Acoustic Output Reporting Tables
Vscan Extend
–
User Manual
7-3
5721203-100
Rev. D
Acoustic Output Reporting Tables
Definitions, symbols and abbreviations
The following definitions, symbols and abbreviations are used in
the acoustic output reporting tables in this chapter:
Table 7-1:
Definitions, symbols and abbreviations
IEC
FDA
Meaning—IEC 60601-2-37 / FDA & NEMA UD2, UD3
Acoustic Attenuation Coefficient
/ Derating factor (usually 0.3 dB/cm-MHz)
-12db Output Beam Area
/ Active aperture area
Normalizing Coefficient
Equivalent Aperture Diameter
/ (same)
Pulse Beam Width
/ Beam diameter at –6 dB
Equivalent Beam Diameter
Acoustic Working Frequency
/ Center frequency
Pulse-Average Intensity
Attenuated Pulse-Average Intensity
Pulse-Intensity Integral
Attenuated Pulse-Intensity Integral
Temporal-Average Intensity
Attenuated Temporal-Average Intensity
/ (at depth z)
Spatial-Peak Temporal-Average Intensity
Attenuated Spatial-Peak Temporal-Average Intensity
Mechanical Index
Output Power
/ Time average acoustic power at the source
Attenuated Output Power
/ Time average acoustic power derated to depth z
Summary of Contents for Vscan Extend
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Page 56: ...Safety 2 30 Vscan Extend User Manual 5721203 100 Rev D ...
Page 94: ...Preparing Vscan Extend for Use 3 38 Vscan Extend User Manual 5721203 100 Rev D ...
Page 212: ...Vscan Extend Maintenance 6 18 Vscan Extend User Manual 5721203 100 Rev D ...
Page 226: ...Appendix 7 14 Vscan Extend User Manual 5721203 100 Rev D ...
Page 248: ...Privacy and Security 8 22 Vscan Extend User Manual 5721203 100 Rev D ...
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