Keyword search (4,164 papers available)

"Dosimetry" Keyword-tagged Publications:

Title Authors PubMed ID
1 Dosimetry of [18F]TRACK, the first PET tracer for imaging of TrkB/C receptors in humans Thiel A; Kostikov A; Ahn H; Daoud Y; Soucy JP; Blinder S; Jaworski C; Wängler C; Wängler B; Juengling F; Enger SA; Schirrmacher R; 37870640
PERFORM
2 Optically Stimulated Nanodosimeters with High Storage Capacity. Van der Heggen D, Cooper DR, Tesson M, Joos JJ, Seuntjens J, Capobianco JA, Smet PF 31387200
CNSR

 

Title:Optically Stimulated Nanodosimeters with High Storage Capacity.
Authors:Van der Heggen D,  Cooper DR,  Tesson M,  Joos JJ,  Seuntjens J,  Capobianco JA,  Smet PF
Link:https://www.ncbi.nlm.nih.gov/pubmed/31387200?dopt=Abstract
DOI:10.3390/nano9081127
Publication:Nanomaterials (Basel, Switzerland)
Keywords:dosimetry;  nanophosphor;  optically stimulated luminescence;  persistent phosphors;  thermoluminescence; 
PMID:31387200 Category:Nanomaterials (Basel) Date Added:2019-08-08
Dept Affiliation: CNSR
1 LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1, 9000 Gent, Belgium.
2 Medical Physics Unit, McGill University, Cedars Cancer Centre, 1001 Décarie Blvd, Montreal, QC H4A 3J1, Canada.
3 Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St. W., Montreal, QC H4B 1R6, Canada.
4 LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1, 9000 Gent, Belgium. Philippe.Smet@UGent.be.

Description:

Optically Stimulated Nanodosimeters with High Storage Capacity.

Nanomaterials (Basel). 2019 Aug 05;9(8):

Authors: Van der Heggen D, Cooper DR, Tesson M, Joos JJ, Seuntjens J, Capobianco JA, Smet PF

Abstract

In this work we report on the thermoluminescence (TL) and optically stimulated luminescence (OSL) properties of ß-Na(Gd,Lu)F4:Tb3+ nanophosphors prepared via a standard high-temperature coprecipitation route. Irradiating this phosphor with X-rays not only produces radioluminescence but also leads to a bright green afterglow that is detectable up to hours after excitation has stopped. The storage capacity of the phosphor was found to be (2.83 ± 0.05) × 1016 photons/gram, which is extraordinarily high for nano-sized particles and comparable to the benchmark bulk phosphor SrAl2O4:Eu2+,Dy3+. By combining TL with OSL, we show that the relatively shallow traps, which dominate the TL glow curves and are responsible for the bright afterglow, can also be emptied optically using 808 or 980 nm infrared light while the deeper traps can only be emptied thermally. This OSL at therapeutically relevant radiation doses is of high interest to the medical dosimetry community, and is demonstrated here in uniform, solution-processable nanocrystals.

PMID: 31387200 [PubMed]




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