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Calculation of absorbed doses from computed tomography in pelvic phantom using Monte Carlo Simulation |
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| รหัสดีโอไอ | |
| Creator | 1. Janejirarak Ritpanja 2. Phiphat Phruksarojanakun 3. Waraporn Sudjai 4. Chayanit Jumpee |
| Title | Calculation of absorbed doses from computed tomography in pelvic phantom using Monte Carlo Simulation |
| Publisher | Faculty of Associated Sciences, Chiang Mai University |
| Publication Year | 2564 |
| Journal Title | Journal of Associated Medical Sciences |
| Journal Vol. | 54 |
| Journal No. | 3 |
| Page no. | 27-31 |
| Keyword | Computed tomography (CT), absorbed dose, MCNP, Monte Carlo, OSL nanodot |
| URL Website | https://he01.tci-thaijo.org/index.php/bulletinAMS/index |
| Website title | Journal of Associated Medical Sciences |
| ISSN | 25396064 |
| Abstract | Background: Computed Tomography (CT) is an effective diagnosis method which deposits high absorbed doses on internal organs; therefore, it is necessary to understand dosimetry nature of this method.Objectives: To improve CT absorbed dose estimation by using a more appropriate phantom representing a human body and a Monte Carlo transport code.Materials and methods: The Monte Carlo N-Particle transport code Version 5 or MCNP5 is used in this study to simulate a Rando phantom representing pelvic section of a patient in a CT procedure. Absorbed doses of various internal organs from MCNP5 are compared with standard experimental measurements based on the InLight nanoDot dosimeters.Results: CT absorbed dose between MCNP5 simulation and standard experiment measurement are mostly in reasonable agreements within 10-percent discrepancy except those at skin positions.Conclusion: Further study is recommended for calculating absorbed doses at skin positions, MCNP5 is practically reliable for estimating absorbed doses in a number of internal organs. The MCNP5 simulation is one of alternative method to evaluate patient radiation dose which helps radiology team manage diagnosis and treatment planning. |
