GE HEALTHCARE - KRETZTECHNIK VOLUSON® 730EXPERT (BT03)
D
IRECTION 105899, REVISION 3 DRAFT (APRIL 29, 2008) SERVICE MANUAL
4-8 Section 4-4 - Functional Checks
4-4-1 2D Mode Checks
Figure 4-6 2D Main and 2D Sub Menu
Table 4-3 2D Mode Functions
Step Task Expected Results
1
2D Mode Gain
Rotate the 2D MODE key to adjust the sensitivity (brightness) of the entire
image.
2
Transmit Power
Optimizes image quality and allows user to reduce beam intensity.
3
Focus Depth
To select the depth position of the actual focus zone(s). Arrows at the left
edge of the 2D-Image mark the active focal zone(s) by their depth position.
4
Depth
Adjusts the depth range of the ultrasound image for the region of interest.
The number of image lines and the frame rate are automatically optimized.
5
Screen Format (Dual, Quad)
Press this keys to change the display Mode from Single to DUAL or QUAD
display mode.
Press the SINGLE
format key or the 2D MODE key to change from Dual or
Quad to Single display.
6
FFC (Focus and Frequency Composite)
FFC combines a low frequency to increase the penetration and higher
frequency to keep a high resolution.
It reduces speckle and artifacts in the 2D image.
7
CRI
(Compound Resolution Imaging)
Pulses are transmitted not only perpendicularly to the acoustic window, but
also in oblique directions. The advantages of CRI are enhanced contrast
resolution with better tissue differentiation and clear organ borders.
8
CE
(Coded Excitation)
Coded Excitation improves image resolution and penetration in the far field.
This allows to use a higher frequency on technically difficult patients.
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