Introduction
2 Vivid S5/Vivid S6 User Manual
R2424458-100 Rev. 2
Principles of Operation
Medical ultrasound images are created by computer and digital
memory from the transmission and reception of mechanical
high-frequency waves applied through a transducer. The
mechanical ultrasound waves spread through the body,
producing an echo where density changes occur. For example,
in the case of human tissue, an echo is created where a signal
passes from an adipose tissue (fat) region to a muscular tissue
region. The echoes return to the transducer where they are
converted back into electrical signals.
These echo signals are highly amplified and processed by
several analog and digital circuits having filters with many
frequency and time response options, transforming the
high-frequency electrical signals into a series of digital image
signals which are stored in memory. Once in memory, the
image can be displayed in real-time on the image monitor. All
signal transmission, reception and processing characteristics
are controlled by the main computer. By selection from the
system control panel, the user can alter the characteristics and
features of the system, allowing a wide range of uses, from
obstetrics to peripheral vascular examinations.
Transducers are accurate, solid-state devices, providing
multiple image formats. The digital design and use of
solid-state components provides highly stable and consistent
imaging performance with minimal required maintenance. A
sophisticated system design with computer controlled
extensive features and functions make the Vivid S5 and
Vivid S6 easy systems to use and very user friendly.
Interference caution
Devices not to be used near this equipment:
Devices which intrinsically transmit radio waves such as
cellular phones, radio transceivers, mobile radio transmitters,
radio-controlled toys, and so on, should not be operated near
the unit.
CAUTION
Use of devices that transmit radio waves near the unit could
cause it to malfunction.
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