Switching off one CT scanner overnight saves enough energy to power a household

Big environmental and financial savings can be achieved by turning off the machines, Aussie authors say.

Could the last radiographer to leave please switch off the CT scanners?

The machines are usually left running 24/7 in the event a patient needs emergency scans. 

But researchers say turning off one CT scanner overnight saves about 140kWh of energy a week, which is enough energy to power an average Australian household for a week. 

“Identifying and switching off surplus CT scanners in low-use times is a simple and scalable intervention that can achieve significant power, financial, and carbon savings with little to no impact on clinical workflow,” they wrote in the Journal of Medical Radiation Sciences.