Enhancement 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 res...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/14515/1/Enhancement%20in%203D%20dosimetry%20measurement%20using%20polymer%20gel%20and%20MRI.pdf |
| _version_ | 1825945442685288448 |
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| author | Raba'eh, Khalid Ahmed Majali Saion, Elias Omer, Mohammed Ahmed Ali Mustafa, Iskandar Shahrim Abdul Rahman, Azhar Hussain, M. |
| author_facet | Raba'eh, Khalid Ahmed Majali Saion, Elias Omer, Mohammed Ahmed Ali Mustafa, Iskandar Shahrim Abdul Rahman, Azhar Hussain, M. |
| author_sort | Raba'eh, Khalid Ahmed Majali |
| 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)R2) of water proton. The dosimeters were irradiated with 60Co teletherapy γγ-ray source at a constant dose rate, receiving doses up to 30 Gy. The radiation polymerization occurs and increases with increasing initial dose. R2R2 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 | 2024-03-06T07:31:36Z |
| format | Article |
| id | upm.eprints-14515 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T07:31:36Z |
| publishDate | 2008 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-145152019-05-31T08:20:09Z http://psasir.upm.edu.my/id/eprint/14515/ Enhancement in 3D dosimetry measurement using polymer gel and MRI Raba'eh, Khalid Ahmed Majali Saion, Elias Omer, Mohammed Ahmed Ali Mustafa, Iskandar Shahrim Abdul Rahman, Azhar Hussain, M. 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)R2) of water proton. The dosimeters were irradiated with 60Co teletherapy γγ-ray source at a constant dose rate, receiving doses up to 30 Gy. The radiation polymerization occurs and increases with increasing initial dose. R2R2 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/14515/1/Enhancement%20in%203D%20dosimetry%20measurement%20using%20polymer%20gel%20and%20MRI.pdf Raba'eh, Khalid Ahmed Majali and Saion, Elias and Omer, Mohammed Ahmed Ali and Mustafa, Iskandar Shahrim and Abdul Rahman, Azhar and Hussain, M. (2008) Enhancement in 3D dosimetry measurement using polymer gel and MRI. Radiation Measurements, 43 (8). pp. 1377-1382. ISSN 1350-4487; ESSN: 1879-0925 https://www.sciencedirect.com/science/article/pii/S1350448708002436?via%3Dihub#! 10.1016/j.radmeas.2008.04.083 |
| spellingShingle | Raba'eh, Khalid Ahmed Majali Saion, Elias Omer, Mohammed Ahmed Ali Mustafa, Iskandar Shahrim Abdul Rahman, Azhar Hussain, M. Enhancement in 3D dosimetry measurement using polymer gel and MRI |
| title | Enhancement in 3D dosimetry measurement using polymer gel and MRI |
| title_full | Enhancement in 3D dosimetry measurement using polymer gel and MRI |
| title_fullStr | Enhancement in 3D dosimetry measurement using polymer gel and MRI |
| title_full_unstemmed | Enhancement in 3D dosimetry measurement using polymer gel and MRI |
| title_short | Enhancement in 3D dosimetry measurement using polymer gel and MRI |
| title_sort | enhancement in 3d dosimetry measurement using polymer gel and mri |
| url | http://psasir.upm.edu.my/id/eprint/14515/1/Enhancement%20in%203D%20dosimetry%20measurement%20using%20polymer%20gel%20and%20MRI.pdf |
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