ES-100VX MiniDoppler
®
9
PRINCIPLES
The ES-100VX MiniDoppler
®
is designed to receive blood flow velocity information
through the use of ultrasound. A specific frequency is transmitted from the probe to the
patient.
The transceiver amplifies a high frequency oscillation output for transmission to the
transducer. The voltage is converted by piezoelectric crystal (transducer) to ultrasound.
The ultrasound beam is transmitted to blood cells flowing through arteries or to beating
fetal hearts. The ultrasound beam is reflected by the red blood cells or by moving
structures and received by the crystal in the transducer, which converts the ultrasound
into a voltage. A Doppler shift occurs between the emission and reception of the
ultrasound beam.
The voltage is amplified. The electronics amplify the signal, filters out noise and
improves the S/N ratio. The Doppler shift signals are amplified further and converted to
audible sound via the integrated speaker.
Summary of Contents for Koven MiniDoppler ES-100VX
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