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ENCODING AND IMAGE FORMATION
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the z gradient alters the ______ axis of magnet
the y gradient alters ______ axis of magnet
the x gradient alters ______ axis of magnet
z = longitudinal
y = vertical
x = horizontal
what is the point of all three gradients and the bore of the magnet
isocentre
the isocenter is of what value
same value is b0 external field strength aka tesla strength
what is slice selection
locating a slice within the scan plane selected
what is frequency encoding
spatially locating a signal along the long axis of the anatomy
what is phase encoding
locating signal along the short axis of the antomy
z gradient ______ slices
x gradient _______ slices
y gradient _______ slices
z axial slices
x = sagittal slices
y = coronal slices
what is k space
when data is collected the information is stored as data points in the array processor of the computer
what are the two longitudinal and transverse axis of k space
longitudinal is =phase axis
transverse = frequency axis
what is the unit for k space
radians per cm
the lines in the top half of k space are ______
the bottoms are ___
positive
negative
what is NEX
number of excitaitons or number of signal averages that each line is filled with data
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Author
MriSensei
ID
338426
Card Set
ENCODING AND IMAGE FORMATION
Description
MRI
Updated
2018-02-26T20:07:05Z
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