REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR
A number of QA procedures have been developed for Breast Brachytherapy treatments, yet none guarantee accurate dose delivery or allow conformation of the actual source position leading to errors sometimes going unnoticed. The objective of this study is to track the exact path the HDR source would...
Main Author: | |
---|---|
Format: | Others |
Published: |
VCU Scholars Compass
2010
|
Subjects: | |
Online Access: | http://scholarscompass.vcu.edu/etd/2236 http://scholarscompass.vcu.edu/cgi/viewcontent.cgi?article=3235&context=etd |
id |
ndltd-vcu.edu-oai-scholarscompass.vcu.edu-etd-3235 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-vcu.edu-oai-scholarscompass.vcu.edu-etd-32352017-03-17T08:25:50Z REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR Bondal, Aditya A number of QA procedures have been developed for Breast Brachytherapy treatments, yet none guarantee accurate dose delivery or allow conformation of the actual source position leading to errors sometimes going unnoticed. The objective of this study is to track the exact path the HDR source would follow in real time. The exit radiation of the HDR source was used to image a well defined matrix of markers. The images were acquired using FPD and were processed to obtain projection coordinates while an x-ray calibration image was processed to obtain marker coordinates. Each marker along with its projection represents a line in 3D. A mathematical solution for the ‘near-intersection’ of two 3D lines was implemented and used to determine the ‘true’ 3D source position. A matrix with N markers will produce N*(N-1)/2 points of intersection and their mean will result in a more accurate source position. This study has proved that the accuracy of source position detection using a FPD is sub-millimeter. 2010-08-04T07:00:00Z text application/pdf http://scholarscompass.vcu.edu/etd/2236 http://scholarscompass.vcu.edu/cgi/viewcontent.cgi?article=3235&context=etd © The Author Theses and Dissertations VCU Scholars Compass HDR Brachytherapy Flat Panel Detector Tracking Biomedical Engineering and Bioengineering Engineering |
collection |
NDLTD |
format |
Others
|
sources |
NDLTD |
topic |
HDR Brachytherapy Flat Panel Detector Tracking Biomedical Engineering and Bioengineering Engineering |
spellingShingle |
HDR Brachytherapy Flat Panel Detector Tracking Biomedical Engineering and Bioengineering Engineering Bondal, Aditya REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR |
description |
A number of QA procedures have been developed for Breast Brachytherapy treatments, yet none guarantee accurate dose delivery or allow conformation of the actual source position leading to errors sometimes going unnoticed. The objective of this study is to track the exact path the HDR source would follow in real time. The exit radiation of the HDR source was used to image a well defined matrix of markers. The images were acquired using FPD and were processed to obtain projection coordinates while an x-ray calibration image was processed to obtain marker coordinates. Each marker along with its projection represents a line in 3D. A mathematical solution for the ‘near-intersection’ of two 3D lines was implemented and used to determine the ‘true’ 3D source position. A matrix with N markers will produce N*(N-1)/2 points of intersection and their mean will result in a more accurate source position. This study has proved that the accuracy of source position detection using a FPD is sub-millimeter. |
author |
Bondal, Aditya |
author_facet |
Bondal, Aditya |
author_sort |
Bondal, Aditya |
title |
REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR |
title_short |
REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR |
title_full |
REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR |
title_fullStr |
REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR |
title_full_unstemmed |
REAL TIME 3-D TRACKING OF THE HIGH DOSE RATE RADIATION SOURCE USING A FLAT PANEL DETECTOR |
title_sort |
real time 3-d tracking of the high dose rate radiation source using a flat panel detector |
publisher |
VCU Scholars Compass |
publishDate |
2010 |
url |
http://scholarscompass.vcu.edu/etd/2236 http://scholarscompass.vcu.edu/cgi/viewcontent.cgi?article=3235&context=etd |
work_keys_str_mv |
AT bondaladitya realtime3dtrackingofthehighdoserateradiationsourceusingaflatpaneldetector |
_version_ |
1718427724657197056 |