Research is exploring the potential of soundwaves, including ultrasound, in treating cancer, with some studies suggesting it could be used to destroy cancer cells without surgery. The technology, which may involve microscopic bubbles, is being investigated for its potential to treat various types of cancer, as well as other diseases like Alzheimer's. The use of ultrasound in cancer treatment is already approved for some cases, and ongoing research is examining its potential to overcome limitations of other therapies, such as immunotherapy.