3: Configuration
EVO User Manual
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©2018 E.I. Medical Imaging
outer edges are not perpendicular to the transducer face but instead open up to allow
more image area at bottom of the field of view.
Note: only available for straight, linear (non-curved) transducers.
THI
Tissue harmonic imaging adjusts the transmit and receive filters in the ultrasound. This
filters out reverberation echoes allowing for a cleaner image with better contrast and less
artifact. THI doubles the image acquisition time, reducing the frame rate.
Compounding
For flat linear probes this introduces levels of angle compounding, steering the probe
beams for multiple vantage points (multibeam) as well as frequency compounding, using
multiple transmit and receive frequencies for a single image. A higher compounding setting
will provide a finer image with reduced speckle artifact. Each higher level will increase the
image acquisition time, reducing the frame rate.
For curved linear probes this introduces only frequency compounding
Synthetic
Adjusts beam sharpening to provide a sharper image with better resolution.
Line Density
Adjusts the number of vertical scan lines that make up the image. A higher setting provides
a finer image but increases the image acquisition time, reducing the frame rate.
