1. The acoustic output of diagnostic machines;Whittingham,2000
2. Trends in diagnostic ultrasound exposure;Duck;Ultrasound Med Biol,1991
3. A survey of the acoustic outputs of diagnostic ultrasound equipment in current clinical use;Henderson;Ultrasound Med Biol,1995
4. Ultrasonic biophysics: thermal mechanisms;ter Haar,2004
5. Physical properties of tissue. A comprehensive reference book;Duck,1990