scholarly journals Task Group 142 report: Quality assurance of medical acceleratorsa)

2009 ◽  
Vol 36 (9Part1) ◽  
pp. 4197-4212 ◽  
Author(s):  
Eric E. Klein ◽  
Joseph Hanley ◽  
John Bayouth ◽  
Fang-Fang Yin ◽  
William Simon ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Task Group ◽  
Report Quality

Reproducibility and quality assurance of two-dimensional gel electrophoresis of serum specimens.

1982 ◽  
Vol 28 (4) ◽  
pp. 908-914 ◽  
Author(s):  
R P Tracy ◽  
R M Currie ◽  
D S Young
Keyword(s):  
Quality Assurance ◽  
Gel Electrophoresis ◽  
Sodium Dodecyl ◽  
Two Dimensional ◽  
Protein Loss ◽  
Serum Samples ◽  
Silver Stain ◽  
Two Dimensional Gel Electrophoresis ◽  
Report Quality ◽  
Wide Range

Abstract Currently we are using two different ISO-DALT two-dimensional gel electrophoresis systems, designated MC-Iso 1 and MC-Iso 2, for the analysis of serum and plasma samples. Here we report quality-assurance data for both of these systems. CV values for the slopes of the pH gradient (ISO dimension) are 5.6% of less; CV values for the slopes of the molecular-mass curves (log Mr vs relative mobility in the DALT dimension) are 3.4% or less. We examined the various steps of the analysis in detail for reproducibility and protein loss, using radiolabeled albumin, alpha 2-macroglobulin, and beta 2-microglobulin. Generally, in the first dimension, less protein enters the MC-Iso 2 gels (our routine system in which silver stain is used) than enters the MC-Iso 1 gels (our wide-range system for myeloma serum samples, in which the gel is stained with Coomassie Blue), on the average, 87% as much. The CV at this stage for both systems is 5--8%. During equilibration, considerable amounts of protein are lost (approximately 30% in 10 min) from the ISO gel, and the reproducibility is also decreased. Resolution in the DALT dimension has, in most cases, little or no effect on either recovery or reproducibility. Overall, for most proteins expected to appear in an ISO gel of a given pH range, approximately 50--60% of the starting material may be expected to reside in the sodium dodecyl sulfate slab gel, under our conditions. The two most important variables affecting recovery are the concentration of the NaOH (used as catholyte) and the pH of the starting sample. The overall CV for the process is between 8 and 12%.

scholarly journals AAPM Task Group 128: Quality assurance tests for prostate brachytherapy ultrasound systems

2008 ◽  
Vol 35 (12) ◽  
pp. 5471-5489 ◽  
Author(s):  
Douglas Pfeiffer ◽  
Steven Sutlief ◽  
Wenzheng Feng ◽  
Heather M. Pierce ◽  
Jim Kofler
Keyword(s):  
Quality Assurance ◽  
Task Group ◽  
Prostate Brachytherapy

scholarly journals Quality assurance for computed-tomography simulators and the computed-tomography-simulation process: Report of the AAPM Radiation Therapy Committee Task Group No. 66

2003 ◽  
Vol 30 (10) ◽  
pp. 2762-2792 ◽  
Author(s):  
Sasa Mutic ◽  
Jatinder R. Palta ◽  
Elizabeth K. Butker ◽  
Indra J. Das ◽  
M. Saiful Huq ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Quality Assurance ◽  
Radiation Therapy ◽  
Task Group ◽  
Simulation Process

scholarly journals Quality assurance methods and phantoms for magnetic resonance imaging: Report of AAPM nuclear magnetic resonance Task Group No. 1

1990 ◽  
Vol 17 (2) ◽  
pp. 287-295 ◽  
Author(s):  
Ronald R. Price ◽  
Leon Axel ◽  
Tommie Morgan ◽  
Robert Newman ◽  
William Perman ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Nuclear Magnetic Resonance ◽  
Quality Assurance ◽  
Magnetic Resonance ◽  
Task Group ◽  
Resonance Imaging ◽  
Nuclear Magnetic

Quality assurance of U.S.-guided external beam radiotherapy for prostate cancer: Report of AAPM Task Group 154

2011 ◽  
Vol 38 (2) ◽  
pp. 857-871 ◽  
Author(s):  
Janelle A. Molloy ◽  
Gordon Chan ◽  
Alexander Markovic ◽  
Shawn McNeeley ◽  
Doug Pfeiffer ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Quality Assurance ◽  
External Beam Radiotherapy ◽  
Task Group ◽  
External Beam

Japanese Task Group 8 activities in international PV module quality assurance

2014 ◽  
Author(s):  
Keiichiro Sakurai ◽  
Akihiro Takano ◽  
Hironori Yanase ◽  
Toshiaki Sakai ◽  
Hironori Nishihara ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Task Group ◽  
Pv Module

scholarly journals Quality assurance for nonradiographic radiotherapy localization and positioning systems: Report of Task Group 147

2012 ◽  
Vol 39 (4) ◽  
pp. 1728-1747 ◽  
Author(s):  
Twyla Willoughby ◽  
Joerg Lehmann ◽  
José A. Bencomo ◽  
Shirish K. Jani ◽  
Lakshmi Santanam ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Task Group ◽  
Positioning Systems
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