The Effect of Neutron Contamination on Probability of Secondary Cancer in Radiotherapy of Pelvic Region with 18-MV Photons

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

KARIMI AMIR HOSSEIN; CHEGENI NAHID; JABBARI IRAJ; Hassanvand Maryam

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Isfahan Medical School Year:2019 | Volume:37 | Issue:519 Page(s): 222-`227

Download Full-Text

View:

121

Download:

Cites:

Information Journal Paper

Title

The Effect of Neutron Contamination on Probability of Secondary Cancer in Radiotherapy of Pelvic Region with 18-MV Photons

Author(s)

KARIMI AMIR HOSSEIN | CHEGENI NAHID | JABBARI IRAJ | Hassanvand Maryam | Issue Writer Certificate

Keywords

Radiotherapy

Neutrons

Cancer

Secondary

Risk assessment

Probability

Abstract

Background: Todays, Radiotherapy with high-energy photons is used as a common modality for Cancer treatment. Unfortunately, high-energy photons can produce unwanted Neutrons, and subsequently lead to increase the risk of Secondary Cancer in unshielded healthy organs. Methods: Using Monte Carlo (MC) code (MCNPX® ), the main parts of a typical Medical Linear Accelerator (LINAC) was modeled in 18 MV. Then, neutron source strength (Q) of the LINAC and neutron mean energy were evaluated for different treatment fields, and also different points at the treatment table. Additionally, to estimate the Probability of Secondary Cancer risk, the neutron equivalent dose was calculated at some of the human’ s critical organs. For this purpose, the female medical internal radiation dosimetry (MIRD) phantom was included in the MC simulations. Findings: The Q was found as 1. 25-1. 38 (all in 1012 n/Gy) for different treatment fields meaning significant portion of Neutrons with a mean energy of 0. 59-0. 90 MeV around the LINAC. Additionally, the total Secondary Cancer risk in unshielded healthy organs was calculated as 0. 0924% which maximum and minimum were related to stomach (0. 0216%) and thyroid (0. 0005%), respectively. Conclusion: Regarding the estimated values for the Probability of Secondary Cancer risk, it is suggested that in conventional Radiotherapy of deeply seated tumors, the 15-MV photons are preferred instead of using 18-MV photons due to their less biological side effects.

Cites

No record.

References

No record.

Cite

APA: Copy

KARIMI, AMIR HOSSEIN, CHEGENI, NAHID, JABBARI, IRAJ, & Hassanvand, Maryam. (2019). The Effect of Neutron Contamination on Probability of Secondary Cancer in Radiotherapy of Pelvic Region with 18-MV Photons. JOURNAL OF ISFAHAN MEDICAL SCHOOL (I.U.M.S), 37(519 ), 222-`227. SID. https://sid.ir/paper/767767/en

Vancouver: Copy

KARIMI AMIR HOSSEIN, CHEGENI NAHID, JABBARI IRAJ, Hassanvand Maryam. The Effect of Neutron Contamination on Probability of Secondary Cancer in Radiotherapy of Pelvic Region with 18-MV Photons. JOURNAL OF ISFAHAN MEDICAL SCHOOL (I.U.M.S)[Internet]. 2019;37(519 ):222-`227. Available from: https://sid.ir/paper/767767/en

IEEE: Copy

AMIR HOSSEIN KARIMI, NAHID CHEGENI, IRAJ JABBARI, and Maryam Hassanvand, “The Effect of Neutron Contamination on Probability of Secondary Cancer in Radiotherapy of Pelvic Region with 18-MV Photons,” JOURNAL OF ISFAHAN MEDICAL SCHOOL (I.U.M.S), vol. 37, no. 519 , pp. 222–`227, 2019, [Online]. Available: https://sid.ir/paper/767767/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops