Anyone who thinks these are comparable should withhold judgement until they learn more about how different kinds of "radiation" work. It's an overloaded term.

Anyone who thinks these are comparable should withhold judgement until they learn more about how different kinds of "radiation" work. It's an overloaded term. X-rays generated by slamming accelerated electrons into a metal plate turn off immediately once power is removed. There is no residual radioactive decay, because there were no unstable or decaying isotopes at any point in the process. It's not a nuclear process. It does not involve the nucleus. In contrast, the Goiânia accident was the result of beta radiation from a pile of decaying Cesium 137 that could only be contained, not turned off.