Basic Sonographic Terminology

Dms 1303
 
Created Sep 13, 2009
by ritzymama
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acoustics
the science of sound, including its production, propagation and effects
acoustic enhancement
an area of increased echo intensity distal to a fluid filled area
acoustic wave
a mechanical disturbance which propagates through a continuous medium
acoustic window
any medium or structure that transmits sound well
anechoic
no internal echoes
artifact
part of an ultrasound image that does not accurately represent the underlying anatomy
attenuation
progressive weakening of the sound beam as it travels through body tissue
color flow imaging
ability to display bood flow in multipe colors depending on the velocity, direction of flow...
complex
a structure that has both fluid filled and solid components
doppler
concern s the behavior of high frequency sound waves as they are reflected off moving fluid,...
duplex imaging
the simultaneous display of a gray scale image and the Doppler waveform
echo
a recorded acoustic signal
echogenic
a region containing a high amount of echoes
frequency
number of cycles per second
heterogeneous
does not have a uniform texture
homogeneous
used in the sense of having a uniform texture
hyperechoic
a region containing many echoes, used mainly to describe an area in relation to its surrounding...
hypoechoic
a region that contains only a few echoes, used maily to descrie a area in relation to its surrounding...
interface
surface forming the boundary between different structures
isoechoic
of the same echogenicity as a neighboring area, but not necessarily of the same texture
parenchyma
a general term for the tissue of an organ
real time imaging
type of imaging in which many frames are run together to create a cinematic view of the tissue
rocking
holding the transducer in one spot and angling along the curve or rounded protion of the scan...
rotating
twisting the transducer in a circular motion while holding it in one place
sector
shape of the image on the film, depends on the type of transducer that is used
shadowing
failure of the sound beam to pass through an object, causing the absense of echoes posterior
solid
defines a mass with no fluid areas
transducer
a device capable of convering energy from one form to another
ultrasound
sound waves which have a frequency above the audible range of the human ear


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