Beyond the Machine: How Radiology’s Sustainability Focus is Shifting to the Supply Chain
For decades, healthcare sustainability efforts have centered on energy consumption – optimizing MRI machine usage, switching to LED lighting, and implementing smart building technologies. However, a groundbreaking fresh study published in the Journal of the American College of Radiology (JACR) reveals a surprising truth: in diagnostic ultrasound, the biggest carbon footprint doesn’t come from the equipment itself, but from the disposable supplies and, surprisingly, the linens used in each procedure. This finding is prompting a major re-evaluation of sustainability strategies within radiology departments and beyond.
The Unexpected Culprit: Linens and Disposables
The study, titled “Harmonizing Diagnostic Ultrasound Practice with Environmental Sustainability: A Life Cycle Assessment of Diagnostic Ultrasound in a Single Adult University Hospital,” found that linens account for 35% and single-use supplies 34% of ultrasound’s greenhouse gas emissions. In contrast, the production (7%) and energy use (3%) of the ultrasound equipment itself were comparatively minor contributors. This challenges the conventional wisdom that focusing solely on energy efficiency is the key to reducing radiology’s environmental impact.

Katherine Frederick-Dyer, MD, Director of Body MRI at Vanderbilt Health and lead author of the study, explains, “Although linens and disposable supplies were the greatest contributors to the carbon footprint of ultrasound, strategies to optimize their use can be implemented across radiology department modalities for an even greater impact.”
A Systems-Based Approach to Sustainability
This shift in understanding necessitates a more holistic, “systems-based” approach to sustainability in radiology. It’s no longer enough to simply purchase energy-efficient equipment. Departments must now scrutinize their entire supply chain, from the sourcing of materials to the disposal of waste.
Florence X. Doo, MD, MA, Director of Innovation at the University of Maryland Medical Intelligence Imaging Center, and guest editor of the JACR’s April Focus on Sustainability issue, emphasizes this point. “We need to think more about how our technological processes, from end to end, contribute to health care emissions…most of the technology in a health system lives with us in radiology—MRI machines, CT machines and now AI.”
The Rise of Eco-Friendly Alternatives
The study encourages the adoption of more sustainable materials. This includes exploring sustainably sourced organic cotton for linens and seeking compostable alternatives to traditional plastic products. Radiology departments are beginning to investigate options like reusable probe covers and sterilization methods that reduce the need for single-use items.
Beyond ultrasound, this principle applies across all imaging modalities. Consider the environmental impact of contrast agents, the packaging of supplies, and even the transportation of materials to the hospital.
AI and Sustainability: A Complex Relationship
While artificial intelligence (AI) is often touted as a tool for improving efficiency and reducing waste in healthcare, its environmental impact is also coming under scrutiny. The Radiology Business reports that practices tied to private equity and hospitals charge significantly more, potentially indicating increased resource consumption. The American College of Radiology (ACR) projects a five-fold growth in FDA approvals of AI imaging products by 2035, raising questions about the energy demands and resource requirements of these technologies.
The Future of Sustainable Radiology
The future of radiology sustainability isn’t just about reducing environmental impact; it’s also about operational efficiency and quality improvement. As Dr. Doo notes, “Sustainability is starting to be framed more as a quality improvement and operational efficiency problem. We need to do this right to reduce waste, improve our energy and optimize our workflow so we can do better as radiologists.”
This means embracing data-driven approaches to identify areas for improvement, collaborating with suppliers to source more sustainable products, and fostering a culture of environmental responsibility within radiology departments.
FAQ: Radiology and Sustainability
Q: What is a life cycle assessment?
A: A life cycle assessment evaluates the environmental impact of a product or service throughout its entire lifespan, from raw material extraction to disposal.
Q: What can radiology departments do to reduce their linen consumption?
A: Explore reusable alternatives where appropriate, optimize linen ordering practices, and consider using linens made from sustainably sourced materials.
Q: Is AI inherently unsustainable?
A: Not necessarily, but the energy consumption and resource requirements of AI technologies need to be carefully considered and optimized.
Q: What role does supply chain stewardship play in radiology sustainability?
A: It involves working with suppliers to ensure that products are sourced responsibly, packaged efficiently, and transported with minimal environmental impact.
Did you know? Pediatric patients are exposed to ionizing radiation in imaging at higher rates in non-children’s hospitals than in dedicated children’s hospitals, highlighting the importance of optimized imaging protocols and equipment settings.
Pro Tip: Start minor! Focus on one area of your department – like reducing disposable supply waste – and build from there. Every effort, no matter how small, contributes to a more sustainable future.
Want to learn more about sustainable practices in radiology? Explore the Journal of the American College of Radiology and share your department’s sustainability initiatives in the comments below!
