SSI-6000/SSI-5800/SSI-5500/SSI-5500BW
Digital Color Doppler Ultrasound System
Tissue Type
Phase Velocity (m/s)
Air
330
Soft tissue (average)
1540
Bone, skull
2770 +/- 185
Brain Fresh
1460
Breast in vivo
1510 +/- 5
Breast Fat
1420
Breast Mass
1600
Fat, fresh
1450
Kidney 1560
Liver, fresh
1570
Blood
1570
Lung, fresh
658
Muscle
1580
Uterus
1630
Tendon
1750
Collagen
1675
Water (20
C)
1480
Thursday,
April
01,
2010
10:08
operators manual Page 1
Table 5.1:
Sound speeds in the different materials
5.3.7
Dynamic Range
DYN
Dynamic Range increases the adjustable range of contrast by enhancing the in-
tensities of parts of the grayscale. It is useful for optimizing the ultrasound image
texture.
• go to the B mode menu (
Section 5.3.1
), highlight
DYN
.
• use the
LEFT/RIGHT
keys to decrease/increase the value of Dynamic Range.
Remarks:
Dynamic Range is displayed at the 2D Image Info Area on the screen (The
D
in
D/G
).
5.3.8
Grayscale curve
GSC
Brightness of each pixel is determined by the amplitude of the corresponding echo.
Grayscale curve (
GSC
) adjusts the images by changing how the amplitude is con-
verted to brightness.
The GSC is adjustable in the real time mode as well as the freeze mode.
• highlight
GSC
in the context menu.
• use the
LEFT/RIGHT
keys to decrease/increase the value of Grayscale Curve.
Remarks:
Grayscale Curve is displayed at the 2D Image Info area on the screen (The
G
in
D/G
).
P/N: 4701-0061-01B
5-6
Содержание SSI-5500
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