نتایج جستجو برای: patient specific quality assurance
تعداد نتایج: 2319441 فیلتر نتایج به سال:
The purpose of this study was to evaluate the effectiveness of full three-dimensional (3D) gamma algorithm for spot scanning proton fields, also referred to as pencil beam scanning (PBS) fields. The difference between the full 3D gamma algorithm and a simplified two-dimensional (2D) version was presented. Both 3D and 2D gamma algorithms are used for dose evaluations of clinical proton PBS field...
An intensity-modulated proton therapy (IMPT) patient-specific quality assurance (PSQA) program based on measurement alone can be very time consuming due to the highly modulated dose distributions of IMPT fields. Incorporating independent dose calculation and treatment log file analysis could reduce the time required for measurements. In this article, we summarize our effort to develop an effici...
Government involvement in quality assurance is becoming the trend in many countries, including New Zealand. What values underpin the systems that evolve in each country, and who has given legitimacy to them? In the context of the prevailing ideology of early childhood, this paper unpacks quality assurance in Australia and comments on the assumptions, taken for granted premises and values which ...
This paper features quality assurance of specific distance learning master study program through selfevaluation. This unique program involving e-learning as the program content, as well as delivery method, is presented in the paper from the aspects of its quality assurance. Student evaluation of this study program as a part of the internal quality assurance is performed at the end of every scho...
Quality assurance (QA) for comprehensive programs like the Program of All-inclusive Care for the Elderly (PACE) requires a special strategy. The assessment phase should be capable of looking across the usual subdivisions of care to recognize the contributions of various disciplines, and to focus on the effects of that care on the patient. Measures should thus include both problem-specific and p...
Introduction: The determination of accurate dose distribution is an issue of fundamental importance in radiotherapy, especially with regard to the fact that the human body is a heterogeneous medium. Therefore, the present study aimed to analyze the density and isodose depth profiles of 6 MV beam in a SP34 slab-wooden dust (pine)-SP34 slab (SWS) heterogeneous phantom. Materials and Methods: Th...
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