TEMPERATURE RISE GENERATED BY DIAGNOSTIC ULTRASOUND IN A TRANSCRANIALPHANTOM

Temperature rises generated by diagnostic ultrasound from a modified c ommercial system (Sonos 1000 Hewlett Packard) in a transcranial phanto m that consists of human temporal bone and tissue-mimicking material a re measured, Significant temperature rises were found at the external and internal temporal bone surfaces, The experimental results are comp ared with cranial thermal indices (TIG) developed by the American Inst itute of Ultrasound in Medicine and the National Electrical Manufactur ers Association for various modes, For all the modes compared, TIC und erestimated temperature rise at the external temporal bone surface, Th e differences between the data and temperature rises predicted by TIC can be attributed to transducer surface heating.