5-44 Image Optimization
5.13 TDI
TDI mode is intended to provide information of low-velocity tissue motion, specifically for cardiac
movement.
There are 4 types of TDI mode:
Tissue Velocity Imaging (TVI): This imaging mode is used to detect tissue movement with
direction and speed information.
Tissue Energy Imaging (TEI): This imaging mode reflects the status of cardiac movement
by displaying the intensity of tissue, the brighter the color the less the intensity.
Tissue Velocity Doppler Imaging (TVD): This imaging mode provides direction and speed
information of the tissue quantificationally with doppler spectrum.
Tissue Velocity M Imaging (TVM): This function assists to observe the cardiac motion
through a direct angle. TVM mode is also called Color Tissue M mode, refer to "5.14 Color
M Mode" for details.
Only phased probe is valid for TDI function.
5.13.1 TDI Exam Protocol
In real-time mode, tap [TDI] on the right side of the operating panel to enter the corresponding
TDI mode as follows:
In B or B+Color mode, tap to enter TVI mode.
In Power mode, tap to enter TEI mode.
In PW mode, tap to enter TVD sampling line adjustment status.
In M mode, tap to enter TVM sampling line adjustment status.
Switching between the TDI modes
In TDI mode, tap [Color], [Power], [M] or [PW] to switch between the modes.
Exit TDI
Tap [TDI] to exit TDI mode and enter general imaging modes.
Or, tap [B] to return to B mode directly.
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