Numerical Investigation of Heating Characteristics Depending on Ultrasound Irradiation Position During HIFU Treatment.

High Intensity Focused Ultrasound (HIFU) is a minimally invasive treatment that focuses ultrasound waves emitted from a transducer into the interior of cancerous tissue and ablates the tissue with the thermal energy generated at the focal point. Generally, ultrasound waves are reflected when they hit high-density materials such as bone, and there is a risk of damaging normal tissue. Therefore, it has been difficult to treat areas surrounded by bone with HIFU. In this study, the reflection of ultrasound from bone surfaces during HIFU treatment was analyzed by computer simulation using an anatomical human model.