The dynamic range in signal processing is the range between the minimum low intensity and maximum high intensity signals that a system is capable of displaying.

See also QB-Mode.

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.;
'Phased array probes made available for High resolution imaging of full cardiovascular examinations.
By adding Linear and Convex probes, the examination areas are extended to Abdominal and OB/GYN applications.
B-mode (1, 2 displays), M, and B/M-modes can be individually shown.
Optional Doppler unit available for observation of Blood flow information in pulsed and continuous wave Doppler.
Portable with IP (Image Processing), Full Keyboard, and track ball are standard.'

(FFT) The fast Fourier transformation is a particularly fast and efficient computational method of performing a Fourier transformation, which is the mathematical process by which raw data is processed into a usable image.
The fast Fourier transform analyzer is a common device that performs spectral analysis in ultrasound instruments. In this case, it displays different quadrature Doppler frequencies or reflector velocities when a sample volume cursor is used along time. The Doppler frequency is proportional to the spectral reflector velocity.

See also Proportionality Constant, and Sampling Rate.