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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With some specific plan types the treatment planning system can over predict dose to targets resulting in potential under dose. the plan elements necessary to encounter this issue are sharp dose gradients with few simple and small axial cross section targets located off central axis.