Samsung H60 Uživatelský manuál stáhnout pdf (Strana 138)

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Operation Manual

 % Stenosis (A)

StA stands for Stenosis Area, which is a basic measurement available in all diagnosis modes. The area

of a blood vessel is measured on a 2D image to calculate its stenosis ratio (%).

1. Select % Stenosis (A) on the monitor or touch screen. Measure the area of the vessel outer wall

using the Area measurement method.

2. When the second cursor appears, measure the area of the vessel’s inner wall under stenosis.

3. Calculate % Stenosis (A) with the following equation:

%Stenosis (A) = (Outer Area – Inner Area) / Outer Area x 100

 VolumeFlow (A)

This is a basic measurement that is only available in Spectral Doppler mode and 2D Image mode.

Specify two bars on a Spectral Doppler image, and specify an ellipse in 2D Image mode to calculate

the VoumeFlow.

1. Select VolumeFlow (A) on the monitor or touch screen. Use the trackball and the Set button on the

control panel to select two bars. Measurement is taken in the same way as ‘M Time’. This can only be

done in the Loop area.

2. Use the trackball and the Set button on the control panel to select an ellipse. 2D Image mode will

activate automatically so that you may measure the ellipse. Measurement is taken in the same way

as ‘Ellipse’.

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

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Samsung H60 Uživatelský manuál Strana 138