The importance of medical physics methods in modern radiation therapy is shown. types irradiation used are considered. At each stage, it necessary to maintain high accuracy all procedures. One the significant stages treatment planning, where quality control plan carried out ensure patient. process plans with intensity modulation (Volumetric Modulated Arc Therapy - VMAT) on VitalBeam linear acce...

Purpose or Objective: Intensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) are widely used in the treatment of advanced stage non-small cell lung cancer (NSCLC). These techniques deliver conformal dose distributions at the cost of increased target dose heterogeneity (particularly IMRT) and larger volumes of surrounding healthy tissues receiving low doses (par...

BACKGROUND With salvage radiation therapy (SRT) in the postprostatectomy setting, the need to deliver sufficient radiation doses to achieve a high probability of tumor control is balanced with the risk of increased toxicity. Intensity-modulated radiation therapy (IMRT) in the postprostatectomy salvage setting is gaining interest as a treatment strategy. OBJECTIVE Compare acute and late toxici...

Abstract Purpose The exposition of cardiac conduction system during breast radiation therapy has never been studied, despite the increasing use intensity-modulated therapy, which exposes larger volume to low-dose bath. We evaluated node exposure irradiation with volumetric modulated arc and estimated potential dosimetric benefit proton therapy. Materials Methods Atrioventricular (AVN) sinoatria...

This paper investigates the clinical significance of real-time monitoring of intrafractional prostate motion during external beam radiotherapy using a commercial 4D localization system. Intrafractional prostate motion was tracked during 8,660 treatment fractions for 236 patients. The following statistics were analyzed: 1) the percentage of fractions in which the prostate shifted 2-7 mm for a ce...

BACKGROUND To determine appropriate timing of an adaptive radiation therapy (ART) replan by evaluating anatomic and dosimetric changes of target volumes and organs at risk (OARs) during intensity-modulated radiation therapy (IMRT) for nasopharyngeal carcinoma (NPC). METHODS Nineteen NPC patients were recruited. Each patient had repeat computed tomography (CT) scans after each five fractions a...

background: identify the optimal technique of radiotherapy for patients with high grade glioma. our initial year of experience with rapidarc radiation therapy. materials and methods: planning ct scans of 50 patients with grade iv glioma were reviewed and three plan sets by 3d conformal radiotherapy (3dcrt), intensity modulated radiotherapy (imrt) and rapid arc (ra) were generated and the plans ...

In patients with head and neck cancer, the most common issue after radiation treatment is xerostomia consequences of that, which are affecting quality everyday life patient. Subjectively manifested as dryness in oral cavity, followed obstructed chewing swallowing food. Mostly it happens because death cells gland that supposed to be dividing, caused by radiation. To improve patients’ treatment, ...