56th SSRMP Annual Meeting

Session

Session VI

1 Dec 2023, 15:10

Konferenzsaal Coronado (Conference Center)

12. Monte Carlo dose calculation for moving and deforming anatomy

Björn Zobrist

01/12/2023, 15:10

Radiation Therapy

Oral

Purpose: To develop a deformable voxel geometry (DVG) for Monte Carlo (MC) dose calculation and to integrate it into the Swiss Monte Carlo Plan (SMCP) to account for motion during dose calculation of radiotherapy treatment plans by deforming the patient geometry.

Methods: A volumetric modulated arc plan is created for a non-small cell lung cancer case (without breathing, static situation)....

14. Monte Carlo model of an ETHOS radiotherapy beam

Michael K Fix (Division of Medical Radiation Physics and Department of Radiation Oncology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland)

01/12/2023, 15:20

Radiation Therapy

Oral

Purpose: To implement, commission and validate a Monte Carlo (MC) model of an ETHOS radiotherapy beam within the Swiss Monte Carlo Plan (SMCP).

Methods: The geometry and material of the treatment head model consisting of the target, the primary collimator, the monitor chamber, the secondary collimator and the double-stack multi-leaf collimator (MLC) was implemented into SMCP following the...

21. Validation of a 6 MV flattening filter free phase space of a C-arm linear accelerator for a Monte Carlo framework

Ms Francine El Khoury Youhanna (Department of Biomedical Engineering, ETH Zurich)

01/12/2023, 15:30

Radiation Therapy

Oral

Purpose: To validate a 6 MV flattening filter free (FFF) phase space, determined in previous works, of a TrueBeam system for a Monte Carlo (MC) dose calculation framework.
Methods: The 6 MV FFF phase space, scored at the end of the patient-independent part (above the secondary collimator jaws), is used to calculate MC dose distributions inside a water phantom for square, rectangular,...

23. Monte Carlo codes for very high energy electrons: dosimetric and calculation time comparison

Chengchen Zhu (Division of Medical Radiation Physics and Department of Radiation Oncology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland)

01/12/2023, 15:40

Radiation Therapy

Oral

Purpose: To develop a versatile dose calculation framework for very high energy electron (VHEE) beams on patient CTs using various Monte Carlo (MC) codes and to compare their dose distributions and calculation times.
Methods: MC dose distributions of mono-energetic electron beams with energies 10-250 MeV, defined by a rectangular shape (10 x 10 cm2, parallel incidence) and impinging frontally...