Twinkling effect in detecting kidney stones

Statistics in recent years have shown alarming figures of patients diagnosed with kidney stones. Although the medical condition will not result in death, the possibility of recurrence increases as compared to those who have never had one. A Computed Tomography (CT) scan is usually the most effective...

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Main Author: Sung, Wei Pei
Other Authors: School of Mechanical and Aerospace Engineering
Format: Final Year Project
Language:English
Published: 2014
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Online Access:http://hdl.handle.net/10356/60924
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-609242023-03-04T18:32:47Z Twinkling effect in detecting kidney stones Sung, Wei Pei School of Mechanical and Aerospace Engineering Zhou Yufeng DRNTU::Engineering::Mechanical engineering::Assistive technology Statistics in recent years have shown alarming figures of patients diagnosed with kidney stones. Although the medical condition will not result in death, the possibility of recurrence increases as compared to those who have never had one. A Computed Tomography (CT) scan is usually the most effective way to detect kidney stones, since it holds a true positive rate of over 90%. The downside is the monetary costs and the exposure to harmful ionizing radiation. These factors affect the patients adversely over a period of follow-up appointments. In 1996, a mixture of colour was recorded by Rahmouni and his team of researchers under the ultrasound sonography during the detection of kidney stones. This became the medical alternative as it is cheaper than a CT scan, and comparatively non-invasive and non-radiating. However, the mechanism of this "Twinkling" phenomenon is unknown, resulting in a low sensitivity of 30% as compared to CT scan. Under the colour Doppler imaging, a blue colour is formed when an object moves away from the transducer and red represents the motion in a reciprocal direction. The twinkling effect shows a mixture of colours even when the object, being scanned, remains stationary. The main focus of this report is seeks the mechanism of this phenomenon through various experimental investigations as well as theoretical simulation so as to increase the true positive rate of renal stone detection using colour doppler imaging. Recommendations were derived through observation and directions for future studies were also included in the report. Bachelor of Engineering (Mechanical Engineering) 2014-06-03T02:44:41Z 2014-06-03T02:44:41Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/60924 en Nanyang Technological University 90 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering::Assistive technology
spellingShingle DRNTU::Engineering::Mechanical engineering::Assistive technology
Sung, Wei Pei
Twinkling effect in detecting kidney stones
description Statistics in recent years have shown alarming figures of patients diagnosed with kidney stones. Although the medical condition will not result in death, the possibility of recurrence increases as compared to those who have never had one. A Computed Tomography (CT) scan is usually the most effective way to detect kidney stones, since it holds a true positive rate of over 90%. The downside is the monetary costs and the exposure to harmful ionizing radiation. These factors affect the patients adversely over a period of follow-up appointments. In 1996, a mixture of colour was recorded by Rahmouni and his team of researchers under the ultrasound sonography during the detection of kidney stones. This became the medical alternative as it is cheaper than a CT scan, and comparatively non-invasive and non-radiating. However, the mechanism of this "Twinkling" phenomenon is unknown, resulting in a low sensitivity of 30% as compared to CT scan. Under the colour Doppler imaging, a blue colour is formed when an object moves away from the transducer and red represents the motion in a reciprocal direction. The twinkling effect shows a mixture of colours even when the object, being scanned, remains stationary. The main focus of this report is seeks the mechanism of this phenomenon through various experimental investigations as well as theoretical simulation so as to increase the true positive rate of renal stone detection using colour doppler imaging. Recommendations were derived through observation and directions for future studies were also included in the report.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Sung, Wei Pei
format Final Year Project
author Sung, Wei Pei
author_sort Sung, Wei Pei
title Twinkling effect in detecting kidney stones
title_short Twinkling effect in detecting kidney stones
title_full Twinkling effect in detecting kidney stones
title_fullStr Twinkling effect in detecting kidney stones
title_full_unstemmed Twinkling effect in detecting kidney stones
title_sort twinkling effect in detecting kidney stones
publishDate 2014
url http://hdl.handle.net/10356/60924
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