Q9 Digital Color Doppler Ultrasound System
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Chapter 5 General Measurements
Introduction
Measurements and calculations derived from ultrasound images are intended to supplement other clinical
procedures available to the physician. The accuracy of measurements is not only determined by system accuracy,
but also by the use of proper medical protocols by the operator. When appropriate, make sure to note any
protocol associated with a particular measurement or calculation.
CAUTION:
Please select the most appropriate ultrasound images, measurement tools and measurement
methods for measurements according to your diagnosis needs. The final measurement results must be determined
and verified by a physician. Measurement accuracies are affected by many non-technical factors, for example
operator’s experience, patient’s status. Please do not only use the ultrasound measurement results as the sole basis
for diagnosis, please always use other clinical information to do integrated diagnostics.
Overview
This section provides information about taking measurements and describing calculations available in each mode.
It includes the following topics:
List of generic measurements
Mode Measurements: Step-by-step instructions for taking specific measurements, organized by mode
Measurement results display and erasing
5.1
Key for Measurement
Trackball
Trackball is used to move the cursor, main functions are as follows:
Before starting a measurement, use the trackball to choose the menu options;
After starting a measurement, move the trackball to move the cursor, during the measurement, the cursor
should not be moved out image area;
During the Ellipse method measurement, use trackball to change the length of short axis.
【
ENTER
】
During the measurement, the functions of
【
ENTER
】
key are as follows:
When cursor is on the menu, press the key to choose the options and start the measurement.
During the measurement, press the key to anchor the start point and end point.
【
DEL
】
Main functions are as follows:
In frozen status, press the DEL-key, delete all the measurement results, comments and traces.