Characterisation of grids of point detectors in maximum skin dose measurement in fluoroscopically-guided interventional procedures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652052%3A_____%2F15%3A%230000386" target="_blank" >RIV/86652052:_____/15:#0000386 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ejmp.2015.08.006" target="_blank" >http://dx.doi.org/10.1016/j.ejmp.2015.08.006</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ejmp.2015.08.006" target="_blank" >10.1016/j.ejmp.2015.08.006</a>
Alternative languages
Result language
angličtina
Original language name
Characterisation of grids of point detectors in maximum skin dose measurement in fluoroscopically-guided interventional procedures
Original language description
Purpose: Point detectors are frequently used to measure patient's maximum skin dose (MSD) in fluoroscopically-guided interventional procedures (IP). However, their performance and ability to detect the actual MSD are rarely evaluated. The present study investigates the sampling uncertainty associated with the use of grids of point detectors to measure MSD in IP. Method: Chemoembolisation of the liver (CE), percutaneous coronary intervention (PCI) and neuroembolisation (NE) procedures were studied. Spatial dose distributions were measured with XR-RV3 Gafchromic (R) films for 176 procedures. These distributions were used to simulate measurements performed using grids of detectors such as thermoluminescence detectors, with detector spacing from 1.4 up to 10 cm. Results: The sampling uncertainty was the highest in PCI and NE procedures. With 40 detectors covering the film area (36 cm x 44 cm), the maximum dose would be on average 86% and 63% of the MSD measured with Gafchromic (R) films in CE and PCI procedures, respectively. In NE procedures, with 27 detectors covering the film area (14 cm x 35 cm), the maximum dose measured would be on average 82% of the MSD obtained with the Gafchromic (R) films. Conclusion: Thermoluminescence detectors show good energy and dose response in clinical beam qualities. However the poor spatial resolution of such point-like dosimeters may far outweigh their good dosimetric properties. The uncertainty from the sampling procedure should be estimated when point detectors are used in IP because it may lead to strong underestimation of the MSD.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
FS - Medical facilities, apparatus and equipment
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physica Medica - European Journal of Medical Physics
ISSN
1120-1797
e-ISSN
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Volume of the periodical
31
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
6
Pages from-to
1112-1117
UT code for WoS article
000366660400038
EID of the result in the Scopus database
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