Diagnostic ultrasound exposure in man.
In his review of the AAPM statement on ultrasound, the author feels that allowing "some" research or demonstration on normal persons in the face of cautionary statements on as yet unknown side effects is an inconsistent position.  The use of videotapes and the development of simulators hacked by data banks are offered in place of tissue phantoms.
D004781:Environmental Exposure; D006805:Human Experimentation; D006801:Humans; D008452:Maximum Allowable Concentration; D014463:Ultrasonography; D014743:Videotape Recording