Mindray TE5, Руководство оператора

Страница: 70 / 323

5-8 Image Optimization
Line Density
Description The function 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.
Dynamic Range
Description This function is used to adjust the B image resolution to compress or expand the
gray display range. The real-time value displays in the image parameter area in
the top-left corner of the screen.
Operations Adjust through [Dyn Ra.] on the menu.
Tap [-] or [+] to change the value slightly or drag the control directly.
The adjusting range is 30-240, in increments of 5.
Impacts The more the dynamic range, the more specific the information and the lower
the contrast with more noise.
iClear
Description The function is used to enhance the image profile so as to distinguish the image
boundary for optimization.
Operations Adjust through [iClear] on the menu.
Tap [-] or [+] to change the level slightly or drag the control directly.
The system provides 7 levels of iClear adjustment: off represents no iClear
effect, and the bigger the value the stronger the effect.
Impacts It may cause increased noise.
Persistence
Description This function is used to superimpose and average adjacent B images, so as to
optimize the image and remove noise.
Operations Adjust through [Persistence] on the menu.
Tap [-] or [+] to change the level slightly or drag the control directly.
The system provides 7 levels of frame average adjustment: the bigger the value
the stronger the effect.
Effects Persistence can remove image noise to make details clearer.
Impacts Increasing Persistence may lead to missing signals.
TSI (Tissue Specific Imaging)
Description The TSI function is used to optimize the image by selecting acoustic speed
according to tissue characteristics.
Operations Select different TSI modes using the [TSI] control.
The system provides four ways of optimizing for specific tissues: general,
muscle, fluid and fat.