Basic sonographic terminology

29 cards

dms 1303


 
  
Created Sep 13, 2009
by
ritzymama

 

 
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1
acoustics
 
the science of sound, including its production, propagation and effects
2
acoustic enhancement
 
an area of increased echo intensity distal to a fluid filled area
3
acoustic wave
 
a mechanical disturbance which propagates through a continuous medium
4
acoustic window
 
any medium or structure that transmits sound well
5
anechoic
 
no internal echoes
6
artifact
 
part of an ultrasound image that does not accurately represent the underlying anatomy
7
attenuation
 
progressive weakening of the sound beam as it travels through body tissue
8
color flow imaging
 
ability to display bood flow in multipe colors depending on the velocity, direction of flow...
9
complex
 
a structure that has both fluid filled and solid components
10
doppler
 
concern s the behavior of high frequency sound waves as they are reflected off moving fluid,...
11
duplex imaging
 
the simultaneous display of a gray scale image and the Doppler waveform
12
echo
 
a recorded acoustic signal
13
echogenic
 
a region containing a high amount of echoes
14
frequency
 
number of cycles per second
15
heterogeneous
 
does not have a uniform texture
16
homogeneous
 
used in the sense of having a uniform texture
17
hyperechoic
 
a region containing many echoes, used mainly to describe an area in relation to its surrounding...
18
hypoechoic
 
a region that contains only a few echoes, used maily to descrie a area in relation to its surrounding...
19
interface
 
surface forming the boundary between different structures
20
isoechoic
 
of the same echogenicity as a neighboring area, but not necessarily of the same texture
21
parenchyma
 
a general term for the tissue of an organ
22
real time imaging
 
type of imaging in which many frames are run together to create a cinematic view of the tissue
23
rocking
 
holding the transducer in one spot and angling along the curve or rounded protion of the scan...
24
rotating
 
twisting the transducer in a circular motion while holding it in one place
25
sector
 
shape of the image on the film, depends on the type of transducer that is used
26
shadowing
 
failure of the sound beam to pass through an object, causing the absense of echoes posterior
27
solid
 
defines a mass with no fluid areas
28
transducer
 
a device capable of convering energy from one form to another
29
ultrasound
 
sound waves which have a frequency above the audible range of the human ear

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