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Journal of Medical Signals and Sensors، جلد ۱۴، شماره ۵، صفحات ۱۴-۵
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Identification of Circular Patterns in Capsule Endoscopy Bubble Frames |
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| چکیده انگلیسی مقاله |
Abstract Background: A significant number of frames captured by the wireless capsule endoscopy are involved with varying amounts of bubbles. Whereas different studies have considered bubbles as nonuseful agents due to the fact that they reduce the visualization quality of the small intestine mucosa, this research aims to develop a practical way of assessing the rheological capability of the circular bubbles as a suggestion for future clinical diagnostic purposes. Methods: From the Kvasir?capsule endoscopy dataset, frames with varying levels of bubble engagements were chosen in two categories based on bubble size. Border reflections are present on the edges of round?shaped bubbles in their boundaries, and in the frequency domain, high-frequency bands correspond to these edges in the spatial domain. The first step is about high-pass filtering of border reflections using wavelet transform (WT) and Differential of Gaussian, and the second step is related to applying the Fast Circlet Transform (FCT) and the Hough transform as circle detection tools on extracted borders and evaluating the distribution and abundance of all bubbles with the variety of radii. Results: Border’s extraction using WT as a preprocessing approach makes it easier for circle detection tool for better concentration on high?frequency circular patterns. Consequently, applying FCT with predefined parameters can specify the variety and range of radius and the abundance for all bubbles in an image. The overall discrimination factor (ODF) of 15.01, and 7.1 showing distinct bubble distributions in the gastrointestinal (GI) tract. The discrimination in ODF from datasets 1-2 suggests a relationship between the rheological properties of bubbles and their coverage area plus their abundance, highlighting the WT and FCT performance in determining bubbles’ distributions for diagnostic objectives. Conclusion: The implementation of an object?oriented attitude in gastrointestinal analysis makes it intelligible for gastroenterologists to approximate the constituent features of intra?intestinal fluids. this can’t be evaluated until the bubbles are considered as non?useful agents. The obtained results from the datasets proved that the difference between the calculated ODF can be used as an indicator for the quality estimation of intraintestinal fluids’ rheological features like viscosity, which helps gastroenterologists evaluate the quality of patient digestion. |
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| کلیدواژه‌های انگلیسی مقاله |
bubble, small bowel, fast circlet transform, wireless capsule endoscopy, foam analysis, foam metrics, rheological features analysis |
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| نویسندگان مقاله |
| Hossein Mir
Department of Bio?Electrics
and Biomedical Engineering,
School of Advanced
Technologies in Medicine,
Isfahan University of Medical
Sciences
| Vahid Sadeghi
1Department of Bio?Electrics
and Biomedical Engineering,
School of Advanced
Technologies in Medicine,
Isfahan University of Medical
Sciences, 2Medical Image and
Signal Processing Research
Center, School of Advanced
Technologies in Medicine,
Isfahan University of Medical
Sciences, Isfahan, Iran
| Alireza Vard
Department of Bio?Electrics and
Biomedical Engineering, School
of Advanced Technologies in
Medicine, Isfahan University of
Medical Sciences, Isfahan, Iran.
| Alireza Mehri Dehnavi
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| نشانی اینترنتی |
http://jmss.mui.ac.ir/index.php/jmss/article/view/713 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Original Articles |
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