Kremkau Chapter 1 Key Terms

Question 1

Color Doppler Display

Answer 1

the presentation of 2D, real time Doppler shift information in color superimposed on a real time, grey scale, anatomic, cross sectional image. Flow directions toward and away from the transducer are presented as different colors on the display.

Question 2

Doppler effect

Answer 2

A change in frequency caused by reflector motion.

Question 3

Gray-scale Image

Answer 3

Range of brightness (grey levels) between white and black seen on an image

Question 4

Image

Answer 4

A reproduction, representation, or imitation of the physical form of a person or thing.

Question 5

Linear Image

Answer 5

An anatomic image presented in a rectangular format.

Question 6

Pulse-echo technique

Answer 6

Ultrasound imaging in which pulses are reflected and used to produce a display.

Question 7

Scan Line

Answer 7

A line produced on a display that represents ultrasonic echoes returning from the body. A sonographic image is composed of many such lines.

Question 8

Sector Image

Answer 8

An anatomic image presented in a pie slice-shaped format.

Question 9

Sonography

Answer 9

Medical, two-dimensional, cross-sectional, and 3D anatomic and flow imaging using ultrasound.

Question 10

Spectral Doppler Display

Answer 10

the presentation of Doppler information in a quantitative form of Doppler shift versus time. Visual display of a Doppler spectrum.

Question 11

Transducer

Answer 11

a device that converts energy from one form to another.

Question 12

Ultrasound

Answer 12

Sound having a frequency greater that what humans can hear, that is, greater than 20 kHz.

Question 13

Volume Imaging

Answer 13

3D imaging.