GE LOGIQ V2 User Manual page 98

Performing an Exam
Table 2-2:
Control
Transparency Map
Spatial Filter
Flash Suppression
Packet Size
Sample Volume
CF/PDI Auto Sample
Volume
CF/PDI Focus Depth
CF/PDI Frequency
CF/PDI Auto
Frequency
CF/PDI Center
Depth
PDI
TVI (Option)
TVD (Option)
Q Analysis (Option)
2-6
Color Flow Mode Controls (Continued)
Bioeffect
No Brings out the tissue behind the color map.
No Smooths out the color, makes it look less pixely.
No Activates/deactivates Flash Suppression, a motion artifact
elimination process.
Yes Controls the number of samples gathered for a single color flow
vector.
Yes Adjusts the size of the color flow doppler transmit wave (or pulse)
and size (or length). Lower setting gives better flow resolution and
a higher setting increases sensitivity.
Yes Set the default value at Utility -> Imaging -> CF Mode.
Yes
Yes
Yes
Yes
Yes Power Doppler Imaging (PDI) is a color flow mapping technique
used to map the strength of the Doppler signal coming from the
tissue rather than the frequency shift of the signal. Using this
technique, the ultrasound system plots color flow based on the
number of reflectors that are moving, regardless of their velocity.
PDI does not map velocity, therefore it is not subject to aliasing.
Yes Tissue Velocity Imaging (TVI) calculates and color-codes the
velocities in tissue. The tissue velocity information is acquired by
sampling of tissue Doppler velocity values at discrete points.The
information is stored in a combined format with gray scale imaging
during one or several cardiac cycles with high temporal resolution.
Yes TVD: Tissue Velocity Doppler: based on TVI mode, activate a
sample volume of the PW ventricular wall to get the spectral
information of the sample section.
No Q Analysis is available for the image loop acquired in the following
modes: TVI, CF and PDI. All of the Q Analysis modes operate
similarly, with some variation.
Description/Benefit
LOGIQ V2/LOGIQ V1
Direction 5610736-100 Rev. 9
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User Guide