Ultrasound Fusion in Interventional Radiology: A Practical Guide to Procedural Applications

Ultrasound (US) fusion, defined as coregistration of cross-sectional images and real-time planar US, has emerged as a powerful tool to enhance the safety and accuracy of image-guided interventions. Computed tomography (CT), magnetic resonance (MR) imaging, and positron emission tomography (PET) can be integrated with conventional US using fusion navigation software, which is available from most major vendors. The US fusion technique enables precise intraprocedural localization of target lesions. The software is broadly accessible, intuitive to use, and suitable for implementation by both interventional and diagnostic radiologists in community and academic settings. In this narrative review, the authors present a comprehensive overview of US fusion-guided interventions, detailing the technical approach and providing case examples from a major teaching hospital.