T or F: Acoustic linear attenuation coefficient is a function of frequency
True
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4
T or F: Ultrasounds use lower frequency to image deeper within tissue
\ (Think: attenuation increases with frequency)
True
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5
As you increase the B1 field, that’s the RF pusle that affects the ________ of movement, but B1 must still be at Larmor Frequency to create resonance
Angle
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6
The Larmor Frequency is dependent on the B__
0
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7
T or F: MRI’s are recorded in the transverse plane
True
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8
Helium is used in MRI to…
Cool the coil to lower resistence (preserve energy)
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9
The frequency range of the waves used in MRI are in the _____Hz range
M
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10
B1 is turned ____ before we record the signal -- it’s needed to excite, but turns off so it can relax and be measured.
Studied by 4 people
Note 
Flashcard (127)