Kragl G, Wetterstedt S, Knäusl B, Lind M, McCavana P, Knöös T, McClean B, Georg D (2009) Dosimetric characteristics of 6 and 10 MV unflattened photon beams.
BJR SUPPLEMENT 25 1996 FREE
Med Phys 33(4):820–827Ĭhung H, Prado KL, Yi BY (2014) An analytical formalism to calculate phantom scatter factors for flattening filter free (FFF) mode photon beams. Vassiliev ON, Titt U, Kry SF, Pönisch F, Cillin MT, Mohan R (2006) Monte Carlo study of photon fields from a flattening filter-free clinical accelerator. Br J Radiol Suppl 25:84–151ĭalaryd M, Knöös T, Ceberg C (2014) Combining tissue-phantom ratios to provide a beam-quality specifier for flattening filter free photon beams. Report 12 of the Netherlands Commission on Radiation Dosimetryĭay MJ, Aird EGA (1996) Central axis depth dose data for use in radiotherapy. Van Gasteren JJM, Heukelom S, Jager HN, Mijnheer BJ, van der Laarse R, van Kleffens HJ, Vanselaar JLM, Westermann CF (1998) Determination and use of scatter correction factors of megavoltage photon beams. Purdy JA (1977) Relationship between tissue-phantom ratio and percentage depth dose.
BJR SUPPLEMENT 25 1996 SOFTWARE
Sun Nuclear Corporation (2014) SNC dosimetry™ software reference guide rev J-2, document 1230067 398, Viennaĭas IJ, Cheng CW, Watts RJ, Ahnesjö A, Gibbons J, Gibbons J, Li XA, Lowenstein J, Mitra RK, Simon WE, Zhu TC (2008) Accelerated beam data commissioning equipment and procedures: report of the TG-106 of the Therapy Physics Committee of the AAPM.
BJR SUPPLEMENT 25 1996 SERIES
Standard Imaging Inc (2012) IMSure QA™ software version 3.4 user manual, DOC #8-496-06Īndreo P, Burns DT, Hohlfeld K, Huq MS, Kanai T, Laitano F, Smythe VG, Vynckier S (2000) Absorbed dose determination in external beam radiotherapy, IAEA Technical Report Series No. Lippincott Williams & Wilkins, Philadelphia Khan FM (2003) The physics of radiation therapy, 3rd edn. European Society for Therapeutic Radiology and Oncology Physics for Clinical Radiotherapy Booklet No. It is advised that PDD to TMR conversion for FFF beams should be done with phantom scatter ratios appropriate to FFF beams, or the TMR should be directly measured if required.ĭutreix A, Bjärngard BE, Bridier A, Mijnheer B, Shaw JE, Svensson H (1997) Monitor unit calculation for high energy photon beams. The results found in this study indicate that the BJR Supplement 25 data should not be used for field sizes larger than 20 cm × 20 cm at depths greater than 15 cm for the 6 MV FFF beam. The disagreement between the measured and calculated TMR plots for the 6 MV FFF beam increased with depth and field size to a maximum of 1.7 % for a 40 cm × 40 cm field. The TMR plots calculated from PDD were within 1 % for the 10 MV and 6 MV flattened beams, for field sizes 3 cm × 3 cm to 40 cm × 40 cm inclusive, at depths measured beyond the depth of maximum dose. The BJR Supplement 25 data was used to convert the measured PDDs to TMRs and these were compared with the directly measured TMR data. PDD and TMR scans for a variety of field sizes were measured in water using a Sun Nuclear Corporation 3D SCANNER™ on a Varian TrueBeam linear accelerator in 6 MV, 10 MV and 6 MV FFF beams. This study assessed the validity of the conversion from percentage depth dose (PDD) to tissue maximum ratio (TMR) using BJR Supplement 25 data for flattened and flattening filter free (FFF) beams.
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