Properties of Ultrasound Transducers Flashcards
What is a beam former?
Time delay assigned to each transmit pulse for each element
What is the amplifier?
Amplifies low signals for processing
What is TGC?
Signal gain is increased as time passes the emitted wave pulse
What is the filter in signal processing?
If gain is too high, snow can be created. Filtering removes noise at frequencies outside the range
What is write zoom?
Zoom prior to saving - better quality and increased frame rate
What is read zoom?
Magnifying image after saving - pixelated
What is dynamic range compression?
lets you tell the ultrasound how you want the echo intensity displayed as different shades of gray. A wide/broad range displays more shades of gray and a smoother image overall.
What is the scan convertor?
Stores image in suitable format
What is pre-processing?
Changes made to echo info before it is stored - not reversible
What is post-processing?
Limited functions after saving, read zoom, colour mapping
