[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
Main Menu
Journal Information::
Articles archive::
Publication Ethics::
Peer Review Process::
Indexing Databases::
For Authors::
For Reviewers::
Contact us::
Site Facilities::
Google Scholar Metrics

Citation Indices from GS

AllSince 2019

Search in website

Advanced Search
Receive site information
Enter your Email in the following box to receive the site news and information.
Registered in



:: Volume 22, Issue 7 (in press 2015) ::
Journal of Ilam University of Medical Sciences 2015, 22(7): 146-153 Back to browse issues page
Evaluation of the Adsorbed Radiation Dose to Critical Regions of Head and Neck During Radiotherapy of Brain Frontal Lobe
Abstract:   (6643 Views)
Introduction: Radiotherapy plays an important role in treatment of CNS benign and malignant tumors. Radiotherapy in addition to killing cancer cells causes damages to normal healthy tissues. The goal of this study was to determine absorbed dose to chiasma, lens of eye, optic chiasm, retina, parotid, thyroid and submandibular glands in the radiotherapy of brain frontal lobe tumors. Materials & Methods: A head and neck phantom was constructed using human natural bone and paraffin wax with NaCl as soft tissue substitute. Six cylinders were made using phantom material in which places were embedded to insert TLDs. Treatment planning was done on the phantom and absorbed dose to each organ were obtained using dose volume histograms (DVH). The phantom was irradiated using linac and absorbed dose to each organ was obtained using TLDs, too. Findings: In both methods absorbed dose to all organs except one lens was in their tolerance dose levels. In all organs except thyroid and submandibular glands, the differences between calculated and measured doses on the phantom were less than 5%. The obtained results presents an estimation of radiotherapy induced complications in this region of brain. Besides, it is possible to validate treatment planning system using measured doses on the phantom. Discussion & Conclusion: Our results showed differences in the range of 1.1%-5% between treatment planning system and direct measurement in all organs except submandibular glands and thyroid which might be due to their large distance to primary radiation field TLD response in these regions although small, but differs from lower value obtained from treatment planning system which might be due to scattered radiation which is not well considered by the treatment planning system.
Keywords: Brain Neoplasms, Radiotherapy, Thermoluminescent Dosimetry, Phantom, Organs at Risk
Full-Text [DOCX 4549 kb]   (3137 Downloads)    
Type of Study: Research | Subject: General
Received: 2015/03/15 | Accepted: 2015/03/15 | Published: 2015/03/15
Add your comments about this article
Your username or Email:


XML   Persian Abstract   Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Evaluation of the Adsorbed Radiation Dose to Critical Regions of Head and Neck During Radiotherapy of Brain Frontal Lobe. J. Ilam Uni. Med. Sci. 2015; 22 (7) :146-153
URL: http://sjimu.medilam.ac.ir/article-1-2593-en.html

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 22, Issue 7 (in press 2015) Back to browse issues page
مجله دانشگاه علوم پزشکی ایلام Journal of Ilam University of Medical Sciences
Persian site map - English site map - Created in 0.16 seconds with 41 queries by YEKTAWEB 4643