BASICS AND METRIC SYSTEM
WHAT IS THE VERTICAL AXIS OF A GRAPH CALLED?
Z AXIS
X AXIS
Y AXIS
TIME-AXIS
Y AXIS
WHAT ARE ALL THE ACOUSTIC PROPAGATION PROPERTIES AND ACOUTIC VARIABLE?
ACOUSTIC PROPAGATION: F, P, I, P, A, W, S
ACOUTIC VARIABLE: P, D, D
WHAT DETERMINES THE PERIOD OF A WAVE
THE SOURCE
THE MAX VALUE OF THE DENISTY OF AN ACOUSTIC WAVE IS 120LB/IN^2 WHILE THE MIN DENSITY IS 40LB/IN^2. WHAT IS THE AMPLITUDE OS THE WAVE
40LB/IN^2
120-40
80/2
40
IF SOUND TRAVELS AT EXACTLY 1540 M/SEC IN A PARTICULAR MEDIUM, THEN THE MEDIUM ___.
MAY BE SOFT TISSUE
A BOUQUET HAS 30 FLOWERS. THE SIZE OF THE BOUQUET IS DECREASED BY A FACTOR OF 3. HOW MANY FLOWERS REMAIN?
27
0
10
15
10
SOUND IS BEST DESCRIBED AS
A TRANSVERSE WAVE
A SERIES OF RAREFACTIONS AND COMPRESSIONS
A WAVE HUMANS CAN HEAR
DISPLACEMENT OF ENERGY
COMPRESSION AND RAREFRATIONS
WHAT ARE THE UNITS FOR THE PERIOD OF A ACOUSTIC WAVE
MIN AND MICROSECONDS
THE INTENSITY OF AN ULTRASOUND BEAM IS DEFINED AS THE ___ IN A BEAM ___ BY THE ___ OF THE BEAM.
POWER, MULTIPLIED, DIAMETER
AMPLITUDE, DIVIED, AREA
POWER, DIVIDED, AREA
AMP, MULT, CIRCUMFERENCE,
POWER, DIVIDED, AREA
THE PULSE DURATION CANNOT BE CHANGED UNDER ANY CIRCUMSTANCES OR BY ANY ACTION OF THE SONOGRAPHER
TRUE
FALSE
FALSE
HOW MANY NANOSECONDS ARE IN 7 SECONDS?
7 BILLION
WHAT ARE THE UNITS USED FOR DENSITY
MASS PER UNIT VOLUME
WAVES IN THE ULTRASOUND RANGE DONT BEHAVE IN THE SAME GENERAL MANNER AS A SOUND WAVE THAT ARE AUDIBLE.
TRUE
FALSE
FALSE
WHAT ARE THE UNITS OF THE TRANSMITTED INTENSITY OF A SOUND WAVE?
W/CM^2
WATTS
dB
NONE
W/CM^2
WHICH OF THE FOLLOWING BEST DESCRIBES THE SPL
FREQ X WAVELENGTH
PRF X WAVELENGTH
WAVELENGTH X CYCLES IN PULSE
DF X WAVELENGTH
WAVELENGTH X CYCLES IN PULSE
WHT TERM IS THE RECIPICAL OF MEGA
NANO
KILO
MACRO
MICRO
MICRO
DESCRIBE A TRANSVERSE WAVE AND LONGATUDIONAL WAVE
LONGITUDINAL WAVE IS DEFINED AS A WACE WHOES PARTICALS VIBRATE BACK AND FORTH IN THE SAME DIRECTION AS THE WAVES PROPAGATION
TRANSVERSE WAVE IS THE DIRECETION OF PARTICALS PERPENDICTULAR THEN DIRECTION
WHAT IS THE RECIPCAL OF FREQUENCY
PERIOD
WAHT HAPPENDS TO AN ACOUSTIC BEAMS INTENSITY WHEN TEH POWER OF THE BEAM INCREASES 25% WHILE THE CROSS SECTIONAL AREA OF THE BEAM REMAINS THE SAME?
INCREASED 25%
TEH MAX IMAGING DEPTH DURING AN EXAM IS UNCHANGED, A NEW TRANSDUCER WITH A LONGER PULSE DURATION IS USED. THE DF IS INCREASED
TRUE
FALSE
TRUE
SELECT THE SEQUENCE THAT APPEARS IN INCREASING ORDER.
A. MEGA, KILO, HECTO, MILLI, GIGA
B. NANO, MILLI, MICRO, DECI, DECA, MEGA
C. CENTI, DECI, DECA, HECTO
D. MILLI, HECTO, CENTI, DECI, NANO, GIGA
C. CENTI, DECI, DECA, HECTO
WHAT ARE THE TWO CHARACTERISTICS OF A SOUND WAVE
MECHANICAL AND LONGITUDINAL
WAVE A IS ONE-FITH THE SIZE OF WAVE B. HOW DOES THE PERIOD OF WAVE A COMPARE WITH B?
A IS 5 TIMES AS LONG AS B
WAHT HAPPENDS TO THE INTENSITY OF AN ULTRASOUND BEAM WHEN THE BEAMS CROSS SECTIONAL ARE REMAINS UNCHANGED WHILE THE AMP OF TEH WAVE TRIPLES?
INCREASES 9 TIMES
WHILE USING THE SAME ULTRASOUND MACHINE AND TRANSDUCER, WHICH OF THE FOLLOWING CAN A SONOGRAPHER ALTER
PRP
PRF
DF