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Faculty of Medicine
Document Details
Document Type
:
Article In Journal
Document Title
:
The Role of Computed Tomography Based Treatment Planning in High Dose Rate (HDR) Brachytherapy in Carcinoma of The Cervix
The Role of Computed Tomography Based Treatment Planning in High Dose Rate (HDR) Brachytherapy in Carcinoma of The Cervix
Subject
:
Radiation Therapy
Document Language
:
English
Abstract
:
Aim: To compare the high dose rate (HDR) brachytherapy treatment planning using standard orthogonal radiography and computerized tomography (CT) for carcinoma of the cervix. Methods: Forty applications with orthogonal planning using the Brachy Vision treatment planning system version 7.3.10 were performed. Orthogonal and CT based planning in these applications were compared; the doses to point A, rectum and bladder were defined according to the American Brachytherapy Society (ABS) recommendation. Using CT planning, we calculated the dose volume histogram (DVH) for the CTV, rectum and bladder. Results: Using orthogonal films to prescribe to point A, only 63.5% of CTV received the prescribed dose. The mean dose to the bladder point is 2.9 Gy and 17% of the bladder volume was encompassed by 2.9 Gy isodose line. The mean dose at the rectum point is 3.4 Gy and 21% of the rectum volume was encompassed by 3.4 Gy isodose line. The maximum dose to the rectum and the bladder derived from the CT is 1.7 and 2.6 times higher than the orthogonal reference points. Conclusions: CT based treatment planning for HDR brachytherapy of cancer cervix is reliable and more accurate in definition and calculation of the dose to the target as well as the critical organs. It allows dose calculation based on the actual volume rather than points or bony landmarks
ISSN
:
0000-0000
Journal Name
:
Saudi Journal of Obstetrcis and Gynecology
Volume
:
11
Issue Number
:
2
Publishing Year
:
1430 AH
2009 AD
Article Type
:
Article
Added Date
:
Tuesday, August 2, 2011
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
ياسر بهادر
Bahadur, Yasir
Researcher
Doctorate
yasirbahadur@hotmail.com
Files
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Description
29991.pdf
pdf
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