Polymer gel dosimetry using a three-dimensional MRI acquisition technique

Baras, P; Seimenis, I; Kipouros, P; Papagiannis, P; Angelopoulos, A; Sakelliou, L; Pappas, E; Baltas, D; Karaiskos, P; Sandilos, P; Vlachos, L

dc.contributor.author	Baras, P	en
dc.contributor.author	Seimenis, I	en
dc.contributor.author	Kipouros, P	en
dc.contributor.author	Papagiannis, P	en
dc.contributor.author	Angelopoulos, A	en
dc.contributor.author	Sakelliou, L	en
dc.contributor.author	Pappas, E	en
dc.contributor.author	Baltas, D	en
dc.contributor.author	Karaiskos, P	en
dc.contributor.author	Sandilos, P	en
dc.contributor.author	Vlachos, L	en
dc.date.accessioned	2014-03-01T01:18:13Z
dc.date.available	2014-03-01T01:18:13Z
dc.date.issued	2002	en
dc.identifier.issn	0094-2405	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14874
dc.subject	3-D	en
dc.subject	Brachytherapy	en
dc.subject	Intravascular	en
dc.subject	Polymer-MRI dosimetry	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	1 vinyl 2 pyrrolidinone	en
dc.subject.other	iridium 192	en
dc.subject.other	n vinylpyrrolidone argon	en
dc.subject.other	polymer	en
dc.subject.other	unclassified drug	en
dc.subject.other	argon	en
dc.subject.other	gelatin	en
dc.subject.other	N vinylpyrrolidone argon polymer	en
dc.subject.other	N-vinylpyrrolidone-argon polymer	en
dc.subject.other	polyvinyl derivative	en
dc.subject.other	accuracy	en
dc.subject.other	article	en
dc.subject.other	brachytherapy	en
dc.subject.other	calibration	en
dc.subject.other	dosimetry	en
dc.subject.other	gel	en
dc.subject.other	irradiation	en
dc.subject.other	Monte Carlo method	en
dc.subject.other	nuclear magnetic resonance imaging	en
dc.subject.other	practice guideline	en
dc.subject.other	priority journal	en
dc.subject.other	radiation dose distribution	en
dc.subject.other	comparative study	en
dc.subject.other	computer assisted radiotherapy	en
dc.subject.other	equipment design	en
dc.subject.other	evaluation	en
dc.subject.other	human	en
dc.subject.other	image quality	en
dc.subject.other	instrumentation	en
dc.subject.other	methodology	en
dc.subject.other	radiation dose	en
dc.subject.other	radiometry	en
dc.subject.other	reproducibility	en
dc.subject.other	sensitivity and specificity	en
dc.subject.other	three dimensional imaging	en
dc.subject.other	validation study	en
dc.subject.other	vascular disease	en
dc.subject.other	Argon	en
dc.subject.other	Brachytherapy	en
dc.subject.other	Calibration	en
dc.subject.other	Equipment Design	en
dc.subject.other	Gelatin	en
dc.subject.other	Gels	en
dc.subject.other	Humans	en
dc.subject.other	Imaging, Three-Dimensional	en
dc.subject.other	Magnetic Resonance Imaging	en
dc.subject.other	Phantoms, Imaging	en
dc.subject.other	Polymers	en
dc.subject.other	Polyvinyls	en
dc.subject.other	Radiometry	en
dc.subject.other	Radiotherapy Dosage	en
dc.subject.other	Radiotherapy Planning, Computer-Assisted	en
dc.subject.other	Reproducibility of Results	en
dc.subject.other	Sensitivity and Specificity	en
dc.subject.other	Vascular Diseases	en
dc.title	Polymer gel dosimetry using a three-dimensional MRI acquisition technique	en
heal.type	journalArticle	en
heal.identifier.primary	10.1118/1.1514657	en
heal.identifier.secondary	http://dx.doi.org/10.1118/1.1514657	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	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
heal.publisher	AMER ASSOC PHYSICISTS MEDICINE AMER INST PHYSICS	en
heal.journalName	Medical Physics	en
dc.identifier.doi	10.1118/1.1514657	en
dc.identifier.isi	ISI:000179342200007	en
dc.identifier.volume	29	en
dc.identifier.issue	11	en
dc.identifier.spage	2506	en
dc.identifier.epage	2516	en