Energy consumption of new and old GE MRI models Geraldine Tran MD1, Maria Pamatmat MPH1, Craig Devincent RT1, Gail Lee MS2, Alastair Martin PhD1 1 Department of Radiology and Biomedical Imaging, University of California, San Francisco, California 2 Office of Sustainability, University of California, San Francisco, California Introduction US health care is large producer of carbon emissions through the world 2nd most energy-intensive building 7th largest producer of CO2 worldwide 10% of CO2 generated in country 200,000 annual deaths in US related to air pollution Radiology is major energy consumer within healthcare center Federal agencies focused on sustainability in imaging equipment Opportunities for energy savings due to variability of function and nighttime consumption Radiology top 2 energy consumer at UCSF UCSF MRI Inventory: 17 clinical, 2 research Objectives Describe energy usage of UCSF’s MRI machines Compare energy usage of new GE Premier with older models Identify areas for energy conservation Methods Results Results Conclusion GE Signa Premier may be more energy efficient than older models Standby uses least amount of energy and should be maximized Energy usage differences could be due to: Improvements in engineering Location Water chillers for MR750 and HDx are remote and several stories from their magnets which may create longer and higher pressure circuits for cooling system Next steps: Analyze exam types across all 3 GE scanners Investigate scanners designed for energy efficiency Promote standby mode usage when appropriate GE Signa Premier 3T GE Discovery MR750 3T GE HDx 3T 2018 Software 27x Outpatient 2009 Software 26x Inpatient/outpatient 2005 Software 23x Outpatient Power measured at 1 sec intervals over 4-10 hours a day Area under curve (AUC) estimated power (kwh) Equation: “y” kw * “x” hours = “power” kwh