Simulation of Standing Wave Reduction in HIFU Transcranial Tumors Therapy

When the High Intensity Focused Ultrasound phase-controlled transducer is used for transcranial treatment of brain tumors, the continuous therapeutic ultrasound emitted by the phase-controlled transducer and the reflected wave at the high-acoustic impedance skull can easily form a standing wave.This results in loss of energy and possible damage to normal tissue.In this study, a numerical simulation model was built using 82-element phase-controlled transducers and volunteer skull CT data. According to the conditions of breaking the standing wave formation, the method of intracranial and standing wave reduction was studied by numerical simulation method, which provided a basis for the clinical safety, technical methods and theoretical data of brain tumors.