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10.1120/jacmp.v13i6.3803 http://scihub22266oqcxt.onion/10.1120/jacmp.v13i6.3803 C5718527!5718527!23149774     free     free     free Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       J+Appl+Clin+Med+Phys 2012 ; 13 (6): 318-25 Nephropedia Template TP {{tp|p=23149774|t=2012. Ion recombination correction factors (Pion) for Varian TrueBeam high?dose?rate therapy beams |pdf=|usr=}}{{23149774}} gab.com Text Ion recombination correction factors (Pion) for Varian TrueBeam high dose rate therapy beams JO: J Appl Clin Med Phys http://www.kidney.de/pget.php?&tw=1&pmid=23149774 #FOAvip Ion recombination is approximately corrected for in the Task Group 51 protocol by Pion, which is calculated by a two?voltage measurement. This measurement approach may be a poor estimate of the true recombination, particularly if Pion is large (greater than 1.05). Concern exists that Pion in high?dose?per?pulse beams, such as flattening filter free (FFF) beams, may be unacceptably high, rendering the two?voltage measurement technique inappropriate. Therefore, Pion was measured for flattened beams of 6, 10, 15, and 18 MV and for FFF beams of 6 and 10 MV. The values for the FFF beams were verified with 1/V versus 1/Q curves (Jaffé plots). Pion was also measured for electron beams of 6, 12, 16, 18, and 20 MeV on a traditional accelerator, as well as on the high?dose?rate Varian TrueBeam accelerator. The measurements were made at a range of depths and with PTW, NEL, and Exradin Farmer?type chambers. Consistent with the increased dose per pulse, Pion was higher for FFF beams than for flattening filter beams. However, for all beams, measurement locations, and chambers examined, Pion never exceeded 1.018. Additionally, Pion was always within 0.3% of the recombination calculated from the Jaffé plots. We conclude that ion recombination can be adequately accounted for in high?dose?rate FFF beams using Pion determined with the standard two?voltage technique.PACS numbers: 87.56.?v, 87.56.Da Twit Text FOAVip Ion recombination correction factors (Pion) for Varian TrueBeam high dose rate therapy beams ????J Appl Clin Med Phys http://www.kidney.de/pget.php?&tw=1&pmid=23149774 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=23149774 #FOAvip English Wikipedia <ref>{{Cite pmid|23149774}}</ref> Ion recombination correction factors (Pion) for Varian TrueBeam high?dose?rate therapy beams #MMPMID23149774 Kry SF; Popple R; Molineu A; Followill DS J Appl Clin Med Phys 2012[Nov]; 13 (6): 318-25 PMID23149774show ga Ion recombination is approximately corrected for in the Task Group 51 protocol by Pion, which is calculated by a two?voltage measurement. This measurement approach may be a poor estimate of the true recombination, particularly if Pion is large (greater than 1.05). Concern exists that Pion in high?dose?per?pulse beams, such as flattening filter free (FFF) beams, may be unacceptably high, rendering the two?voltage measurement technique inappropriate. Therefore, Pion was measured for flattened beams of 6, 10, 15, and 18 MV and for FFF beams of 6 and 10 MV. The values for the FFF beams were verified with 1/V versus 1/Q curves (Jaffé plots). Pion was also measured for electron beams of 6, 12, 16, 18, and 20 MeV on a traditional accelerator, as well as on the high?dose?rate Varian TrueBeam accelerator. The measurements were made at a range of depths and with PTW, NEL, and Exradin Farmer?type chambers. Consistent with the increased dose per pulse, Pion was higher for FFF beams than for flattening filter beams. However, for all beams, measurement locations, and chambers examined, Pion never exceeded 1.018. Additionally, Pion was always within 0.3% of the recombination calculated from the Jaffé plots. We conclude that ion recombination can be adequately accounted for in high?dose?rate FFF beams using Pion determined with the standard two?voltage technique.PACS numbers: 87.56.?v, 87.56.Da äIon recombination correction factors (Pion) for Varian TrueBeam high?d(epmc).pdf DeepDyve Pubget Overpricing