Comparison of absorbed fraction of Gamma and Beta rays of I-124 and I-131radio-isotopes in thyroid gland with Monte Carlo Simulation
Journal Title: International journal of Advanced Biological and Biomedical Research - Year 2013, Vol 1, Issue 9
Abstract
I131 is a famous radio-iodine isotope in use for diagnosis and treatment of hyper functioning and cancerous thyroid gland. It is a nuclear reactor product; however nuclear reactor may be unavailable in some areas. Replacement by I-124 may be possible, another iodine isotope producible by cyclotron; a system more available than reactor. Here absorbed fraction of Gamma and Beta rays of I-124 throughout thyroid and neck soft tissues are measured and compared with I-131. Employing I-124 as substitute for I- 131 is also discussed. First of all, the input file for MCNPX code has been prepared to calculate F6 and F8 tallies. Then the code has been run for F6 and F8 tallies for variation of lobe volume from 1 to 25 milliliters. From the output file of tally F6, the gamma absorbed fraction in thyroid and neck tissue for the volume lobe variation from 1 ml to 25 ml have been derived. As well as, form the output of F8 tally the absorbed energy of beta in thyroid and soft tissue of neck is obtained and then absorbed fraction of beta has been calculated. Finding indicated that for constant activity in thyroid and soft tissue the gamma absorbed fraction for I-124 is less than I-131. For the same situation, the beta absorbed fraction of I-124 in thyroid is less than I-131 and in soft tissue is more than I-131. If I-131 is non-available it may be replaced by I-124for treatment of cancerous or hyper functional gland.
Authors and Affiliations
Mohammad Mirzaei| Department of Physics, Faculty of Shahid Chamran of Kerman, Technical and Vocational University, Kerman, Iran, E-mail: m.mirzaei@tvu.ac.ir, Hossein Mirshekarpour| Department of Nuclear Medicine, Kerman Medical science University, Kerman, Iran
Keywords
Related Articles
- EP ID EP12883
- DOI -
- Views 418
- Downloads 20
GIS-based Monitoring and EWSs of Desertification (Case study; southeastern of Iran)
Today one of the ecological crisis is the phenomenon of desertification that affecting the world. Desertification is more related to social and anthropogenic issues than natural causes and it becomes more important ove...
The Effects of Artemisia Dracunculus’ Powders Different Levels on Blood Parameters and Internal Organs Weight Broiler Chickens
This study was designed to investigate the effects of different levels of Tarragon powder on performance, carcass characteristics of broiler chickens. Two hundred Ross 308 male broiler chickens were randomly allocated...
A REVISION OF CALENDULA L. (ASTERACEAE), IN IRAN
The genus Calendula belongs to tribe Calenduleae, (Asteraceae family). It morphologically studied for the ongoing project of the flora of Iran. Based on the herbarium studies and field observation, this genus has been...
Application of seed equilibrium moisture curves in agro physics
The water relations play a fundamental role in seed comprehension of biology. In order to describe the process of drying and the effect on water activity, which controls biological change in storage, a sound knowledge...
Effect of seasons and different substrates on growth and reproduction of the compost worm Eisenia Fetida
The experiment was carried out in a factorial arrangement with the base of randomized complete block design in three repetitions. The first factor consisted of 11 bed for eating worm and the second factor is the differ...