SonoSite iLook, User Manual, Page: 93 / 102

Chapter 9: Glossary
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Glossar
y
shift An on-screen key used to enter capital letters and alternative on-screen
keyboard characters.
skinline A depth on the image display that corresponds to the
tissue/transducer interface.
stand A mobile device used to hold the system and transducer. It provides a
platform and AC power, video out, serial port connectors, and an
optional printer bracket.
system set-up A menu item used to access: Brightness, Contrast, Audio, Auto Shut Off,
Language, Video Format, Date/Time, and System Info.
thermal index (TI) The ratio of total acoustic power to the acoustic power required to raise
tissue temperature by 1°C under defined assumptions. See
Chapter 5
for a more complete description of TI.
Tissue Harmonic
Imaging (C15 only) Transmits at one frequency and receives at a higher harmonic
frequency to reduce noise and clutter and improve resolution.
touch screen The display works as a interactive tool to input information in the
system when the image is frozen or when entering patient information.
transducer A device that transforms one form of energy into another form of
energy. Ultrasound transducers contain piezoelectric elements, which
when excited electrically, emit acoustic energy. When the acoustic
energy is transmitted into the body, it travels until it encounters an
interface, or change in tissue properties. At the interface, an echo is
formed that returns to the transducer, where this acoustic energy is
transformed into electrical energy, processed, and displayed as
anatomical information.
video format A menu item used to select NTSC or PAL. See also NTSC and PAL.