bkSpecto Advanced User Guide
(16-01642-01)
125
PW Doppler
Pulsed wave Doppler. PW Doppler is the primary Doppler mode. In
PW Doppler, short bursts (pulses) of ultrasound waves are
transmitted at regular intervals and analyzed as they return. The
received signals are detected and sent to amplifiers for audio
output as well as displayed on the monitor for a visual
presentation of the frequency components (spectrum).
Range (of velocities)
You can vary the PRF (pulse repetition frequency) to select the
range of Doppler velocities (frequencies) that are color-coded and
displayed. Restricting the range allows you to see velocity
differences (within the range) in more detail.
Shots per estimate
One way to improve the accuracy of the color-coded velocity
information is to increase the number of pulses transmitted in
each waveform packet (shots per estimate) at the expense of
decreasing the frame rate.
screen key
A control on the monitor that looks like a key or button.
spectral Doppler
See Doppler mode.
SS
Start systole.
steering
You can steer the Doppler beam of a linear transducer to vary the
beam angle. This can be useful for examining flow in blood vessels
parallel to the transducer surface.
ON/standby button
The switch on the back of the system used for turning the system
on and off each day.
TAM
Time Average Mean.
TAMX
Time Average Max.
T-area
Transverse Area.
TEH
True echo harmonics. BK Medical’s trademarked term for its pulse
inversion tissue harmonic imaging system.
TGC
Time gain control. The TGC curve determines variable
amplification applied to echoes from different depths in the tissue.
The TGC function compensates for attenuation and scattering of
the ultrasound beam in the tissue.
TI
Thermal index. The estimated rise in tissue temperature (in
°
C)
caused by the power emitted by the transducer.
TIB
Thermal index in bone at focal point.
TIC
Thermal index, cranial – bone at surface.
TIS
Thermal index in soft tissue.
triplex
Simultaneous imaging in 3 modes. See combination mode.
voxel
A three-dimensional pixel. A
vo
lume pi
xel
.
Term
Explanation
Summary of Contents for bkSpecto
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Page 10: ...10 Chapter 1 August 2018 bkSpecto Advanced User Guide 16 01642 01 ...
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Page 104: ...104Chapter 9 August 2018 bkSpecto Advanced User Guide 16 01642 01 ...
Page 120: ...120Chapter 11 August 2018 bkSpecto Advanced User Guide 16 01642 01 ...
Page 130: ...130Appendix B August 2018 bkSpecto Advanced User Guide 16 01642 01 ...
Page 156: ...156Appendix C August 2018 bkSpecto Advanced User Guide 16 01642 01 ...
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