feature extraction and positional embedding. Polyp-ViT is tested on the Kvasir-seg and CVC-Clinic DB Datasets achieving segmentation accuracies of 0.9891 ± 0.01 and 0.9875 ± 0.71 respectively, outperforming state-of-the-art models. Polyp-ViT is a prospective tool for polyp segmentation which can be adapted to other medical image segmentation tasks as well due to its ability to generalize well.
    MeSH term(s) Humans ; Polyps ; Ambulatory Care Facilities ; Diagnostic Errors ; Electric Power Supplies ; Colon ; Image Processing, Computer-Assisted
    Language English
    Publishing date 2024-03-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-57993-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Deep Transfer Learning Based Unified Framework for COVID19 Classification and Infection Detection from Chest X-Ray Images.

    Sundaram, Sankar Ganesh / Aloyuni, Saleh Abdullah / Alharbi, Raed Abdullah / Alqahtani, Tariq / Sikkandar, Mohamed Yacin / Subbiah, Chidambaram

    Arabian journal for science and engineering

    2021  Volume 47, Issue 2, Page(s) 1675–1692

    Abstract: The presentation of the COVID19 has endangered several million lives worldwide causing thousands of deaths every day. Evolution of COVID19 as a pandemic calls for automated solutions for initial screening and treatment management. In addition to the ... ...

    Abstract The presentation of the COVID19 has endangered several million lives worldwide causing thousands of deaths every day. Evolution of COVID19 as a pandemic calls for automated solutions for initial screening and treatment management. In addition to the thermal scanning mechanisms, findings from chest X-ray imaging examinations are reliable predictors in COVID19 detection, long-term monitoring and severity evaluation. This paper presents a novel deep transfer learning based framework for COVID19 detection and segmentation of infections from chest X-ray images. It is realized as a two-stage cascaded framework with classifier and segmentation subnetwork models. The classifier is modeled as a fine-tuned residual SqueezeNet network, and the segmentation network is implemented as a fine-tuned SegNet semantic segmentation network. The segmentation task is enhanced with a bioinspired Gaussian Mixture Model-based super pixel segmentation. This framework is trained and tested with two public datasets for binary and multiclass classifications and infection segmentation. It achieves accuracies of 99.69% and 99.48% for binary and three class classifications, and a mean accuracy of 83.437% for segmentation. Experimental results and comparative evaluations demonstrate the superiority of this unified model and signify potential extensions for biomarker definition and severity quantization.
    Language English
    Publishing date 2021-08-11
    Publishing country Germany
    Document type Journal Article
    ISSN 2193-567X
    ISSN 2193-567X
    DOI 10.1007/s13369-021-05958-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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