Mindray TE5, Руководство оператора

Страница: 76 / 323

5-14 Image Optimization
Effects This function is used to adjust the scan angle of linear probes, so as to change
the angle between the transmitting beam and flow direction.
Impacts Steer is only valid for linear probes.
Line Density
Description Line density determines the quality and information of the image.
Operations Adjust through [Line Density] on the menu.
There are four levels of line density available: UH, M, H, L.
Effects The higher the line density, the higher the resolution.
Impacts The higher the line density, the lower the frame rate.
Packet Size
Description This function is an indication of the ability to detect flow, which is used to adjust
the accuracy of color flow.
Operations Select different effects through [Packet Size].
There are 3 levels of packet size available: 0 represents no packet size control
and the bigger the value the higher the sensitivity.
Effects The higher the packet size, the more sensitive the indication for low-velocity flow.
Impacts Adjusting the packet size may lead to the frame rate changing.
Flow State
Description This function is used for fast image optimization.
Operations Select different effects through [Flow State].
3 levels are provided: L, M, H.
Persistence
Description This function adjusts the temporal smoothing in Color mode to optimize the
image.
Operations Select different effects through [Persistence].
The system provides 6 levels of persistence adjustment: 0 represents no
persistence, and the bigger the value the stronger the effect.
Smooth
Description This feature is used to reject noise and smooth the image.
Operations Adjust through [Smooth] on the menu.
The system provides 6 levels of smooth function: the bigger the value the
stronger the effect.