YY 0775-2010: Translated English of Chinese Standard. YY0775-2010: Teleradiotherapy treatment planning system accuracy of dosimetric calculation and test methods for high energy X(Gamma) beam
https://www.chinesestandard.net, 2016 M06 3 - 23 pages
This Standard specifies the accuracy of dosimetric calculation and test methods of Radiotherapy Treatment Planning Systems (RTPS). This Standard applies to RTPS with dosimetric calculation and display function of high energy X rays (4 MV ~ 25 MV), 60Co rays remote radiotherapy treatment on photon radiation. This Standard does not apply to the radiation treatment planning systems that are used by stereotactic radiotherapy, intensity modulated radiation therapy (IMRT) or other specialized radiotherapy techniques. However, the developers are encouraged to use this Standard in development, and use as reference standard in verifying dosimetric calculation algorithm.
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11 Asymmetric 18 MV beams 9 cm Absorbed dose according to formula allowable error axis is blocked B.7 Test beam central axis beam dose setting calculate error according Calculate the dose cm depth cm field center cm open field cm radiation field complex geometric conditions conduct test example dose at central Dose calculation point dose point depth dosimetric calculation algorithm edge of radiation error between RTPS’s field 10 cm field center open field central axis field This test GB/T high energy X-ray IAEA No.1540 Technical linear accelerator No.1540 Technical Report nominal SSD conditions normalized relative dose Nuclear medicine off-axis distance open reference field outer edge point depth dmax radiation beam radiation field central radiotherapy reference field central reference values related nominal SSD relative error results shall comply RTPS’s calculated values simple geometric conditions Square field SSD=100 cm Figure test data package test example 1a values and reference water model wedge plate