YY/T 0890-2013 Translated English of Chinese Standard. (YYT 0890-2013, YY/T0890-2013, YYT0890-2013): Electronic portal imaging device using in radiotherapy - Functional performance characteristics and test methodshttps://www.chinesestandard.net, 2016 M06 3 - 12 pages This Standard specifies the performance requirements and test methods for the electronic portal imaging devices. This Standard applies to the electronic portal imaging devices using the radiation beams of medical electron accelerators as radiation source in radiotherapy. |
Common terms and phrases
1MU radiation accompanying files ADJUST the window aluminum ladder Analytical method area and pixel Beijing calibration CHECK the accompanying conform contrast test card copper ladder cross lines decibel Detector area detector center Detector frame distance between detector dynamic scope EID surface electronic imaging devices electronic portal imaging field of view files by manufacturers frame signal GB/T given in unit gray-scale value image detector image distortion image receiving surface Imaging device delay ladder or copper line pairs Linearity of imaging Low contrast resolution maximum rectangular field normal treatment distance Nuclear Medicine number of distinguishable Number of visible OBTAIN the images parameters and/or conditions pixel pitch plane and isocenter portal imaging device radiation beam axis radiation field radiation source requirements given requirements specified resolution of imaging Signal-to-noise ratio spatial frequency Spatial resolution specified by manufacturers specified measuring conditions Standard Test methods PLACE test phantom visible pixels width and window window level window width