ARDMS SPI LATEST EXAM 2025 QUESTIONS AND CORRECT
ANSWERS (GRADED A+)
When the direction of the wave propagation is parallel to the particle motion of the
medium, the wave being transmitted is called a:
A) surface wave.
B) longitudinal wave.
C) transverse wave.
D) non-linear sound. - ✔✔ANSWER✔✔>>B) longitudinal wave
23. Which transducer will have the most penetration?
A) 8 MHz linear transducer
B) 6 MHz tightly curved array
C) 2 MHz
25. Which transducer will provide optimal depth resolution?
A) 4 MHz phased array
B) 2 MHz curvilinear array
C) 10 MHz linear array
D) 6 MHz endocavity array - ✔✔ANSWER✔✔>>C) 10 MHz linear array
26. To improve the system frame rate, what action can be taken?
A) Increase frequency
B) Decrease PRF
C) Decrease line density
D) Increase sector size - ✔✔ANSWER✔✔>>C) Decrease line density
27. The resolution used to distinguish between closely spaced objects is known as:
A) lateral
B) range
C) temporal
D) axial - ✔✔ANSWER✔✔>>A) lateral
28. Why does increasing the number of scan lines improve lateral resolution?
A) The amount of work will increase and make frame rate faster
B) There will be higher line density and narrow beams
C) The more scan lines, the deeper the sound will penetrate
D) Increasing scan lines will not improve lateral resolution - ✔✔ANSWER✔✔>>B) There
will be higher line density and narrow beams
,29. Which statement is not true regarding PRF?
A) Increasing PRF improves frame rate
B) PRF and duty factor are inversely related
C) PRF depends of the depth
D) PRF refers to how many pulses are fired in one second - ✔✔ANSWER✔✔>>B) PRF
and duty factor are inversely related
30. Which actions will adjust the spatial resolution?
A) Scan lines and transducer frequency
B) Sector size and reflection
C) Focal points and frame rate
D) Frequency and PRF - ✔✔ANSWER✔✔>>A) Scan lines and transducer frequency
1. A wide bandwidth and low quality factor contribute to:
A) better penetration.
B) better focusing.
C) better axial resolution.
D) better frame rate. - ✔✔ANSWER✔✔>>C) better axial resolution.
2. The transducer element becomes mechanical when:
A) it is used for mechanical focusing.
B) it is hit with electrical voltage and converts the energy into sound.
C) it never becomes mechanical.
D) it is cracked. - ✔✔ANSWER✔✔>>B) it is hit with electrical voltage and converts the
energy into sound.
3. Quality factor will lower when:
A) bandwidth widens.
B) the beam former sets a delay.
C) there is a longer pulse.
D) phasing occurs. - ✔✔ANSWER✔✔>>A) bandwidth widens.
4. Which transducer type will have the lowest density in the far field?
A) 4 MHz phased array
B) 3.5 MHz curvilinear array
C) 6 MHz endocavity array
D) 9 MHz linear array - ✔✔ANSWER✔✔>>C) 6 MHz endocavity array
5. Which transducer uses time delays to electronically steer the beam?
A) Curved array
B) Annular
C) Linear sequential array
D) Phased array - ✔✔ANSWER✔✔>>D) Phased array
, 6. Which feature of the transducer is manufactured to support better image axial
resolution?
A) Element
B) Power cord
C) Lens
D) Backing material - ✔✔ANSWER✔✔>>D) Backing material
7. In a B-mode image, the focal point is electronically changed. Which of the following
techniques is used?
A) Mirror
B) Mechanical
C) Transmit
D) Lens - ✔✔ANSWER✔✔>>C) Transmit
8. The center operating frequency of a transducer is determined by:
A) impedance matching layer.
B) crystal thickness.
C) bandwidth.
D) crystal shape. - ✔✔ANSWER✔✔>>B) crystal thickness.
9. Coupling gel is used to:
A) improve axial resolution.
B) increase damping.
C) increase transmission.
D) increase reflection factor. - ✔✔ANSWER✔✔>>C) increase transmission.
10. The 3D profile of the beam in a linear array is controlled by:
A) acoustic lens.
B) transmit focus.
C) phasing.
D) beam former. - ✔✔ANSWER✔✔>>A) acoustic lens.
11. Which transducer employs electronic beam steering to create a wide field of view?
A) Curvilinear
B) Mechanical transducer
C) Phased array
D) Linear sequential - ✔✔ANSWER✔✔>>C) Phased array
12. Dynamic focusing is used by:
A) all array transducers.
B) only phased arrays.
C) none.
D) only curved arrays. - ✔✔ANSWER✔✔>>A) all array transducers.
