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http://dx.doi.org/10.14316/pmp.2015.26.1.36

Calculation of Dose Distribution for SBRT Patient Using Geant4 Simulation Code  

Kang, Jeongku (Department of Radiation Oncology, Presbyterian Medical Center)
Lee, Jeongok (Department of Radiology, Wonkwang Health Science University)
Lee, Dong Joon (Department of Neurosurgery, Ilsan Paik Hospital, School of Medicine, Inje University)
Publication Information
Progress in Medical Physics / v.26, no.1, 2015 , pp. 36-41 More about this Journal
Abstract
The Monte Carlo based dose calculation program for stereotactic body radiotherapy was developed in this study. The Geant4 toolkit widely used in the radiotherapy was used for this study. The photon energy spectrum of the medical linac studied in the previous research was applied for the patient dose calculations. The geometry of the radiation fields defined by multi-leaf collimators were taken into account in the PrimaryGeneratorAction class of the Geant4 code. The total of 8 fields were demonstrated in the patient dose calculations, where rotation matrix as a function of gantry angle was used for the determination of the source positions. The DicomHandler class converted the binary file format of the DICOM data containing the matrix number, pixel size, endian type, HU number, bit size, padding value and high bits order to the ASCII file format. The patient phantom was constructed using the converted ASCII file. The EGSnrc code was used to compare the calculation efficiency of the material data.
Keywords
Monte Carlo; dicom; SBRT; Geant4;
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Times Cited By KSCI : 1  (Citation Analysis)
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