نتایج جستجو برای: quality assurance qa strategy

تعداد نتایج: 1076790  

Journal: :Physics in medicine and biology 2009
S Murty Goddu Sasa Mutic Olga L Pechenaya Summer R Chaudhari Jose Garcia-Ramirez Dharanipathy Rangaraj Eric E Klein Deshan Yang James Grigsby Daniel A Low

Tomotherapy is an image-guided, intensity-modulated radiation therapy system that delivers highly conformal dose distributions in a helical fashion. This system is also capable of acquiring megavoltage computed-tomography images and registering them to the planning kVCT images for accurate target localization. Quality assurance (QA) of this device is time intensive, but can be expedited by impr...

2008
M. E. Khan Anurag Mishra Vivek Sharma Leila Caleb Varkey

This study is made possible by the generous support of the American people through the United States Agency for International Development (USAID) under the terms of Cooperative Agreement No. HRN-A-00-98-00012-00 and Subproject number 5800.53075. The contents are the responsibility of the FRONTIERS Program and do not necessarily reflect the views of USAID or the United States Government. This pr...

1998
F. Giroud G. Haroske A. Reith A. Böcking

Quality assurance in medical services has become a more and more important issue. In order to achieve reliable results of DNA image cytometry as described and discussed in detail in the first part of this report [2], the conditions for reproducible preparation, measurement and interpretation have to be worked out, carefully followed and checked at various steps of the process in certain time in...

Journal: :Procedia CIRP 2021

Quality assurance (QA) is an important task in manufacturing to assess whether products meet their specifications. However, QA might be expensive, time-consuming, or incomplete. This paper presents a solution for predictive analytics based on machine sensor values during production while employing specialized machine-learning models classification controlled environment. Furthermore, we present...

2004
A. Dimov J. Vassileva

The Quality Control (QC) routine performance tests of the fluoroscopy equipment are an irreversible element of the Quality Assurance (QA) and Patient Protection (PP) system. The results from these tests may be helpful in identifying and quantifying: changes in system performance due to component failure or drift, programmed changes in system performance due to upgrades software, a new spectral ...

2007
Markus Dale Marie desJardins

We introduce the Fortunate Artists Media Empire (FAME) problem domain to study approaches for solving key challenges in distributed planning such as dynamic environments, dynamic goals, uncertainty of actions and scalability. FAME is an artificial problem domain that allows us to focus on key domain-independent research issues. The FAME problem domain is focused on broadcast quality monitoring ...

Journal: :Stochastic Environmental Research and Risk Assessment 2021

Abstract Representativeness and quality of collected meteorological data impact accuracy precision climate, hydrological, biogeochemical analyses predictions. We developed a comprehensive Quality Assurance (QA) Control (QC) statistical framework, consisting three major phases: Phase I—Preliminary exploration, i.e., processing raw datasets, with the challenging problems time formatting combining...

2012
Lilia Ponce Manangan Cheryl Tryon Elvin Magee Roque Miramontes

Introduction. The Centers for Disease Control and Prevention (CDC)'s National Tuberculosis Surveillance System (NTSS) is the national repository of tuberculosis (TB) data in the United States. Jurisdictions report to NTSS through the Report of Verified Case of Tuberculosis (RVCT) form that transitioned to a web-based system in 2009. Materials and Methods. To improve RVCT data quality, CDC condu...

Journal: :Medical physics 2011
Janelle A Molloy Gordon Chan Alexander Markovic Shawn McNeeley Doug Pfeiffer Bill Salter Wolfgang A Tome

Task Group 154 (TG154) of the American Association of Physicists in Medicine (AAPM) was created to produce a guidance document for clinical medical physicists describing recommended quality assurance (QA) procedures for ultrasound (U.S.)-guided external beam radiotherapy localization. This report describes the relevant literature, state of the art, and briefly summarizes U.S. imaging physics. S...

Journal: :Applied sciences 2021

The deep mixing method (DMM), an in situ soil stabilization technique, was developed Japan and Nordic countries the 1970s has gained increased popularity many countries. quality of stabilized depends upon factors, including its type condition, amount binder, production process. Quality control assurance (QC/QA) practices focus on soil, comprises laboratory mix tests, field trial monitoring cont...

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