SPI II EXAM 4 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
1. The device that is used to observe the ultrasound beam for calculations is called
A. String Phantom
B. Schileren
C. Radiation Force balance
D. Flowmetry
Answer:
B
Question:
2. If both the Gold standard and ultrasound exam detect NO disease that is referred to as
A. True positive
B. True accuracy
C. True negative
D. Sensuosity
Answer:
C
Question:
3. Tissue equivalent phantoms are designed to mimic what?
A. Blood flow
B. Malignancy
C. Soft tissue
D. Water
Answer:
C
Question:
4. Which of the following has been recommended by the AIUM to reduce the risks of bioeffects?
A. Prudent usage
B. High output gains
C. Prolonged exposure times
D. Above 100 W/cm2 in focused transducers
Answer:
A
Question:
5. Thermal indexes below what range are considered acceptable for diagnostic ultrasound
A. 100
B. 2
C. 10
D. 20
Answer:
B
,Question:
6. The AIUM states that bioeffects
A. Have occured in humans at exposure times above 50 hours
B. Have been observed in humans with intensities above 100 m/cm2 unfocused
C. To date have not been observed in any humans
D. Has no comment on the matter
Answer:
C
Question:
7. With stable cavitation; bubbles will
A. Collapse
B. Resonate
C. Implode
D. Not move
Answer:
B
Question:
8. Sensitivity is a statistical parameter that is a measure of a test's ability to
A. detect the presence of disease when disease exists
B. detect the absence of disease when no disease exist
C. assume that the Gold Standard is perfect
D. consistently match the Gold Standard
Answer:
A
Question:
9. If the transmit power level is unchanges, which one of the following frequencies will be associated
with the lowest MI?
A. 2.5 MHz
B. 5MHz
C. 8MHz
D. 3.5 MHz
Answer:
C
Question:
10. Which of the following intensities has the highest value during pulsed ultrasound?
A. SPPA
B. SPTP
C. SATA
D. SPTA
Answer:
B
, Question:
11. The device that can measure acoustic pressure at specific locations within the ultrasound beam is
called:
A. Liquid Crystal
B. Hydrophone Probe
C. Calorimeter
D. Schlieren Probe
Answer:
B
Question:
12. The mechanical index (MI) is directly proportional to
A. Frequency
B. Peak Negative Pressure
C. Microbubble size
D. Gain in dB
Answer:
B
Question:
13. Which bioeffect is associated with the decomposition of water into free radicals?
A. Stable cavitation
B. Transient cavitation
C. Absorption
D. Microstreaming
Answer:
B
Question:
14. A potential ultrasound bioeffect associated with high SPPA intensity is:
A. miscarriage
B. electrical shock
C. impedance mismatch
D. cavitation
Answer:
D
Question:
15. Which of the following units are used to measure intensity in an ultrasound application?
A. mW/cm
B. mW/cm2
C. watts/m
D. watts/m2
Answer:
B
QUESTIONS AND CORRECT ANSWERS
Question:
1. The device that is used to observe the ultrasound beam for calculations is called
A. String Phantom
B. Schileren
C. Radiation Force balance
D. Flowmetry
Answer:
B
Question:
2. If both the Gold standard and ultrasound exam detect NO disease that is referred to as
A. True positive
B. True accuracy
C. True negative
D. Sensuosity
Answer:
C
Question:
3. Tissue equivalent phantoms are designed to mimic what?
A. Blood flow
B. Malignancy
C. Soft tissue
D. Water
Answer:
C
Question:
4. Which of the following has been recommended by the AIUM to reduce the risks of bioeffects?
A. Prudent usage
B. High output gains
C. Prolonged exposure times
D. Above 100 W/cm2 in focused transducers
Answer:
A
Question:
5. Thermal indexes below what range are considered acceptable for diagnostic ultrasound
A. 100
B. 2
C. 10
D. 20
Answer:
B
,Question:
6. The AIUM states that bioeffects
A. Have occured in humans at exposure times above 50 hours
B. Have been observed in humans with intensities above 100 m/cm2 unfocused
C. To date have not been observed in any humans
D. Has no comment on the matter
Answer:
C
Question:
7. With stable cavitation; bubbles will
A. Collapse
B. Resonate
C. Implode
D. Not move
Answer:
B
Question:
8. Sensitivity is a statistical parameter that is a measure of a test's ability to
A. detect the presence of disease when disease exists
B. detect the absence of disease when no disease exist
C. assume that the Gold Standard is perfect
D. consistently match the Gold Standard
Answer:
A
Question:
9. If the transmit power level is unchanges, which one of the following frequencies will be associated
with the lowest MI?
A. 2.5 MHz
B. 5MHz
C. 8MHz
D. 3.5 MHz
Answer:
C
Question:
10. Which of the following intensities has the highest value during pulsed ultrasound?
A. SPPA
B. SPTP
C. SATA
D. SPTA
Answer:
B
, Question:
11. The device that can measure acoustic pressure at specific locations within the ultrasound beam is
called:
A. Liquid Crystal
B. Hydrophone Probe
C. Calorimeter
D. Schlieren Probe
Answer:
B
Question:
12. The mechanical index (MI) is directly proportional to
A. Frequency
B. Peak Negative Pressure
C. Microbubble size
D. Gain in dB
Answer:
B
Question:
13. Which bioeffect is associated with the decomposition of water into free radicals?
A. Stable cavitation
B. Transient cavitation
C. Absorption
D. Microstreaming
Answer:
B
Question:
14. A potential ultrasound bioeffect associated with high SPPA intensity is:
A. miscarriage
B. electrical shock
C. impedance mismatch
D. cavitation
Answer:
D
Question:
15. Which of the following units are used to measure intensity in an ultrasound application?
A. mW/cm
B. mW/cm2
C. watts/m
D. watts/m2
Answer:
B
