Ultrasound Physics - Mock Exam Questions for SPI. | COMPLETE
QUESTIONS WITH 100% RATED CORRECT ANSWERS!!
Widening of the sound beam is demonstrated in the:
A. focal point
B. focal zone
C. Fresnel zone
D. focal length
E. fraunhofer zone - (answers)E. fraunhofer zone
Weak beams emitted from a linear sequences array transducer are termed:
A. side lobes
B. transverse waves
C. grating lobes
D. Huygens waves
E. mechanical waves - (answers)C. grating lobes
The resonant frequency of a pulse wave is determined by the:
A. diameter of the beam
B. impedance of the matching layer
C. output power of the ultrasound system
D. electrical frequency of the ultrasound system
E. thickness and propagation speed of the element - (answers)E. the thickness and propagation
speed of the element
What is the operating frequency of a two cycle pulse with an element thickness of .2 mm and a
propagation speed of 4 mm\us
A. 1 Mhz
B. 3.5 Mhz
, C. 5 MHz
D. 7.5 MHz
E. 10 MHZ - (answers)E. 10 MHz
On which of the following principles do diagnostic ultrasound transducers operate
A. Snells Law
B. ALARA principle
C. Huygens principle
D. Piezoelectric effect
E. Phased array technology - (answers)D. piezoelectric effect
If the width of the transducer is 5cm, what is the width of the focal point
A. 1cm
B. 2.5cm
C. 5cm
D. 7.5cm
E. 10cm - (answers)B. 2.5cm (1/2 the transducer diameter)
Heat sterilization is not recommended for diagnostic transducers because
A. apodization will occur
B. the housing may be damaged
C. the epoxy in the backing will melt
D. the piezoelectric properties will be lost
E. moisture will cause the electrical wiring to short - (answers)D. the piezoelectric properties will
be lost
Which of the following components is unnecessary in the construction of a continuous wave
transducer
A. matching layer
QUESTIONS WITH 100% RATED CORRECT ANSWERS!!
Widening of the sound beam is demonstrated in the:
A. focal point
B. focal zone
C. Fresnel zone
D. focal length
E. fraunhofer zone - (answers)E. fraunhofer zone
Weak beams emitted from a linear sequences array transducer are termed:
A. side lobes
B. transverse waves
C. grating lobes
D. Huygens waves
E. mechanical waves - (answers)C. grating lobes
The resonant frequency of a pulse wave is determined by the:
A. diameter of the beam
B. impedance of the matching layer
C. output power of the ultrasound system
D. electrical frequency of the ultrasound system
E. thickness and propagation speed of the element - (answers)E. the thickness and propagation
speed of the element
What is the operating frequency of a two cycle pulse with an element thickness of .2 mm and a
propagation speed of 4 mm\us
A. 1 Mhz
B. 3.5 Mhz
, C. 5 MHz
D. 7.5 MHz
E. 10 MHZ - (answers)E. 10 MHz
On which of the following principles do diagnostic ultrasound transducers operate
A. Snells Law
B. ALARA principle
C. Huygens principle
D. Piezoelectric effect
E. Phased array technology - (answers)D. piezoelectric effect
If the width of the transducer is 5cm, what is the width of the focal point
A. 1cm
B. 2.5cm
C. 5cm
D. 7.5cm
E. 10cm - (answers)B. 2.5cm (1/2 the transducer diameter)
Heat sterilization is not recommended for diagnostic transducers because
A. apodization will occur
B. the housing may be damaged
C. the epoxy in the backing will melt
D. the piezoelectric properties will be lost
E. moisture will cause the electrical wiring to short - (answers)D. the piezoelectric properties will
be lost
Which of the following components is unnecessary in the construction of a continuous wave
transducer
A. matching layer
