Erratum to: Tracking and Reducing SF₆ Usage in Radiation Oncology: A Step Toward Net-Zero Health Care Emissions Lichter KE, Bloom JR, Sheu RD, et al. Pract Radiat Oncol. 2023 Nov-Dec;13(6): e471-e474 (Practical Radiation Oncology (2023) 13(6) (e471–e474), (S1879850023001741), (10.1016/j.prro.2023.06.003))

The authors would like to highlight the following corrections (Abstract): "It is estimated that the approximate 15,042 LINACs globally may leak up to 64,884,185.9 CO2-eq/year, which is the equivalent greenhouse gas emissions of 13,981 gasoline-powered passenger vehicles driven for one year." (Main text) "The Christie, a cancer center in the United Kingdom calculated an average leakage of SF₆ from their LINACs to be 0.0005 kg/day, or 0.1835 kg/year. Using data from International Atomic Energy Agency's DIrectory of RAdiotherapy Centres (DIRAC)³, multiplied by the 23,507 kg CO₂ equivalent (CO₂-eq) conversion factor, it is estimated that the 15,042 LINACs globally may leak up to 64,884,185.9 CO₂-eq/year. This is the equivalent greenhouse gas emissions of 13,981 gasoline-powered passenger vehicles driven for one year." This should be revised to: (Abstract): "It is estimated that approximately 15,042 LINACs worldwide, in total, may leak up to 21,209,220 kg CO₂-eq per year, equivalent to the greenhouse gas emissions of 4,947 gasoline-powered or 18,731 electric-powered passenger vehicles driven for one year." (Main text) "The Christie, a cancer center in the United Kingdom, calculated an average leakage of SF₆ from their LINACs to be 0.06 kg/year. Using data from International Atomic Energy Agency's DIrectory of RAdiotherapy Centres (DIRAC)³ and applying a CO₂-equivalent (CO₂-eq) conversion factor of 23,507 kg per kg of SF₆, it is estimated that 15,042 LINACs worldwide may leak up to 21,209,220 kg CO₂-eq per year. This is equivalent to the greenhouse gas emissions of 4,947 gasoline-powered or 18,731 electric-powered passenger vehicles driven for one year."