Document Detail

A liquid fluorescence dosimeter for proton dosimetry.
MedLine Citation:
PMID:  22349208     Owner:  NLM     Status:  In-Data-Review    
The pyromellitic acid (benzene-1,2,4,5-tetracrboxylic acid) dosimeter is a liquid, nearly tissue equivalent detector (the density of the solution is 1.000 56 g cm(-3)). This acid fluoresces after exposure to proton radiation, if excited with light. The detector was exposed to proton doses of 1.0-10.0 Gy (energies: 138 and 160 MeV). The correlation between fluorescence intensity and delivered energy dose is one to one and linear, whereby the deviation from the linear behavior for all measured values is less than 1%. Variations of the dose rate between 2.4 and 6.0 Gy s(-1) had no influence on the correlation between dose and fluorescence. The quenching of the pyromellitic acid detector amounts to about 22% for 138 MeV protons in the Bragg peak. For the period of 1-26 days after exposure, an increase in fluorescence intensity of the exposed solutions (5.0 Gy) was noticed, which corresponds to a daily data drift averaging 0.91% if the solution is stored in the dark at 4 °C. Non-exposed solutions showed no change of the control value.
Roger Nadrowitz; Adolf Coray; Terence Boehringer; Jürgen Dunst; Dirk Rades
Related Documents :
3882258 - Immunohistochemical localization of o6-ethyldeoxyguanosine and deoxyguanosin-8-yl-(acet...
22447838 - Vigorous intensity physical activity is related to the metabolic syndrome independent o...
18386198 - Thorium-induced oxidative stress mediated toxicity in mice and its abrogation by diethy...
7992228 - Lack of promoting effect of proline on bile duct cancer development in dimethylnitrosam...
15350458 - Hematologic reconstitution following high-dose and supralethal chemoradiotherapy using ...
23016598 - A comparison of the effects of nicotinamide and progesterone on functional recovery of ...
Publication Detail:
Type:  Journal Article     Date:  2012-02-21
Journal Detail:
Title:  Physics in medicine and biology     Volume:  57     ISSN:  1361-6560     ISO Abbreviation:  Phys Med Biol     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-02-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401220     Medline TA:  Phys Med Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1325-33     Citation Subset:  IM    
Department of Radiation Oncology, University of Lübeck, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Aggressive behaviour and psychosis in a clinically referred child and adolescent sample.
Next Document:  Acute Effects of a Caffeine-Taurine Energy Drink on Repeated Sprint Performance of Collegiate Americ...