In this episode, we sit down with Dr. Kullervo Hynynen, a key figure in biomedical ultrasound and image-guided therapeutics. Starting from his academic roots at the University of Aberdeen to his current roles at the Sunnybrook Research Institute and the University of Toronto, Dr. Hynynen has played an instrumental role in advancing medical imaging. He has been at the forefront of investigating the use of focused ultrasound for various medical procedures such as non-invasive surgery, vascular surgery, targeted drug delivery, and gene therapy. Without his groundbreaking contributions, the medical field might not possess the capability to execute MR-guided focused ultrasound surgeries today. For those curious about the specifics of his contributions, the Focused Ultrasound Society has a comprehensive website detailing milestones in the therapy's development, where Dr. Hynynen's name frequently appears. Dr. Hynynen leads an extensive group at Sunnybrook, comprising approximately 50 to 100 members. These professionals span across the vast spectrum of focused ultrasound applications in both animals and humans.