Operator controls

Monitor

displays the ultrasound image with 2D, color and spectral doppler

duplex

2D and color

Triflux

2D, color, spectral

Near Field

closest to the transducer

Far field

deeper to the tissue

Power

controls the amount of acoustical energy sent into the human body, controls brightness, decibels

ALARA

as low as reasonably achievable

data field on the monitor

top right, displays image processing information

control panel

has transducer button

phrased array

used for cardiac

linear array

used for superficial structures

Curved array

powerful, penetrates

transducers

thick crystal: low frequency transducer, more penetration

Thin crystal: high frequency transducer, less penetration

depth

properly display body part being imaged

harmonic imaging

uses frequencies created by the tissues, rather than the fundamental frequency, to create an image

harmonic imaging helps

brings out details in second harmonic

overall gain

adjusts brightness of entire image

TGC