Chapter 32: Introduction to Echocardiographic Evaluation and Technique

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1

color flow mapping (CFM)

ability to display blood flow in multiple colors depending on the velocity, direction of flow, and extent of turbulence

2

continuous wave probe

probe with which sound is continuously emitted from one transducer and continuously received by a second transducer

3

diastole

part of the cardiac cycle in which the ventricles are filling with blood; the tricuspid and mitral valves are open during this time

4

Doppler frequency

red blood cells move from a lower-frequency sound source at rest toward a higher-frequency sound source; change in frequency is called the Doppler shift in frequency

5

pulsed wave transducer

single crystal that sends and receives sound intermittently; a pulse of sound is emitted from the transducer, which also receives the returning signal

6

spectral analysis waveform

graphic display of the flow velocity over time

7

systole

part of the cardiac cycle in which the ventricles are pumping blood through the outflow tract into the pulmonary artery or the aorta