Chapter 1 Flashcards Preview

SON111AB-Physics > Chapter 1 > Flashcards

Flashcards in Chapter 1 Deck (13)
Loading flashcards...
1
Q

Color-Doppler display

A

the presentation of 2D, real time Doppler- shift information in color superimposed on a real-time, gray-scale, anatomic, cross-sectional image. Flow directions toward and away from the transducer.

2
Q

Doppler Effect

A

a change in frequency caused by reflector motion

3
Q

gray-scale image

A

range of brightnesses between white and black

4
Q

image

A

a reproduction, representation, or imitaiton of the physical form of a person or thing

5
Q

linear image

A

an anatomic image presented in a rectangular format

6
Q

pulse-echo technique

A

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

7
Q

scan line

A

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

8
Q

sector image

A

an anatomic image presented in a pie-slice shaped format

9
Q

sonography

A

medical 2D, cross-sectional, and 3D anatomic flow imaging using ultrasound

10
Q

spectral-Doppler display

A

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

11
Q

transducer

A

a device that converts energy from one form to another

12
Q

ultrasound

A

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

13
Q

volume imaging

A

3D imaging