Samsung MySono U5 Manual de usuario descargar pdf (Pagina 187)

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Chapter 5 Measurements and Calculations

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Stenosis Measurement

You can measure the stenosis of each blood vessel system by measuring and calculating an area or

distance.

■

%StA

Measure the area of the inner and outer walls of a blood vessel. StA stands for Stenosis Area.

1. Select the %StA menu, and the rst cursor appears in 2D Mode.

2. Measure the area of the vessel outer wall using the Circ/Area measurement method.

3. When the second cursor appears, measure the inner wall area of the vessel under stenosis.

%StA = (Outer Area – Inner Area) / Outer Area × 100

■

%StD

Measure the diameter of a blood vessel. StD stands for Stenosis Distance.

1. Select the %StD menu, and the rst cursor appears in 2D Mode.

2. Measure the total diameter of a vessel using the Distance measurement method.

3. When a new cursor appears, measure the inner wall diameter of the vessel under stenosis.

%StD = (Outer Distance – Inner Distance) / Outer Distance × 100

Heart Rate Measurement

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HR (Heart Rate)

You can calculate heart rate for a certain period of time.

1. Select HR in the measurement menu. A bar appears allowing you to specify a measurement

area.

2. Specify the measurement area.

X Place the bar at a desired position with the trackball, and press the Set button.

3. The system automatically measures the heart rate within the specied range. The measurement

results are displayed on the screen.

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Samsung MySono U5 Manual de usuario Pagina 187

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