On the dosimetric accuracy of a Sievert integration model in the proximity of Ir-192 HDR sources

Pantelis, E; Baltas, D; Dardoufas, K; Karaiskos, P; Papagiannis, P; Rosaki-Mavrouli, H; Sakelliou, L

dc.contributor.author	Pantelis, E	en
dc.contributor.author	Baltas, D	en
dc.contributor.author	Dardoufas, K	en
dc.contributor.author	Karaiskos, P	en
dc.contributor.author	Papagiannis, P	en
dc.contributor.author	Rosaki-Mavrouli, H	en
dc.contributor.author	Sakelliou, L	en
dc.date.accessioned	2014-03-01T01:18:09Z
dc.date.available	2014-03-01T01:18:09Z
dc.date.issued	2002	en
dc.identifier.issn	0360-3016	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14826
dc.subject	brachytherapy	en
dc.subject	intravascular	en
dc.subject	Sievert	en
dc.subject	Ir-192 HDR sources	en
dc.subject.classification	Oncology	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	DOSE-RATE BRACHYTHERAPY	en
dc.subject.other	MONTE-CARLO DOSIMETRY	en
dc.subject.other	PERCUTANEOUS TRANSLUMINAL ANGIOPLASTY	en
dc.subject.other	INTERSTITIAL BRACHYTHERAPY	en
dc.subject.other	INTRAVASCULAR BRACHYTHERAPY	en
dc.subject.other	ENDOVASCULAR BRACHYTHERAPY	en
dc.subject.other	AIDED DOSIMETRY	en
dc.subject.other	PARAMETERS	en
dc.subject.other	GEOMETRY	en
dc.subject.other	POINT	en
dc.title	On the dosimetric accuracy of a Sievert integration model in the proximity of Ir-192 HDR sources	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0360-3016(02)02804-3	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0360-3016(02)02804-3	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Purpose: To investigate the efficacy of a Sievert integration model in dosimetry close to Ir-192 high-dose-rate brachytherapy sources and validate its accuracy and potential to resolve dosimetric differences between these sources in the cm and mm distance ranges relevant to interstitial and intravascular brachytherapy applications, respectively. Methods and Materials: The dosimetric quantities of the generalized Task Group 43 formalism, as well as dose rate profiles in polar and Cartesian coordinates, are calculated, and results are compared to corresponding Monte Carlo data in the literature. Results: Sievert calculations were found in excellent agreement with corresponding Monte Carlo published results. Dose rate polar angle profiles in the cm distance range depended significantly on corresponding anisotropy function data, whereas in the mm. distance range, dose rate polar angle profiles are governed by the corresponding geometry function profiles, because anisotropy proved insignificant. Radial dose functions of the sources were found comparable. A simple equation for the calculation of the dose rate constant of the sources, within clinically acceptable accuracy is provided. Conclusions: The particular Sievert model proved capable of resolving dosimetric differences of the sources and provides results within clinical accuracy. Therefore, it constitutes a useful tool for dosimetry in clinical practice and especially in intravascular applications, where there is currently a lack of available dosimetric data. (C) 2002 Elsevier Science Inc.	en
heal.publisher	ELSEVIER SCIENCE INC	en
heal.journalName	INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS	en
dc.identifier.doi	10.1016/S0360-3016(02)02804-3	en
dc.identifier.isi	ISI:000176925400034	en
dc.identifier.volume	53	en
dc.identifier.issue	4	en
dc.identifier.spage	1071	en
dc.identifier.epage	1084	en