Facultatea de Fizică
Universitatea "Al.I.Cuza" Iaşi
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| Titlu: Modelarea fasciculului de fotoni cu ajutorul staţiei ... |
| Autori: Cristian Murguleţ, Mihaela Dulcescu |
| Afiliere: Universitatea „Al. I. Cuza“, Facultatea de Fizică, Iaşi, Bdv. Carol I nr.11, România |
| Abstract: The basic relationships of the convolution/superposition dose calculation technique are reviewed, and a modeling technique is described that can be used to obtain a satisfactory beam model for a commercially available convolution/superposition-based treatment planning system. A fluence energy spectrum for a Co60 treatment machine obtained from a Monte Carlo simulation is used to modeling a fluence spectrum for a Rokus M machine. To realize this model we measure the depth dose distributions and dose profiles with a Wellhofer dosimetry system. The primary fluence is iteratively modeled by comparing computed depth dose curves and beam profiles with depth dose curves and cross-beam profiles measured in a water phantom.The objective of beam modeling is to build a model of the primary fluence that is incident on the patient which can then be used in the calculation of the dose deposited in the patient. |
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