Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)

The first part of this study was about measurement of dosimetric parameters for small photon beams to be used as input data for treatment planning computer system (TPS) and to verify the dose calculated by TPS in Stereotactic Radiosurgery (SRS) procedure. The beam data required were percentage depth...

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Main Authors:	Reduan Abdullah, Nik Ruzman Nik Idris, Ahmad Zakaria, Ahmad Lutfi Yusof, Mazurawati Mohamed, Nur Iziana Mohsin
Format:	Article
Language:	English
Published:	Penerbit UKM 2015
Subjects:	RA Public aspects of medicine
Online Access:	http://journalarticle.ukm.my/9013/ http://journalarticle.ukm.my/9013/ http://journalarticle.ukm.my/9013/1/9468-26163-1-PB.pdf

id	ukm-9013
recordtype	eprints
spelling	ukm-90132016-12-14T06:48:43Z http://journalarticle.ukm.my/9013/ Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS) Reduan Abdullah, Nik Ruzman Nik Idris, Ahmad Zakaria, Ahmad Lutfi Yusof, Mazurawati Mohamed, Nur Iziana Mohsin, RA Public aspects of medicine The first part of this study was about measurement of dosimetric parameters for small photon beams to be used as input data for treatment planning computer system (TPS) and to verify the dose calculated by TPS in Stereotactic Radiosurgery (SRS) procedure. The beam data required were percentage depth dose (PDD), off-axis ratio (OAR) and scattering factor. Small beams of 5 mm to 45 mm diameter from a circular cone collimator in SRS were used for beam data measurements. Measurements were made using pinpoint ionisation chamber (0.016cc). In the second part of this study, we reported the important of carrying out quality assurance (QA) procedures before SRS treatment which were found to infl uence the accuracy of dose delivery. These QA procedures consisted of measurements on the accuracy in target localization and treatment room laser alignment. The calculated TPS dose for treatment was verifi ed using pinpoint ionisation chamber and thermoluminescent detector (TLD) 100H. The deviation mean between measured and calculated dose was -3.28%. The measured dose obtained from pinpoint ionisation chamber is in good agreement with the calculated dose from TPS with deviation mean of 2.17%. In conclusion, pinpoint ionisation chamber gives a better accuracy in dose calculation compared to TLD 100H. The results are acceptable as recommended by International Commission on Radiation Units and Measurements (ICRU) Report No. 50 (1994) that dose delivered to the target volume must be within ± 5% error. Penerbit UKM 2015 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9013/1/9468-26163-1-PB.pdf Reduan Abdullah, and Nik Ruzman Nik Idris, and Ahmad Zakaria, and Ahmad Lutfi Yusof, and Mazurawati Mohamed, and Nur Iziana Mohsin, (2015) Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS). Jurnal Sains Kesihatan Malaysia, 13 (1). pp. 39-49. ISSN 1675-8161 http://ejournal.ukm.my/jskm/issue/view/588
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
topic	RA Public aspects of medicine
spellingShingle	RA Public aspects of medicine Reduan Abdullah, Nik Ruzman Nik Idris, Ahmad Zakaria, Ahmad Lutfi Yusof, Mazurawati Mohamed, Nur Iziana Mohsin, Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)
description	The first part of this study was about measurement of dosimetric parameters for small photon beams to be used as input data for treatment planning computer system (TPS) and to verify the dose calculated by TPS in Stereotactic Radiosurgery (SRS) procedure. The beam data required were percentage depth dose (PDD), off-axis ratio (OAR) and scattering factor. Small beams of 5 mm to 45 mm diameter from a circular cone collimator in SRS were used for beam data measurements. Measurements were made using pinpoint ionisation chamber (0.016cc). In the second part of this study, we reported the important of carrying out quality assurance (QA) procedures before SRS treatment which were found to infl uence the accuracy of dose delivery. These QA procedures consisted of measurements on the accuracy in target localization and treatment room laser alignment. The calculated TPS dose for treatment was verifi ed using pinpoint ionisation chamber and thermoluminescent detector (TLD) 100H. The deviation mean between measured and calculated dose was -3.28%. The measured dose obtained from pinpoint ionisation chamber is in good agreement with the calculated dose from TPS with deviation mean of 2.17%. In conclusion, pinpoint ionisation chamber gives a better accuracy in dose calculation compared to TLD 100H. The results are acceptable as recommended by International Commission on Radiation Units and Measurements (ICRU) Report No. 50 (1994) that dose delivered to the target volume must be within ± 5% error.
format	Article
author	Reduan Abdullah, Nik Ruzman Nik Idris, Ahmad Zakaria, Ahmad Lutfi Yusof, Mazurawati Mohamed, Nur Iziana Mohsin,
author_facet	Reduan Abdullah, Nik Ruzman Nik Idris, Ahmad Zakaria, Ahmad Lutfi Yusof, Mazurawati Mohamed, Nur Iziana Mohsin,
author_sort	Reduan Abdullah,
title	Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)
title_short	Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)
title_full	Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)
title_fullStr	Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)
title_full_unstemmed	Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)
title_sort	measurement of dosimetric parameters and dose verification in stereotactic radiosurgery (srs)
publisher	Penerbit UKM
publishDate	2015
url	http://journalarticle.ukm.my/9013/ http://journalarticle.ukm.my/9013/ http://journalarticle.ukm.my/9013/1/9468-26163-1-PB.pdf
first_indexed	2023-09-18T19:53:45Z
last_indexed	2023-09-18T19:53:45Z
_version_	1777406391866097664

Measurement of Dosimetric Parameters and Dose Verification in Stereotactic Radiosurgery (SRS)

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