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_c19188 _d19188 |
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| 003 | OSt | ||
| 005 | 20230411103550.0 | ||
| 008 | 230411b xxu||||| |||| 00| 0 eng d | ||
| 040 |
_aAIKTC-KRRC _cAIKTC-KRRC |
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| 100 |
_920492 _aNigam, Jitendra |
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| 245 | _aGamma passing rate – correlation with patient specific quality assurance devices using two photon energies in pelvic IMRT | ||
| 250 | _aVol.60(9), Sep | ||
| 260 |
_aNew Delhi _bCSIR _c2022 |
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| 300 | _a773-782p. | ||
| 520 | _aThe effect on Gamma Passing Rate is studied by changing the Photon Energy in the Patient Specific Quality Assurancein Pelvic IMRT using EPID and MatriXX keeping PSQA device at Isocenter. Dose verification of 62 patients, sufferingfrom pelvic malignancies and treated with Intensity modulated radiation therapy (IMRT), with EPID and MatriXX usinggamma criteria of 3%/3 mm, 3%/2 mm, 2%/3 mm, 2%/2 mm and investigated the effect on Gamma Passing Rate (%GP) bychanging beam energy from 6 MV to 10 MV. The results demonstrated that the behavior of gamma passing rate decreases ascriteria is changed from 3%/3 mm to strict criteria. The mean gamma passing rate for 6 MV beam were (%GP±StandardDeviation σ) 99.64±0.81, 99.45±1.08, 97.57±2.12, 96.17±2.63 using the criteria 3%/3 mm, 3%/2 mm, 2%/3 mm, 2%/2 mmrespectively in EPID. For MatriXX, the mean %GP were 96.69±4.11, 93.85±5.31, 88.17±10.63, 82.2±12.28 respectively.For 10 MV, the mean (%GP±Std. Dev) were 99.64±0.81, 99.45±1.08, 97.57±2.12, 96.17±2.63 for in EPID, 96.69±4.11,93.85±5.31, 88.17±10.63, 82.2±12.28 for MatriXX respectively. Difference between %GP for 6 MV and 10 MV beam were-0.01, -0.11, 1.08, 1.61 with gamma criteria of 3%/3 mm, 3%/2 mm, 2%/3 mm, 2%/2 in EPID. For MatriXX, differencebetween %GP for 6 MV and 10 MV beam were -0.40, -0.24, 0.96, 1.62 respectively. It can be concluded that applying morestrict gamma criteria results in low gamma passing rate. There is marked difference in Gamma Passing Rate (%GP) withchange in photon energy. | ||
| 650 | 0 |
_94642 _aHumanities and Applied Sciences |
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| 700 |
_914967 _aPiyush Kumar |
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| 773 | 0 |
_tIndian journal of pure & applied physics (IJPAP) _dNew Delhi CSIR-NISCAIR _x0019-5596 |
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| 856 |
_uhttp://op.niscair.res.in/index.php/IJPAP/article/view/55453 _yClick here |
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| 942 |
_2ddc _cAR |
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