Use of a two-dimensional ionization chamber array for proton therapy beam quality assurance

2008 ◽  
Vol 35 (9) ◽  
pp. 3889-3894 ◽  
Author(s):  
Bijan Arjomandy ◽  
Narayan Sahoo ◽  
Xiaoning Ding ◽  
Michael Gillin
Keyword(s):  
Quality Assurance ◽  
Proton Therapy ◽  
Ionization Chamber ◽  
Beam Quality ◽  
Two Dimensional

scholarly journals Use of a novel two-dimensional ionization chamber array for pencil beam scanning proton therapy beam quality assurance

2015 ◽  
Vol 16 (3) ◽  
pp. 270-276 ◽  
Author(s):  
Liyong Lin ◽  
Minglei Kang ◽  
Timothy D. Solberg ◽  
Thierry Mertens ◽  
Christian Baumer ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Proton Therapy ◽  
Ionization Chamber ◽  
Beam Quality ◽  
Pencil Beam ◽  
Two Dimensional ◽  
Beam Scanning ◽  
Pencil Beam Scanning

SU-FF-T-435: Use of a Two-Dimensional Ionization Chamber Array for Proton Therapy Quality Assurance Checks

2007 ◽  
Vol 34 (6Part14) ◽  
pp. 2502-2502
Author(s):  
B Arjomandy ◽  
N Sahoo ◽  
M Gillin ◽  
X Zhu
Keyword(s):  
Quality Assurance ◽  
Proton Therapy ◽  
Ionization Chamber ◽  
Two Dimensional ◽  
Therapy Quality

Applications of a novel detector for pencil beam scanning proton therapy beam quality assurance

2021 ◽  
pp. 2140041
Author(s):  
Pei-Ying Yang ◽  
Yang-Wei Hsieh ◽  
Chen-Lin Kang ◽  
Chin-Dar Tseng ◽  
Chih-Hsueh Lin ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Proton Therapy ◽  
Beam Quality ◽  
Beam Width ◽  
Scanning Speed ◽  
Spot Size ◽  
Pencil Beam ◽  
Beam Position ◽  
The Cross ◽  
One Year

This study utilized a new type of detector, the CROSS II (Liverage Biomedical Inc., Taiwan), to perform a beam quality assurance (QA) procedure on a Sumitomo (Sumitomo Heavy Industries, Inc., Japan) pencil beam linear scanning proton therapy machine. The Cross II can monitor proton Pristine Bragg peak range, beam width, beam size, beam position, and scanning speed. All the data presented here were collected during a time span of over one year. The accuracy of the QA program could be verified if all the QA items were tested stably and within the programmed tolerances. Our results showed that the proton range remained within the [Formula: see text] mm tolerance, with the majority of measurements within [Formula: see text] mm, [Formula: see text] mm for spot size, 1.5 mm for spot position, and [Formula: see text]% for scanning speed. We found that the CROSS II detector is in high precise and steady state with highly efficient. Our proton therapy system was also proven to be in an accurate and reliable condition according to our QA results.

SU-FF-T-140: Dosimetric IMRT Plan Verification and Daily Quality Assurance with a Two-Dimensional Ionization Chamber Array

2005 ◽  
Vol 32 (6Part8) ◽  
pp. 1982-1982
Author(s):  
B Poppe ◽  
A Blechschmidt ◽  
A Djouguela ◽  
R Kollhoff ◽  
A Rubach ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Ionization Chamber ◽  
Two Dimensional ◽  
Imrt Plan

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 Quality assurance evaluation of spot scanning beam proton therapy with an anthropomorphic prostate phantom

2013 ◽  
Vol 86 (1031) ◽  
pp. 20130390 ◽  
Author(s):  
K Iqbal ◽  
M Gillin ◽  
P A Summers ◽  
S Dhanesar ◽  
K A Gifford ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Proton Therapy ◽  
Scanning Beam ◽  
Spot Scanning ◽  
Beam Proton

scholarly journals Towards Effective and Efficient Patient-Specific Quality Assurance for Spot Scanning Proton Therapy

Cancers ◽  
2015 ◽  
Vol 7 (2) ◽  
pp. 631-647 ◽  
Author(s):  
X. Zhu ◽  
Yupeng Li ◽  
Dennis Mackin ◽  
Heng Li ◽  
Falk Poenisch ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Proton Therapy ◽  
Patient Specific ◽  
Spot Scanning
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