
Operation Manual
5-12
2D Hip Joint
This is a basic measurement that is available in all diagnosis modes. You can measure the angle of two
straight lines to a straight line in a 2D image. This measurement is commonly used in the obstetrics appli-
cation.
1. Press the Softmenu button [4] 2D Hip Joint. “2D Hip Joint” is displayed on the left side of the screen.
2. Use the trackball and the Set button on the control panel to specify the rst straight line.
▶
Place the cursor at a desired position with the trackball, and press the Set button.
3. Repeat the above process to specify two other straight lines.
4. The angle between them will be calculated automatically.
▶
α: The angle between the rst and second straight lines.
▶
β: The angle between the rst and third straight lines.
5. When the measurement is nished, its result is shown on the screen. The angles α and β, and the Hip
Joint Type are displayed on the screen.
Please refer to the table below for Hip Joint Type information:
Type α β
1a 60 ≤ α
<
90
0
<
β
<
55
1b 60 ≤ α
<
90
55 ≤ β
<
90
2a/b 50 ≤ α
<
60
0
<
β
<
90
2c 43 ≤ α
<
50
77 ≤ β
<
90
d 43 ≤ α
<
50
0
<
β
<
77
3/4 0
<
α
<
43
[Table 5.2 Hip Joint Type Table]
M Distance
This is a basic measurement that is available in M Mode only. You can specify two points in an M image
and measure the distance, elapsed time and velocity between them.
1. Press the Softmenu button [1] Distance to select M Distance. “M Distance” is displayed on the left side
of the screen.
2. Specify two points and measure the straight distance between them. The method for measuring a
line is the same as in “2D Distance (Line).”
3. When the measurement is nished, its result is shown on the screen.
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