Canadian data is current through March 2018. All of the data comes from Health Canada, except for the categories Manufacturer Parent Company and Product Classification.
The Parent Company and the Product Classification were added by ICIJ.
The parent company information is based on 2017 public records. The device classification information comes from FDA’s Product Classification by Review Panel, based on matches of recall data from the U.S. and Canada.
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During beam delivery tolerance values are used to do checks of any unexpected movements. the problem is that the static tolerances from the calibration files (loaded database) are used for beam delivery instead of the machine calculated values. a fault will only occur if the loaded database is incorrect.