Impact of dose calculation algorithm on radiation therapy

Radiobiological impact of dose calculation algorithms on biologically optimized IMRT lung stereotactic body radiation therapy plans

BACKGROUND The aim of this study is to evaluate the radiobiological impact of Acuros XB (AXB) vs. Anisotropic Analytic Algorithm (AAA) dose calculation algorithms in combined dose-volume and biological optimized IMRT plans of SBRT treatments for non-small-cell lung cancer (NSCLC) patients. METHODS Twenty eight patients with NSCLC previously treated SBRT were re-planned using Varian Eclipse (V...

Calculation of gel dose after external radiation therapy using optical CT

In this study, the MAGIC- f polymer gel was used to determine the absorbed dose by external radiation therapy. The MAGIC- f gel was made under normal pressure and temperature conditions and irradiated with a Siemens 6MV linear accelerator at 10 × 10 cm2 and at a depth of 10 cm. While simulating the head of the accelerator unit by the Monte Carlo method with BEAMnrc code, the percentage depth do...

The effect of CT contrast agents on treatment planning and dose calculation in radiation therapy of pelvis cancers

Introduction: Using contrast medium in diagnosis and identifying of an organ from its surrounding tissue is very useful. These contrast mediums alter radiation absorption of studied organs. The aim of this study is to identify the influences of contrast media in treatment planning system of the pelvis.   Materials and Methods: Seven patients with pelvis area ...

The impact of dose calculation algorithms on partial and whole breast radiation treatment plans

BACKGROUND This paper compares the calculated dose to target and normal tissues when using pencil beam (PBC), superposition/convolution (AAA) and Monte Carlo (MC) algorithms for whole breast (WBI) and accelerated partial breast irradiation (APBI) treatment plans. METHODS Plans for 10 patients who met all dosimetry constraints on a prospective APBI protocol when using PBC calculations were rec...

Calculation of dose distributions in radiation therapy by a digital computer. II. Computation of dose distrsbution in radium therapy.