An Analysis of Lesion Development in the Brain and in Plastics by High‐Intensity Focused Ultrasound at Low‐Megahertz Frequencies

摘要: Thermal factors are believed to play a dominant role in the development of structural and functional effects irradiation nervous system with focused ultrasound at low‐megahertz frequencies. Similar mechanisms postulated underlie methacrylate, which is frequently used as test material evaluate influence various on results obtained. This study was undertaken determine if thermal alone can explain trackless focal alterations (lesions) all their measurable characteristics plastic well brain. A purely model assumed analytical prediction lesion size shape for varying values ultrasonic constants controllable variables (frequency, focusing, dosage, target depth, etc.) attempted. An empirical equation describe axial radial energy distribution focus water derived. Appropriate heat transfer ...