A Survey on Medical Image Analysis in Capsule Endoscopy

Author(s): Kuntesh Ketan Jani* , Rajeev Srivastava .

Journal Name: Current Medical Imaging

Volume 15 , Issue 7 , 2019

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Graphical Abstract:


Abstract:

Background and Objective: Capsule Endoscopy (CE) is a non-invasive, patient-friendly alternative to conventional endoscopy procedure. However, CE produces 6 to 8 hrs long video posing a tedious challenge to a gastroenterologist for abnormality detection. Major challenges to an expert are lengthy videos, need of constant concentration and subjectivity of the abnormality. To address these challenges along with high diagnostic accuracy, design and development of automated abnormality detection system is a must. Machine learning and computer vision techniques are devised to develop such automated systems.

Methods: Study presents a review of quality research papers published in IEEE, Scopus, and Science Direct database with search criteria as capsule endoscopy, engineering, and journal papers. The initial search retrieved 144 publications. After evaluating all articles, 62 publications pertaining to image analysis are selected.

Results: This paper presents a rigorous review comprising all the aspects of medical image analysis concerning capsule endoscopy namely video summarization and redundant image elimination, Image enhancement and interpretation, segmentation and region identification, Computer-aided abnormality detection in capsule endoscopy, Image and video compression. The study provides a comparative analysis of various approaches, experimental setup, performance, strengths, and limitations of the aspects stated above.

Conclusions: The analyzed image analysis techniques for capsule endoscopy have not yet overcome all current challenges mainly due to lack of dataset and complex nature of the gastrointestinal tract.

Keywords: CE, image-analysis, automated abnormality detection, non-invasive, gastroenterologist, medical image analysis.

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VOLUME: 15
ISSUE: 7
Year: 2019
Page: [622 - 636]
Pages: 15
DOI: 10.2174/1573405614666181102152434
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