Introduction: Breast cancer is becoming more frequently diagnosed at early stages with improved long-term outcomes. Radiation-related heart disease and lung cancer can occur following radiotherapy for breast cancer. The aim of this study was to evaluate some dosimetric parameters of heart and lung during whole breast radiotherapy. Materials and Methods: Twenty...

s 17th Annual SASRO Meeting, Davos 2013 Physics Oral P01-22 P01 Phantom based kV-CBCT dose plan calculations for re-planning decision: comparison with CT-based dose plans P01 P02 First experimental results of motion mitigation by continuous line scanning P02 P03 Impact of respiratory-correlated CT reconstruction algorithms in the choice of margin definition for free breathing lung treatment P03...

Accurate estimation of the surface dose in radiotherapy patients with head and neck cancer is very important terms treatment. The aim this study to evaluate for intensity-modulated (IMRT) using thermoluminescent dosimeters (TLDs). In addition, it aimed examine estimates treatment planning system (TPS) different grid sizes. Before computed tomography (CT) images were taken 15 patients, 5 points ...

In the present work, the correlated sampling technique in Monte Carlo calculations related to diamond dosimetry and graphite calorimetry will be described. The egs_chamber and DOSRZnrc user-codes included in the EGSnrc package are used. Egs_chamber is already provided with routines enabling the use of correlated sampling while an in-house implementation of this technique was made in the origina...

INTRODUCTION For accurate dose calculations, it is necessary to provide a correct relationship between the CT numbers and electron density in radiotherapy treatment planning systems (TPSs). The purpose of this study was to investigate the energy dependence of measured CT numbers on substituted materials used for CT number calibration of radiotherapy TPSs and the resulting errors in the treatmen...

The comparison of the pencil beam dose calculation algorithm with modified Batho heterogeneity correction (PBC-MB) and the analytical anisotropic algorithm (AAA) and the mutual comparison of advanced dose calculation algorithms used in breast radiotherapy have focused on the differences between the physical dose distributions. Studies on the radiobiological impact of the algorithm (both on the ...

PurposeCurrent quality assurance of radiotherapy involving bony regions generally utilises homogeneous phantoms and dose calculations, ignoring the challenges heterogeneities with dosimetry problems likely occurring around bone. Anthropomorphic synthetic materials enable realistic end-to-end testing in clinical scenarios. This work reports on measurements calculated corrections required to dire...

The clinical use of respiratory-gated radiotherapy and the application of intensity-modulated radiotherapy (IMRT) are 2 relatively new innovations to the treatment of lung cancer. Respiratory gating can reduce the deleterious effects of intrafraction motion, and IMRT can concurrently increase tumor dose homogeneity and reduce dose to critical structures including the lungs, spinal cord, esophag...

Advanced image-guided stereotatic body lung radiotherapy techniques using volumetric-modulated arc radiotherapy (VMAT) with four-dimensional cone-beam computed tomography (4D CBCT) and CyberKnife with real-time target tracking have been clinically implemented by different authors. However, dosimetric comparisons between these techniques are lacking. In this study, 4D CT scans of 14 patients wer...