Ch. 11 (Display Modes) Flashcards
3 basic modes of display in ultrasound
amplitude mode
brightness mode
motion mode
what is A-mode?
amplitude mode
the x axis on A-mode represents
depth
the y axis on A-mode represents
amplitude
what is B mode
brightness mode
x axis of B mode represents
depth
z axis of b mode represents
amplitude
M-mode stands for
motion mode
x axis on M mode
time
y axis on m mode
depth
display mode that provides information regarding reflector motion with respect to time?
m mode
which mode provides the foundation for real-time gray scale anatomic imaging?
b mode
A mode is accurate in determining what
depth of reflectors
the brightness of b mode indicates
the strength of the reflection
white dots are ___ reflectors
black dots are ___ reflectors
white - strong
black - weak
this mode was the first form of gray scale imaging, and is the basis for all other types of gray scale imaging, including real-time imaging
b mode
m mode appears as a group of vertical/horizontal lines
horizontal
Reflections in m mode move at a constant speed from left to right. What creates squiggly lines?
changing depth of the reflecting surfaces
this mode of ultrasound arises from a single penetration line into the body
m mode
the sampling rate of m mode is very high and is equal to the ___
PRF of the system
motion mode has been used primarily to assess what
motion of cardiac walls and structures
only mode that provides information about a reflector’s changing location with respect to time
m mode
A mode is accurate in determining the ___ of reflectors
depth
a B-mode image is made up of many lines placed…
next to each other
labor intensive exam created by a transducer connected to a mechanical arm moved in increments
scan lines created a large image
static B-scan
M-mode has a very high ___ resolution
temporal
