-1-
Q1E-EP0428
1.
General
1.1.
General
The EUP-C514 is a convex array probe.
The acoustic output of the EUP-C514 was measured according to the
IEC60601-2-37 standard and the measurement was conducted by operating
with the Hitachi ultrasound diagnostic scanner.
The measured acoustic output is listed in the instruction manual of
the Hitachi ultrasound diagnostic scanner.
The EUP-C514 is categorized in class IIa according to Directive
93/42/EEC and classified as type BF according to IEC60601-1.
1.2.
Principles of operation
This probe and the ultrasound diagnostic scanner enable image diagnosis
using ultrasonic waves. This system operates under the principles
described below.
1)
When an electric pulse signal is applied from the transmitter to
the transducer of the probe, the transducer converts electric signals
into mechanical vibration energy for emitting pulse-shaped
ultrasonic waves into the body part, liquid or other medium
contacting the transducer.
2)
The emitted ultrasonic waves are reflected by boundaries with
different acoustic characteristics (acoustic impedance) within the
body.
3)
The transducer is also used to receive reflected ultrasonic waves.
The transducer vibrates mechanically due to the received ultrasonic
waves and converts mechanical vibrations into electric energy.
Electric signals are converted to shades of brightness by brightness
modulation to obtain an image.
