Biological dose calculation using variable RBE in Single- and Multi-field Optimization IMPT plans for 3 Brain Tumor patients
Published on: 14th February, 2019
OCLC Number/Unique Identifier: 8022197964
Purpose: The purpose of this study was to evaluate biological dose in single-field optimization (SFO) and multi-field optimization (MFO) intensity-modulated proton therapy (IMPT) plans for brain tumor patients that used a fixed relative biological effectiveness (FRBE) and those that used a variable RBE (VRBE).
Materials and methods: SFO and MFO IMPT plans were planned by the Varian Eclipse treatment planning system for three brain tumor patients. Dose and linear energy transfer (LET) distributions for each plan were recomputed using an in-house fast Monte Carlo dose calculator system, and then biological dose distributions were calculated with a FRBE of 1.1 or with a previously published VRBE model. We then compared biological dose distributions obtained by the VRBE with those obtained by the FRBE.
Results: Doses obtained by the VRBE for the gross tumor volume and clinical target volume in all plans were 1%-2% larger than those obtained by the FRBE. The minimum dose obtained by the VRBE for the brainstem in the SFO IMPT of one patient was 140% larger than that obtained by the FRBE, but the difference was only 5.3 cGy (RBE). The difference in maximum dose for the optic chiasm in the MFO IMPT of another patient was less than 3.2%, but the dose difference was 149.2 cGy (RBE). We also found that no major differences were seen between the biological dose differences in the SFO IMPT plans and those in the MFO IMPT plans.
Conclusion: We could observe biological dose differences between the FRBE and the VRBE in the SFO and the MFO IMPT plans for brain tumor patients.
Search by University/Institution
Enter your University/Institution to find colleagues at HSPI.
Ensuring author's satisfaction with
- Friendly and hassle-free publication process
- Less production time of articles
- Constructive peer-review
- Enhancing journal reputation
- Regular feedback system
- Quick response to authors' queries
Most Viewed Keywords
Search Articles by Country
Get all latest articles in all Heighten Science Publications Inc journals by country.
Testmonials
I very much appreciate the humanitarian services provided in my stead by this journal/publisher. It exhibits total absence of editorial impertinence. As an Author, I have been guided to have a fruitf...
Chrysanthus Chukwuma
“It was a delightful experience publishing my manuscript with the Clinical Journal of Obstetrics and Gynecology. They offered me lots of opportunities I never had from most publishing houses and the...
Department of Agricultural Economics, Agribusiness...
Akowuah Jones Asafo
I am glad to submit the article to Heighten Science Publications as it has a very smooth and fast peer-review process, which enables the researchers to communicate their work on time.
Anupam M
Congratulations for the excellence of your journal and high quality of its publications.
Angel MARTIN CASTELLANOS
I hope to ability to make some new investigation and publish in Your Company in future.
Artur Stopyra
Thank you for your attitude and support. I am sincerely grateful to you and the entire staff of the magazine for the high professionalism and fast quality work. Thank you very much!
USA
Igor Klepikov
Publishing an article is a long process, but working with your publication department made things go smoothly, even though the process took exactly 5 months from the time of submitting the article til...
Anas Diab
Publishing with the International Journal of Clinical and Experimental Ophthalmology was a rewarding experience as review process was thorough and brisk. Their visibility online is second to none as t...
University of Port Harcourt Teaching Hospital, Nig...
Dr. Elizabeth A Awoyesuku
I would like to thank JPRA for taking this decision. I understand the effort it represents for you. I'm truly happy to have the paper published in JPRA. And I'll certainly consider JPRA for my next pu...
Emmanuel BUSATO
I like the quality of the print & overall service. The paper looks quite impressive. Hope this will attract interested readers. All of you have our best wishes for continued success.