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

Ultrasound fusion, defined as co-registration of cross-sectional images and real-time planar ultrasound, has emerged as a powerful tool to enhance the safety and accuracy of image-guided interventions. Computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) can be integrated with conventional ultrasound using fusion navigation software, which is available from most major vendors. The ultrasound 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, we present a comprehensive overview of ultrasound fusion-guided interventions, detailing the technical approach and providing case examples from a major teaching hospital.