منابع مشابه
Quality assurance using a photodiode array
Improved treatment techniques in radiation therapy provide incentive to reduce treatment margins, thereby increasing the necessity for more accurate geometrical setup of the linear accelerator and accompanying components. In the present paper, we describe the development of a novel device that enables precise and automated measurement of geometric parameters for the purpose of improving initial...
متن کاملCMS HCAL Hybrid Photodiode Design and Quality Assurance Stations
The hadronic calorimeter for the CMS experiment requires photodetection in a 4 Tesla magnetic field. This, plus high neutron radiation and a 25 ns bunch-crossing, necessitated the development of a new type of high-rate multi-channel hybrid photodiode. As our specifications became tighter, design changes in the diode structure and surface treatment became necessary, resulting in a better product...
متن کامل2D 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...
متن کاملAdvantages of Photodiode Array
Preface All products are continuously being improved for better performance. Spectrometers have developed in many ways since the introduction of simple and moderately priced spectrophotometers which were commercially available from the mid 1950’s. 1 Such improvements have enabled SCINCO to manufacture PDA type UV-Vis. spectrophotometers. The scope and performance of conventional single channel ...
متن کاملEvaluation of a 2D diode array for IMRT quality assurance.
BACKGROUND AND PURPOSE The QA of intensity modulated radiotherapy (IMRT) dosimetry is a laborious task. The goal of this work is to evaluate the dosimetric characteristics of a new 2D diode array (MapCheck from Sun Nuclear Corporation, Melbourne, Florida) and assess the role it can play in routine IMRT QA. MATERIAL AND METHODS Fundamental properties of the MapCheck such as reproducibility, li...
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ژورنال
عنوان ژورنال: Journal of Applied Clinical Medical Physics
سال: 2011
ISSN: 1526-9914
DOI: 10.1120/jacmp.v12i2.3358