2004NEMA UD 3-2004 STANDARD FOR REAL-TIME DISPLAY OF THERMAL AND MECHANICAL ACOUSTIC OUTPUT INDICES ON DIAGNOSTIC ULTRASOUND EQUIPMENT (REVISION 2; Incorporates Errata)
1998NEMA UD 3-1998 Standard for Real-Time Display of Thermal and Mechanical Acoustic Output Indices on Diagnostic Ultrasound Equipment
1992NEMA UD 3-1992 Standard for Real-Time Display of Thermal and Mechanical Acoustic Output Indices on Diagnostic Ultrasound Equipment