From Fukuda Denshi Co., Ltd.;
'Multi-Purpose Portable Scanner
Multi-Frequency Function enables selection of 3 frequencies in each Transducer
High-End image Control Function as Zoom, Image Processing, and Variable Focal Zones
Built-in Large Track Ball allows ease of use B, B/B, M, and B/M-mode display
General Calculation Package for OB, Distance, Area, Volume, and Cardiovascular
OB Calculation shown on report page
Wide Band, High sensitivity New optional probes'

From Fukuda Denshi Co., Ltd.;
'Operation-friendly Switches and Controls backlit to permit the operator to identify them in a darkroom
Image Optimization through Ultrasonic Frequency Changeover without replacement of the probe
High frame rate enhancement mode for Cardiac echo
Cine memory for selection of best data through SCROLL, LOOP, or MANUAL review
Programmable function keys allow to get predefined for measurement parameters.
Special measurement software usable in a wide range.
Measurement Report page on the display can be printed as required.'

From Fukuda Denshi Co., Ltd.;
'Fully software controlled Image Processing (F-XT technology)
Color Doppler & Power Doppler display available
Autofocus function for transmission
High-resolution SVGA display
Cine memory with 128 frames
Wide band Probe for multi frequency function
6-step STC adjustment
DICOM-compatible Ethernet port
3.5-inch 640MB drive for image filing'

(F) The number of cycles of a periodic process per unit time. Frequency and wavelength are inversely related. The higher the frequency the smaller the wavelength. The frequency of ultrasound is expressed in units of hertz (Hz), where 1 Hz = 1 cycle per second.
The effect of different frequencies on tissue penetration:
The higher the frequency the less the penetration, the lower the frequency the greater the penetration. As frequency increases, resolution improves but the imaging depth or penetration decreases. The lower the axial resolution, the more detail can be seen.
Usual frequencies for pediatric ultrasound: 5.0mHz to 7.5mHz and 10mHz.
Usual frequencies for adult ultrasound: 2.0mHz to 3.0mHz.

See also Doppler Interrogation Frequency, Multi-frequency Probe, and Huygens Principle.

The gain is a linear factor that is used in a device as a multiplier after calibration. The gain is the ratio of input to output in an amplifier. The sensitivity of a probe is adjusted by changing the gain.

See also Compress, and Reject.