Answer to Question 1
International System of Units
Rationale: The SI System or International System of Units allows for interconversion of units across the sciences. The SI system has been adopted for radiation units.
Answer to Question 2
high speed film and screens
Rationale: High speed film and screens paired will reduce overall patient dose, but will result in a lack of detail of the part. Screens constructed of rare earth are four times faster than calcium tungstate screens.