Patient-specific quality assurance on a Varian Halcyon linear accelerator using a PTW Octavius 4D device

2D linear array device as a quality assurance tool in brachytherapy applications

Background: External beam radiotherapy and brachytherapy plays a vital role in the management of cancer cervix.  High dose rate brachytherapy is being presently used worldwide for the brachytherapy applications. At present, 2-Dimensional linear array detectors   are the most common QA tool used for pretreatment patient specific quality assurance in external beam radiotherapy alon...

Quality Assurance of Varian On-board Imager

Accurate and repeatable setup of patients is a requisite in radiotherapy. In the treatment of head-and-neck tumors, accurate setup is particularly important because of the proximity of the treatment volume to critical structures such as the spinal cord, brainstem, and parotid glands. When intensity-modulated radiotherapy (IMRT) is used, proximity of this kind between the target and normal organ...

Evaluation of patient specific quality assurance techniques with Oncentra Masterplan and Varian iX

A Specific Patient Quality Assurance (PSQA) procedure for a Co-60 source based High Dose Rate Brachytherapy

Introduction: In radiation therapy, accurate dose determination and precise dose delivery to the tumor are directly associated with better treatment outcomes in terms of higher tumor control and lower post radiation therapy complications. The current study aims the development and clinical application of the Patient Specific Quality Assurance (PSQA) procedures for nasopharyngea...

Quality Assurance of IMRT delivery systems – Varian

Introduction Intensity modulated radiation therapy (IMRT) provides the means for improved treatment for a wide variety of cancers. Piggybacked onto 3DCRT and MLC technologies, IMRT has developed quickly, but will undoubtedly see improvements in core hardware and software as well as in peripheral applications such as record and verify, gating, etc. At the core, individual treatment centers shoul...