Samsung SONOACE R3 Uživatelský manuál stáhnout pdf (Strana 138)

100

101

User Manual

5-14

1. Press the Sofmenu button [1] Distance to select Doppler Velocity (A/B). “Doppler Velocity (A/B)” is dis-

played on the left side of the screen.

2. Specify two points to measure velocity for.

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Place the cursor at a desired position with the trackball, and press the Set button.

3. When the measurement is nished, its result is shown on the screen.

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V_A: Velocity at Point A

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V_B: Velocity at Point B

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RI: Resistivity Index

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A/B: The Ratio of Velocity

Doppler Trace

This is a basic measurement that is available in Spectral Doppler Mode only. You can specify a point in a

Spectral Doppler image and trace a curve from that point to calculate the velocity, integral value and aver-

age velocity of blood ow.

1. Press the Sofmenu button [1] Distance to select Doppler Trace. “Doppler Trace” is displayed on the

left side of the screen.

2. Trace a curve. The method for measuring a curve is the same as in “2D Distance (Trace).”

3. When the measurement is nished, its result is shown on the screen.

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dT: Change in Time

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VTI: Velocity Time Integral

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Mean V: Mean Velocity

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Peak V: Peak Velocity

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Mean G: Mean Gradient

The equations used for D Trace measurement are as follows:

1 2 ... 133 134 135 136 137 138 139 140 141 142 143 ... 441 442

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