Ultrasound Crystal vibrate in BLANK mode - (correct answer) -Thickness j. j. j. j. j. j. j. j. j.
How many rows is a 2D image - (correct answer) -3-9 rows
j. j. j. j. j. j. j. j. j. j. j.
units of power - (correct answer) -Watts (W) cm squared
j. j. j. j. j. j. j. j. j.
units of pressure - (correct answer) -Pascal, mmhg, (mercury), Atm, dyne
j. j. j. j. j. j. j. j. j. j.
What unit is used to compare / measure amplitude - (correct answer) -Decibel
j. j. j. j. j. j. j. j. j. j. j. j.
If we increase density of a medium it's propagation. Speed will - (correct answer) -
j. j. j. j. j. j. j. j. j. j. j. j. j. j.
Decrease
If temp increases then speed - (correct answer) -Increases
j. j. j. j. j. j. j. j.
* Fact * bulk modulus means stiffness - (correct answer) -
j. j. j. j. j. j. j. j. j. j.
What tx has a motor? (Mechanical tx) - (correct answer) -PEDOF
j. j. j. j. j. j. j. j. j. j.
What is the device that converts one form of energy into another form of energy? - (correct
j. j. j. j. j. j. j. j. j. j. j. j. j. j. j. j.
answer) -Transducer
j. j.
What device transforms electricity into sound ? (Reverse pieazo) or sound (echos) to
j. j. j. j. j. j. j. j. j. j. j. j.
electricity (voltage-pieazo electricity) - (correct answer) -Ultra sound Transducer
j. j. j. j. j. j. j. j. j.
What are the positive qualities of man made pieazo composite? (Newly engineered
j. j. j. j. j. j. j. j. j. j. j.
crystals) - (correct answer) -Increased sensation, wide band with, feasible harmonic
j. j. j. j. j. j. j. j. j. j. j.
imagine, impedance of Crystal (better transmission of sound through tissue)
j. j. j. j. j. j. j. j. j. j.
A curvilinear tx is also called what ? - (correct answer) -Convex tx
j. j. j. j. j. j. j. j. j. j. j. j.
Sonographic frames are composed of how many scan lines ? - (correct answer) -96-256 j. j. j. j. j. j. j. j. j. j. j. j. j.
Volume imagining or surface rendering means ? - (correct answer) -Slices of 2D image but
j. j. j. j. j. j. j. j. j. j. j. j. j. j.
put together to create 3D images
j. j. j. j. j. j.
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