14. A thinner element will have:
ANSWERS (GRADED A+)
When the direction of the wave propagation is parallel to the particle motion of the
medium, the wave being transmitted is called a:
A) surface wave.
B) longitudinal wave.
C) transverse wave.
D) non-linear sound. - ✔✔ANSWER✔✔>>B) longitudinal wave
23. Which transducer will have the most penetration?
A) 8 MHz linear transducer
B) 6 MHz tightly curved array
C) 2 MHz
25. Which transducer will provide optimal depth resolution?
A) 4 MHz phased array
B) 2 MHz curvilinear array
C) 10 MHz linear array
D) 6 MHz endocavity array - ✔✔ANSWER✔✔>>C) 10 MHz linear array
26. To improve the system frame rate, what action can be taken?
A) Increase frequency
B) Decrease PRF
C) Decrease line density
D) Increase sector size - ✔✔ANSWER✔✔>>C) Decrease line density
27. The resolution used to distinguish between closely spaced objects is known as:
A) lateral
B) range
C) temporal
D) axial - ✔✔ANSWER✔✔>>A) lateral
28. Why does increasing the number of scan lines improve lateral resolution?
A) The amount of work will increase and make frame rate faster
B) There will be higher line density and narrow beams
C) The more scan lines, the deeper the sound will penetrate
D) Increasing scan lines will not improve lateral resolution - ✔✔ANSWER✔✔>>B) There
will be higher line density and narrow beams
,29. Which statement is not true regarding PRF?
A) Increasing PRF improves frame rate
B) PRF and duty factor are inversely related
C) PRF depends of the depth
D) PRF refers to how many pulses are fired in one second - ✔✔ANSWER✔✔>>B) PRF
and duty factor are inversely related
30. Which actions will adjust the spatial resolution?
A) Scan lines and transducer frequency
B) Sector size and reflection
C) Focal points and frame rate
D) Frequency and PRF - ✔✔ANSWER✔✔>>A) Scan lines and transducer frequency
1. A wide bandwidth and low quality factor contribute to:
A) better penetration.
B) better focusing.
C) better axial resolution.
D) better frame rate. - ✔✔ANSWER✔✔>>C) better axial resolution.
2. The transducer element becomes mechanical when:
A) it is used for mechanical focusing.
B) it is hit with electrical voltage and converts the energy into sound.
C) it never becomes mechanical.
D) it is cracked. - ✔✔ANSWER✔✔>>B) it is hit with electrical voltage and converts the
energy into sound.
3. Quality factor will lower when:
A) bandwidth widens.
B) the beam former sets a delay.
C) there is a longer pulse.
D) phasing occurs. - ✔✔ANSWER✔✔>>A) bandwidth widens.
4. Which transducer type will have the lowest density in the far field?
A) 4 MHz phased array
B) 3.5 MHz curvilinear array
C) 6 MHz endocavity array
D) 9 MHz linear array - ✔✔ANSWER✔✔>>C) 6 MHz endocavity array
5. Which transducer uses time delays to electronically steer the beam?
A) Curved array
B) Annular
C) Linear sequential array
D) Phased array - ✔✔ANSWER✔✔>>D) Phased array
, 6. Which feature of the transducer is manufactured to support better image axial
resolution?
A) Element
B) Power cord
C) Lens
D) Backing material - ✔✔ANSWER✔✔>>D) Backing material
7. In a B-mode image, the focal point is electronically changed. Which of the following
techniques is used?
A) Mirror
B) Mechanical
C) Transmit
D) Lens - ✔✔ANSWER✔✔>>C) Transmit
8. The center operating frequency of a transducer is determined by:
A) impedance matching layer.
B) crystal thickness.
C) bandwidth.
D) crystal shape. - ✔✔ANSWER✔✔>>B) crystal thickness.
9. Coupling gel is used to:
A) improve axial resolution.
B) increase damping.
C) increase transmission.
D) increase reflection factor. - ✔✔ANSWER✔✔>>C) increase transmission.
10. The 3D profile of the beam in a linear array is controlled by:
A) acoustic lens.
B) transmit focus.
C) phasing.
D) beam former. - ✔✔ANSWER✔✔>>A) acoustic lens.
11. Which transducer employs electronic beam steering to create a wide field of view?
A) Curvilinear
B) Mechanical transducer
C) Phased array
D) Linear sequential - ✔✔ANSWER✔✔>>C) Phased array
12. Dynamic focusing is used by:
A) all array transducers.
B) only phased arrays.
C) none.
D) only curved arrays. - ✔✔ANSWER✔✔>>A) all array transducers.
14. A thinner element will have:
