Sonography Canada Core Practice Exam
– Verified
Questions and Answers | Already Passed!
Questions with Answers
Below are 50 questions from the Sonography Canada Core Practice Exam (2025 update), covering the
full scope of the exam. These are based on verified reports from recent exam takers and aligned with
Sonography Canada’s core competencies, including ultrasoun
d physics, anatomy, patient care, and
professional practice.
1. What is the primary source of ultrasound wave generation in diagnostic imaging?
A) Piezoelectric crystals
B) Electromagnetic coils
C) Laser beams
D) Radioactive isotopes
Answer: A) Piezoelectric crystals
Solution: Piezoelectric crystals vibrate when an electric current is applied, producing ultrasound
waves.
2. What is the speed of sound in soft tissue?
A) 1000 m/s
B) 1540 m/s
C) 2000 m/s
D) 330 m/s
Answer: B) 1540 m/s
Solution: 1540 m/s is the standard speed used for soft tissue in ultrasound imaging.
3. What is the term for the weakening of an ultrasound beam as it travels through tissue?
A) Refraction
B) Attenuation
C) Reflection
D) Diffraction
Answer: B) Attenuation
Solution: Attenuation includes absorption, scattering, and reflection of the ultrasound beam.
, 4. Which ultrasound mode displays motion, such as blood flow?
A) A-mode
B) B-mode
C) Doppler mode
D) M-mode
Answer: C) Doppler mode
Solution: Doppler mode measures velocity of moving structures like blood.
5. What is the normal range for amniotic fluid index (AFI) in a healthy pregnancy?
A) 2-5 cm
B) 5-25 cm
C) 25-35 cm
D) 35-50 cm
Answer: B) 5-25 cm
Solution: AFI of 5-25 cm indicates normal amniotic fluid volume.
6. What does a hypoechoic structure appear as on ultrasound?
A) Bright white
B) Dark gray or black
C) Mixed gray
D) Completely transparent
Answer: B) Dark gray or black
Solution: Hypoechoic reflects fewer echoes, appearing darker.
7. Which transducer frequency is best for imaging superficial structures?
A) 2-5 MHz
B) 5-10 MHz
C) 10-15 MHz
D) 15-20 MHz
Answer: C) 10-15 MHz
Solution: Higher frequencies provide better resolution for superficial tissues.
8. What is the purpose of the coupling gel in ultrasound?
A) Amplify sound waves
B) Reduce air interface and improve sound transmission
C) Cool the transducer
– Verified
Questions and Answers | Already Passed!
Questions with Answers
Below are 50 questions from the Sonography Canada Core Practice Exam (2025 update), covering the
full scope of the exam. These are based on verified reports from recent exam takers and aligned with
Sonography Canada’s core competencies, including ultrasoun
d physics, anatomy, patient care, and
professional practice.
1. What is the primary source of ultrasound wave generation in diagnostic imaging?
A) Piezoelectric crystals
B) Electromagnetic coils
C) Laser beams
D) Radioactive isotopes
Answer: A) Piezoelectric crystals
Solution: Piezoelectric crystals vibrate when an electric current is applied, producing ultrasound
waves.
2. What is the speed of sound in soft tissue?
A) 1000 m/s
B) 1540 m/s
C) 2000 m/s
D) 330 m/s
Answer: B) 1540 m/s
Solution: 1540 m/s is the standard speed used for soft tissue in ultrasound imaging.
3. What is the term for the weakening of an ultrasound beam as it travels through tissue?
A) Refraction
B) Attenuation
C) Reflection
D) Diffraction
Answer: B) Attenuation
Solution: Attenuation includes absorption, scattering, and reflection of the ultrasound beam.
, 4. Which ultrasound mode displays motion, such as blood flow?
A) A-mode
B) B-mode
C) Doppler mode
D) M-mode
Answer: C) Doppler mode
Solution: Doppler mode measures velocity of moving structures like blood.
5. What is the normal range for amniotic fluid index (AFI) in a healthy pregnancy?
A) 2-5 cm
B) 5-25 cm
C) 25-35 cm
D) 35-50 cm
Answer: B) 5-25 cm
Solution: AFI of 5-25 cm indicates normal amniotic fluid volume.
6. What does a hypoechoic structure appear as on ultrasound?
A) Bright white
B) Dark gray or black
C) Mixed gray
D) Completely transparent
Answer: B) Dark gray or black
Solution: Hypoechoic reflects fewer echoes, appearing darker.
7. Which transducer frequency is best for imaging superficial structures?
A) 2-5 MHz
B) 5-10 MHz
C) 10-15 MHz
D) 15-20 MHz
Answer: C) 10-15 MHz
Solution: Higher frequencies provide better resolution for superficial tissues.
8. What is the purpose of the coupling gel in ultrasound?
A) Amplify sound waves
B) Reduce air interface and improve sound transmission
C) Cool the transducer
