While conventional radiography (CR) and computed tomography (CT) remain diagnostic staples in emergency settings, ultrasound (US) is a critical tool offering a rapid, dynamic, and noninvasive alternative for acute musculoskeletal (MSK) pathologies assessment. Prompt identification of conditions such as unstable fractures, soft tissue or muscular hematomas, joint effusions, and tendon ruptures is essential to prevent or mitigate long-term patient morbidity. This review summarizes the role of US in the emergency department, providing a practical overview of targeted scanning techniques and key sonographic signs. Additionally, common diagnostic pitfalls and effective escalation pathways are discussed to streamline clinical decision-making and optimize timely patient management.

Healthcare accounts for 4.4-4.5% of global greenhouse gas emissions, with computed tomography (CT) representing one of the most resource-intensive and energy-demanding diagnostic modalities. Sustainability should be integrated as a core component of quality in CT practice, achieving the perfect balance between diagnostic excellence and environmental responsibility. Several key intervention areas can be identified. CT scanners consume substantial amounts of energy, with 44-72% used during nonproductive idle periods. Potential mitigation strategies include protocol optimization, automated power-down systems, and infrastructure improvements. The current "store-everything" approach to CT datasets generates a considerable carbon footprint; adopting "digital temperance" by retaining only clinically relevant images can reduce storage-related emissions. Although workstations consume less energy than scanners, their cumulative impact can be reduced through automated policies and optimized hardware lifecycle management. Iodinated contrast media persist in aquatic ecosystems and may generate toxic by-products. Sustainable strategies include personalized weight-based dosing, multi-energy CT to reduce contrast volume, and recovery or recycling programs. Single-use consumables and the environmental costs of artificial intelligence were also addressed. A 17-item action list was developed to translate the evidence-informed recommendations into practical actions for sustainable CT practice. The transition toward environmentally responsible CT practice is an ethical and professional necessity that can no longer be delayed. This position paper identifies the key challenges and proposes practical, evidence-informed strategies to transform resource-consuming CT practices into actionable and sustainable workflows, while maintaining clinical effectiveness.

Electroporation (EP) transiently increases cell membrane permeability through the application of controlled electric pulses. Bipolar needle electrodes have been developed to simplify EP procedures by reducing the number of electrode insertions while improving control of electric field geometry and spatial confinement. This technical note describes the design principles, electric field behavior, and image-guided implementation of single-needle bipolar electrodes for EP applications in both soft and bone tissues. Electric field simulations and preclinical investigations were performed to assess field distribution, safety, and tissue selectivity. The practical implementation of the bipolar configuration is illustrated through representative image-guided examples from multiple institutions across different anatomical settings. The single-needle design enables minimally invasive procedures with predictable field control and limited extension to surrounding structures, even in anatomically complex or previously treated regions. Overall, bipolar electrodes represent a versatile and reproducible technological solution for electroporation-based treatments, supporting precise and tissue-sparing image-guided interventions.