Samsung MySono U5 Bedienungsanleitung PDF herunterladen (Seite 177)

100

101

Chapter 5 Measurements and Calculations

5-17

Trace

This is a basic measurement available in all diagnosis modes. You can measure the circumference and

area of an irregular object in a 2D image.

1. Press the Caliper button and select Trace in soft menu [2]. “Trace” is displayed in the user

information area.

2. Use the trackball and the Set button to specify the start point for tracing over the contour of the

measurement area.

X Use the trackball to place the cursor at the desired position and press the Set button.

3. Trace the curve so that the measurement cursor returns to the start point, and then press the Set

button.

NOTE: Trace lines must be closed. If you press the Set button before tracing is complete, tracing

may be done over a straight line between the current point and the start point, resulting in a

signiﬁcant error.

4. Once measurement is taken, the result is displayed on the screen.

The following formulae are used for Trace measurements:

, (N = 1, 2… last point)

%StA

StA stands for Stenosis Area, which is a basic measurement available in all diagnosis modes. In a 2D

image, the area of a vessel is measured and the stenosis ratio (%) calculated.

1. Press the Caliper button and select %StA in soft menu [2]. “%StA” is displayed in the user

information area.

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

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

4. %StA is calculated using the following formula:

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

1 2 ... 172 173 174 175 176 177 178 179 180 181 182 ... 423 424

Kommentare zu diesen Handbüchern

Keine Kommentare

Samsung MySono U5 Bedienungsanleitung Seite 177

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Messen, Testen & Steuern Samsung MySono U5