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The electrical energy consumption of building systems, lighting, and IT equipment was primarily determined through measurements; other energy consumption figures were estimated using technical data and meteorological data. For the calculation of GHG emissions and primary energy consumption, a specialised tool using specific conversion factors from established environmental databases was developed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Our hospital switched from coal-based electricity to renewable electrical energy (hydropower), leading to a reduction in primary energy consumption (\u221264%) and GHG emissions (\u221292%) of the radiology department. Following this change, without a reduction in direct energy consumption, the MRI systems showed a marked reduction in primary energy consumption, although still having the highest primary energy consumption per exam (49.2\u2009kWh compared to 13.9\u2009kWh (CT1) and 48.9\u2009kWh (IR)). After the transition to renewable energy, the major source of GHG emissions shifted from electrical energy toward materials\/pharmaceuticals.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Our findings support the transition to renewable energy sources for electricity, as a key strategy for reducing GHG emissions and primary energy demand of radiology departments. Following this shift, selecting materials and pharmaceuticals with lower emissions and primary energy factors can further mitigate the environmental impact.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Key Points<\/jats:title>\n                    <jats:p>\n                      <jats:bold>\n                        <jats:italic>Question<\/jats:italic>\n                      <\/jats:bold>\n                      Radiology departments are significant sources of energy consumption and GHG emissions.\n                    <\/jats:p>\n                    <jats:p>\n                      <jats:bold>\n                        <jats:italic>Findings<\/jats:italic>\n                      <\/jats:bold>\n                      Adoption of renewable energy reduces primary energy consumption and GHG emissions.\n                    <\/jats:p>\n                    <jats:p>\n                      <jats:bold>\n                        <jats:italic>Critical relevance statement<\/jats:italic>\n                      <\/jats:bold>\n                      GHG emissions in a radiology department can be significantly reduced by transitioning to renewable energy sources. After this shift, emissions will mainly depend on the materials and pharmaceuticals used, such as disposable supplies and contrast agents.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s13244-026-02436-9","type":"journal-article","created":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T23:22:50Z","timestamp":1792106570000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Environmental impact of a radiology department: greenhouse gas emissions and primary energy accounting and strategies for sustainable practice"],"prefix":"10.1186","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5151-0866","authenticated-orcid":false,"given":"Stefania","family":"Rizzo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"R\u00fcesch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marco","family":"Budin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rolf","family":"Wyttenbach","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ermidio","family":"Rezzonico","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Filippo","family":"Del Grande","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,10,15]]},"reference":[{"key":"2436_CR1","doi-asserted-by":"publisher","first-page":"215","DOI":"10.3390\/jcm12010215","volume":"12","author":"E Picano","year":"2022","unstructured":"Picano E, Mangia C, D\u2019Andrea A (2022) Climate change, carbon dioxide emissions, and medical imaging contribution. 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