Universität zu Köln

Kausar, Abu, Mani, Karthick R., Azhari, Hasin A. and Zakaria, Golam A. (2019). Patient-specific quality control for intensity-modulated radiation therapy and volumetric-modulated arc therapy using electronic portal imaging device and two-dimensional ion chamber array. J. Radiother. Pract., 18 (1). S. 26 - 32. CAMBRIDGE: CAMBRIDGE UNIV PRESS. ISSN 1467-1131

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Abstract

AimThe purpose of this study was to develop the patient-specific quality control (QC) process by most commonly used dosimeters in Bangladesh and recommend a suitable passing rate for QC, irrespective of the dosimetric tools used.Materials and methodsIntensity-modulated radiation therapy (IMRT) and volumetric-modulated arc therapy (VMAT) plans of five head-and-neck (HN) and five prostate patients were selected for the patient-specific QC. These plans were generated using the Eclipse TPS v110 (Varian Medical Systems, Inc., Palo Alto, CA, USA) 6 MV X-ray from a Varian TrueBeam linear accelerator (Varian Medical Systems, Inc.) for each case. Each IMRT and VMAT plans were measured by two-dimensional (2D) ion chamber arrays (I'matriXX) and electronic portal imaging devices (EPID), respectively. The passing rates of the dosimetric tools were calculated using criteria of 3%/3 mm.ResultsThe average passing rates (SD) of I'matriXX for prostate and HN were 979 +/- 076 and 9888 +/- 024, respectively. For VMAT verification, the average passing rates of EPID for prostate for arc1 and arc2 were 9615 +/- 049 and 978 +/- 070, respectively; similarly, for HN the rates were 9785 +/- 063 and 972 +/- 056, respectively.ConclusionThe results showed that both the dosimeters can be used in patient-specific QC, although the EPID-based IMRT and VMAT QC is more advantageous in terms of time-saving and ease of use. Hence, for patient-specific QC, one can use the ion chamber arrays (I'matriXX) or EPID in hospital, but the systems need to be cross-checked.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kausar, Abu UNSPECIFIED UNSPECIFIED UNSPECIFIED Mani, Karthick R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Azhari, Hasin A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zakaria, Golam A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-155755
DOI:	10.1017/S1460396918000328
Journal or Publication Title:	J. Radiother. Pract.
Volume:	18
Number:	1
Page Range:	S. 26 - 32
Date:	2019
Publisher:	CAMBRIDGE UNIV PRESS
Place of Publication:	CAMBRIDGE
ISSN:	1467-1131
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language IMRT Multiple languages Radiology, Nuclear Medicine & Medical Imaging Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15575