Sonography, Chapter 2, Ultrasound Instrumentation: "Kobology"

Freeze Key

"Freeze" image and suspend real time. Press button again to unfreeze image and resume real time

Primary Imaging Controls

Controls such as imaging preset, frequency, depth, and time-gain compensation (TGC) that directly affect image quality.

Dual Image and/or Left/Right Key

Display two images side by side for comparison. (Image measurements can be compared)

HIS

Hospital Information System, stores patient demographic information and medical records

trackball

Mouse

Query Worklist

Patient information is electronically transferred to the u/s system via the WORKLIST

PACs

Picture Archiving and Communication System. These are computers or networks dedicated to the storage, retrieval, distribution and presentation of diagnostic medical images.

Focal Zone Position and Focal Number

Position the focal zone to the desired scan depth (Adds or removes additional focal zones)

RIS

Radiology Information System, supports imaging, reporting and relevant patient data

TGC Curve Sliders

TGC curve is located vertically on the right side of the u/s image on the screen.

Print/Store Key

activate programmed storage device to store frozen image

Depth

adjusts image size

Time Gain Compensation (TGC)

equalize differences in received echo amplitudes due to reflector depth. returning echoes from deep in the body are amplified so information on deeper structures can be received.

Alphanumeric Keys

letters, numbers, and symbols

Teleradiology

method by which radiologists consult for imaging diagnoses using PACs to view images transmitted from site of origin.

Image Direction

reverse the scan direction of the displayed image

Frequency

select an imaging frequency based on patient anatomy and examination type. High frequencies for superficial structures. Low frequencies fir deeper structures.

Imaging Preset/Model

select appropriate imaging preset or model as a starting point for pre-programmed imaging parameters

Probe Preset/Model

select different transducers/probes

cine loop

store recently scanned image frames into system memory before freeze key is depressed