Enhancements in 3D dosimetry measurement using polymer gel and MRI
The effects of varying the concentrations of cross-linker N, N-methyelene-bis-acrylamide (BIS) from 2% to 4%, and 2-hydroxyethylacrylate(HEA) monomer from 2% to 4% at 5% gelatin on the dose response of BIS–HEA–gelatin (BHEAG) aqueous polymer gel dosimeters have been studied using magnetic resonance...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Elsevier
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/6692/1/Enhancements%20in%203D%20dosimetry%20measurement%20using%20polymer%20gel%20and%20MRI.pdf |
| _version_ | 1825944093803413504 |
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| author | Ahmed Rabaeh, Khalid Saion, Elias Ali Omer, Mohammad Ahmed Shahrim, Iskandar Alrahman, Azhar A. Hussain, Muhammad Yousuf |
| author_facet | Ahmed Rabaeh, Khalid Saion, Elias Ali Omer, Mohammad Ahmed Shahrim, Iskandar Alrahman, Azhar A. Hussain, Muhammad Yousuf |
| author_sort | Ahmed Rabaeh, Khalid |
| collection | UPM |
| description | The effects of varying the concentrations of cross-linker N, N-methyelene-bis-acrylamide (BIS) from 2% to 4%, and 2-hydroxyethylacrylate(HEA) monomer from 2% to 4% at 5% gelatin on the dose response of BIS–HEA–gelatin (BHEAG) aqueous polymer gel dosimeters have been studied using magnetic resonance imaging (MRI) for relaxation rate (R2) of water proton. The dosimeters were irradiated with 60Co
teletherapy -ray source at a constant dose rate, receiving doses up to 30 Gy. The radiation polymerization occurs and increases with increasing initial dose. R2 is found to decrease mono-exponentially with depth inside the polymer gel and depend strongly upon the initial concentrations
of co-monomers (HEA and BIS). Dose–depth map for BHEAG gel was determined for different concentrations of co-monomer (HEA and BIS). The percentage dose depth was also evaluated which leads to a good agreement with the ionization chamber measurements. |
| first_indexed | 2024-03-06T07:10:30Z |
| format | Article |
| id | upm.eprints-6692 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:10:30Z |
| publishDate | 2008 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-66922015-12-03T04:07:33Z http://psasir.upm.edu.my/id/eprint/6692/ Enhancements in 3D dosimetry measurement using polymer gel and MRI Ahmed Rabaeh, Khalid Saion, Elias Ali Omer, Mohammad Ahmed Shahrim, Iskandar Alrahman, Azhar A. Hussain, Muhammad Yousuf The effects of varying the concentrations of cross-linker N, N-methyelene-bis-acrylamide (BIS) from 2% to 4%, and 2-hydroxyethylacrylate(HEA) monomer from 2% to 4% at 5% gelatin on the dose response of BIS–HEA–gelatin (BHEAG) aqueous polymer gel dosimeters have been studied using magnetic resonance imaging (MRI) for relaxation rate (R2) of water proton. The dosimeters were irradiated with 60Co teletherapy -ray source at a constant dose rate, receiving doses up to 30 Gy. The radiation polymerization occurs and increases with increasing initial dose. R2 is found to decrease mono-exponentially with depth inside the polymer gel and depend strongly upon the initial concentrations of co-monomers (HEA and BIS). Dose–depth map for BHEAG gel was determined for different concentrations of co-monomer (HEA and BIS). The percentage dose depth was also evaluated which leads to a good agreement with the ionization chamber measurements. Elsevier 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/6692/1/Enhancements%20in%203D%20dosimetry%20measurement%20using%20polymer%20gel%20and%20MRI.pdf Ahmed Rabaeh, Khalid and Saion, Elias and Ali Omer, Mohammad Ahmed and Shahrim, Iskandar and Alrahman, Azhar A. and Hussain, Muhammad Yousuf (2008) Enhancements in 3D dosimetry measurement using polymer gel and MRI. Radiation Measurements, 43 (8). pp. 1377-1382. ISSN 1350-4487 http://dx.doi.org/10.1016/j.radmeas.2008.04.083 10.1016/j.radmeas.2008.04.083 English |
| spellingShingle | Ahmed Rabaeh, Khalid Saion, Elias Ali Omer, Mohammad Ahmed Shahrim, Iskandar Alrahman, Azhar A. Hussain, Muhammad Yousuf Enhancements in 3D dosimetry measurement using polymer gel and MRI |
| title | Enhancements in 3D dosimetry measurement using polymer gel and MRI |
| title_full | Enhancements in 3D dosimetry measurement using polymer gel and MRI |
| title_fullStr | Enhancements in 3D dosimetry measurement using polymer gel and MRI |
| title_full_unstemmed | Enhancements in 3D dosimetry measurement using polymer gel and MRI |
| title_short | Enhancements in 3D dosimetry measurement using polymer gel and MRI |
| title_sort | enhancements in 3d dosimetry measurement using polymer gel and mri |
| url | http://psasir.upm.edu.my/id/eprint/6692/1/Enhancements%20in%203D%20dosimetry%20measurement%20using%20polymer%20gel%20and%20MRI.pdf |
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