1. Home page
  2. Search

Polymer gel dosimetry using a three-dimensional MRI acquisition technique

This item is provided by the institution :
National Technical University of Athens   

Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA   

see the original item page
in the repository's web site and access all digital files if the item*



Polymer gel dosimetry using a three-dimensional MRI acquisition technique (EN)
Sakelliou, L (EN)
Sandilos, P (EN)
Baltas, D (EN)
Seimenis, I (EN)
Papagiannis, P (EN)
Pappas, E (EN)
Baras, P (EN)
Angelopoulos, A (EN)
Karaiskos, P (EN)
Vlachos, L (EN)
Kipouros, P (EN)
journalArticle (EN)
2014-03-01T01:18:13Z
2002 (EN)
In this work, three-dimensional (3-D) MRI techniques are employed in N-Vinylpyrrolidone-Argon(VIPAR-) based polymer gel dosimetry. VIPAR gels were irradiated using a Nucletron microSelection Ir-192 HDR brachytherapy remote afterloading system with single source dwell position and intravascular brachytherapy irradiation protocols. A single VIPAR gel and a single irradiation are adequate to obtain the full calibration curve needed. The 3-D dose distributions obtained with the 3-D MRI method were found to be in good agreement with the corresponding Monte Carlo calculations, for brachytherapy and intravascular irradiations. The method allows the reconstruction of isodose contours over any plane, with increased spatial resolution and accuracy following a single MR acquisition. VIPAR gel measurements using a 3-D MRI readout technique can be of particular use in the experimental dosimetry of brachytherapy sources, as well as for dose verification purposes when complex irradiation regimes and three-dimensional dose gradients are investigated. (C) 2002 American Association of Physicists in Medicine. (EN)
Radiology, Nuclear Medicine & Medical Imaging (EN)
dosimetry (EN)
nuclear magnetic resonance imaging (EN)
Humans (EN)
accuracy (EN)
iridium 192 (EN)
polyvinyl derivative (EN)
Equipment Design (EN)
irradiation (EN)
evaluation (EN)
N-vinylpyrrolidone-argon polymer (EN)
Gelatin (EN)
Vascular Diseases (EN)
radiometry (EN)
brachytherapy (EN)
instrumentation (EN)
radiation dose (EN)
Polymer-MRI dosimetry (EN)
computer assisted radiotherapy (EN)
Imaging, Three-Dimensional (EN)
Polymers (EN)
Radiotherapy Planning, Computer-Assisted (EN)
Radiotherapy Dosage (EN)
Monte Carlo method (EN)
equipment design (EN)
Gels (EN)
N vinylpyrrolidone argon polymer (EN)
3-D (EN)
validation study (EN)
article (EN)
image quality (EN)
three dimensional imaging (EN)
Magnetic Resonance Imaging (EN)
argon (EN)
polymer (EN)
unclassified drug (EN)
comparative study (EN)
radiation dose distribution (EN)
gel (EN)
Sensitivity and Specificity (EN)
Radiometry (EN)
Brachytherapy (EN)
priority journal (EN)
n vinylpyrrolidone argon (EN)
Argon (EN)
calibration (EN)
human (EN)
Intravascular (EN)
Reproducibility of Results (EN)
reproducibility (EN)
Calibration (EN)
sensitivity and specificity (EN)
vascular disease (EN)
Polyvinyls (EN)
1 vinyl 2 pyrrolidinone (EN)
Phantoms, Imaging (EN)
gelatin (EN)
practice guideline (EN)
methodology (EN)
Medical Physics (EN)
English
AMER ASSOC PHYSICISTS MEDICINE AMER INST PHYSICS (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)