Background: The healthcare sector faces increasing pressure to improve environmental sustainability whilst continuing to meet the needs of patients.One strategy is to lower the avoidable demand on healthcare services, by reducing the number of surgical complications, such as anastomotic leak (AL).The aim of this study was to assess the environmenta

Abstract Background High-precision radiation therapy techniques such as IMRT or sterotactic radiosurgery, delivers more complex treatment fields than conventional techniques.The increased complexity causes longer dose delivery times for each fraction.The purpose of this work is to explore the radiobiologic effect of prolonged fraction delivery time