EACVI EACTAIC in Adult Transoesophageal
Echocardiography (TOE) Exam
Question 1. Which frequency range is most commonly used in adult transoesophageal echocardiography
(TOE) probes?
A) 1-2 MHz
B) 2-7 MHz
C) 8-15 MHz
D) 15-20 MHz
Answer: B
Explanation: Adult TOE probes typically operate in the 2-7 MHz range, balancing penetration and
resolution for cardiac imaging.
Question 2. What physical principle allows Doppler echocardiography to measure blood flow velocities?
A) Piezoelectric effect
B) Doppler effect
C) Refraction
D) Acoustic impedance
Answer: B
Explanation: Doppler echocardiography utilizes the Doppler effect, which describes the change in
frequency of sound waves reflected by moving red blood cells.
Question 3. Which control on the ultrasound machine adjusts image brightness?
A) Gain
B) Depth
C) Focus
D) Time-gain compensation
Answer: A
Explanation: The gain control increases or decreases the overall brightness of the ultrasound image.
Question 4. Which artifact is characterized by repeating echoes equidistant from the transducer?
A) Shadowing
