Focused ultrasound (FUS) therapy, a sound wave treatment technology that counts Hong Kong’s tycoon Li Ka-shing among its backers, has reached an “inflection” point after 1 million patients worldwide adopted it as an alternative to surgery, radiation, drugs and other therapies, said the doctor who pioneered its use.One million patients had undergone FUS therapy since the technology was introduced six decades ago, including around 175,000 cases that involved liver tumours, according to data...