Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon Energies
Background: Modern radiotherapy techniques are using advanced algorithms; however, phantoms used for quality assurance have homogeneous density; accordingly, the development of heterogeneous phantom mimicking human body sites is imperative to examine variation between planned and delivered doses. Ob...
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| Format: | Article |
| Language: | English |
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Shiraz University of Medical Sciences
2022-06-01
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| Series: | Journal of Biomedical Physics and Engineering |
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| Online Access: | https://jbpe.sums.ac.ir/article_48340_58b86ff782ebeb39a902762115a4565a.pdf |
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| author | Vinod Kumar Gangwar Om Prakash Gurjar Lalit Kumar Avinash Agarwal Vineet Kumar Mishra Surendra Prasad Mishra Saket Pandey |
| author_facet | Vinod Kumar Gangwar Om Prakash Gurjar Lalit Kumar Avinash Agarwal Vineet Kumar Mishra Surendra Prasad Mishra Saket Pandey |
| author_sort | Vinod Kumar Gangwar |
| collection | DOAJ |
| description | Background: Modern radiotherapy techniques are using advanced algorithms; however, phantoms used for quality assurance have homogeneous density; accordingly, the development of heterogeneous phantom mimicking human body sites is imperative to examine variation between planned and delivered doses. Objective: This study aimed to analyze the accuracy of planned dose by different algorithms using indigenously developed heterogeneous thoracic phantom (HT). Material and Methods: In this experimental study, computed tomography (CT) of HT was done, and the density of different parts was measured. The plan was generated on CT images of HCP with 6 and 15 Megavoltage (MV) photon beams using different treatment techniques, including three-dimensional conformal radiotherapy (3D-CRT), intensity-modulated radiation therapy (IMRT), and volumetric modulated arc therapy (VMAT). Plans were delivered by the linear accelerator, and the dose was measured using the ion chamber (IC) placed in HT; planned and measured doses were compared. Results: Density patterns for different parts of the fabricated phantom, including rib, spine, scapula, lung, chest wall, and heart were 1.849, 1.976, 1.983, 0.173, 0.855, and 0.833 g/cc, respectively. Variation between planned and IC estimated doses with the tolerance (±5%) for all photon energies using different techniques. Acuros-XB (AXB) showed a slightly higher variation between computed and IC estimated doses using HCP compared to the analytical anisotropic algorithm (AAA). Conclusion: The indigenous heterogeneous phantom can accurately simulate the dosimetric scenario for different algorithms (AXB or AAA) and be also utilized for routine patient-specific QA. |
| first_indexed | 2024-12-12T06:04:11Z |
| format | Article |
| id | doaj.art-8367f840484a4660864da7507e80bd46 |
| institution | Directory Open Access Journal |
| issn | 2251-7200 |
| language | English |
| last_indexed | 2024-12-12T06:04:11Z |
| publishDate | 2022-06-01 |
| publisher | Shiraz University of Medical Sciences |
| record_format | Article |
| series | Journal of Biomedical Physics and Engineering |
| spelling | doaj.art-8367f840484a4660864da7507e80bd462022-12-22T00:35:19ZengShiraz University of Medical SciencesJournal of Biomedical Physics and Engineering2251-72002022-06-0112323724410.31661/jbpe.v0i0.2012-124648340Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon EnergiesVinod Kumar Gangwar0Om Prakash Gurjar1Lalit Kumar2Avinash Agarwal3Vineet Kumar Mishra4Surendra Prasad Mishra5Saket Pandey6PhD Candidate, Department of Physics, M.J.P. Rohilkhand University, Bareilly Uttar Pradesh, IndiaPhD, Government Cancer Hospital, Mahatma Gandhi Memorial Medical College, Indore-452001, IndiaPhD, Department of Applied Science & Humanities, Dr. A.P.J Abdul Kalam Technical University, Lucknow, IndiaPhD, Department of Physics Bareilly College Bareilly, Uttar Pradesh, IndiaMSc, Apollomedics Hospital, Lucknow, IndiaPhD, Department of Radiation Oncology, Ram Manohar Lohia Medical sciences Lucknow, IndiaMD, Medical Physics Division & amp Department of Radiation Oncology, Apollomedics Hospital, Lucknow, IndiaBackground: Modern radiotherapy techniques are using advanced algorithms; however, phantoms used for quality assurance have homogeneous density; accordingly, the development of heterogeneous phantom mimicking human body sites is imperative to examine variation between planned and delivered doses. Objective: This study aimed to analyze the accuracy of planned dose by different algorithms using indigenously developed heterogeneous thoracic phantom (HT). Material and Methods: In this experimental study, computed tomography (CT) of HT was done, and the density of different parts was measured. The plan was generated on CT images of HCP with 6 and 15 Megavoltage (MV) photon beams using different treatment techniques, including three-dimensional conformal radiotherapy (3D-CRT), intensity-modulated radiation therapy (IMRT), and volumetric modulated arc therapy (VMAT). Plans were delivered by the linear accelerator, and the dose was measured using the ion chamber (IC) placed in HT; planned and measured doses were compared. Results: Density patterns for different parts of the fabricated phantom, including rib, spine, scapula, lung, chest wall, and heart were 1.849, 1.976, 1.983, 0.173, 0.855, and 0.833 g/cc, respectively. Variation between planned and IC estimated doses with the tolerance (±5%) for all photon energies using different techniques. Acuros-XB (AXB) showed a slightly higher variation between computed and IC estimated doses using HCP compared to the analytical anisotropic algorithm (AAA). Conclusion: The indigenous heterogeneous phantom can accurately simulate the dosimetric scenario for different algorithms (AXB or AAA) and be also utilized for routine patient-specific QA.https://jbpe.sums.ac.ir/article_48340_58b86ff782ebeb39a902762115a4565a.pdfalgorithmscomputed tomographyhuman bodylung phantomsvolumetric-modulated arc therapyribs |
| spellingShingle | Vinod Kumar Gangwar Om Prakash Gurjar Lalit Kumar Avinash Agarwal Vineet Kumar Mishra Surendra Prasad Mishra Saket Pandey Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon Energies Journal of Biomedical Physics and Engineering algorithms computed tomography human body lung phantoms volumetric-modulated arc therapy ribs |
| title | Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon Energies |
| title_full | Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon Energies |
| title_fullStr | Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon Energies |
| title_full_unstemmed | Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon Energies |
| title_short | Dosimetric Evaluation of the Treatment Plan on Indigenous Heterogeneous Phantoms using Analytical Anisotropic Algorithm and Acuros-XB Algorithm for Different Photon Energies |
| title_sort | dosimetric evaluation of the treatment plan on indigenous heterogeneous phantoms using analytical anisotropic algorithm and acuros xb algorithm for different photon energies |
| topic | algorithms computed tomography human body lung phantoms volumetric-modulated arc therapy ribs |
| url | https://jbpe.sums.ac.ir/article_48340_58b86ff782ebeb39a902762115a4565a.pdf |
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