S2/S2BW
Digital Color Doppler Ultrasound System
The Tissue Harmonic Imaging (THI) refers to the process that system displays image by receiving its higher
harmonic echoes.
THI can acquire the nonlinear feature information of tissue, reduce artifacts and enhance the outline of tissues,
which is helpful for specific organs and tissue, like heart.THI makes use of the harmonic frequency produced
by the tissue. The original emission frequency can produce the harmonic frequency echo. Frequency doubling
of base emission frequency is the harmonic frequency received by tissue. The harmonic frequency received by
ultrasound systems has no original frequency or artifact,to reduce noise and increase the contrast resolution
and enhance the edge of image. THI is helpful for the difficult patients.
When in the working B-mode/Color-mode/Doppler real-time mode,press
THI
to enter Tissue
Harmonic imaging mode, and press the key again to quit the mode.
When entering THI mode, the THI mark displays on the upper-right of screen to demonstrate the working
condition. The parameter adjustment of B-mode imaging works in the THI mode as well.
When in THI mode, press
THI
to quit the imaging mode, and the mark disappears.
Note
•
Tissue harmonic image, compared to B-mode image, has a higher signal-to-noise
ratio, but with a lower image gain and testing depth. User can select suitable
imaging mode according to different need.
•
THI is mainly used in imaging of phase array. Not all the transducer can be applica-
ble.
P/N: 4710.00149A01
6-11
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