CET Echocardiography Imaging Techniques 3

Question 1

During a transesophageal echocardiogram (TEE), the mid-esophageal four-chamber view is obtained at approximately which depth from the incisors?

Accepted Answer

25-30 cm

Answer

The mid-esophageal position is typically located 25-30 cm from the incisors, placing the probe adjacent to the left atrium.

Question 2

Which artifact appears as multiple equally spaced lines parallel to a strong reflector and is caused by the ultrasound beam bouncing between two highly reflective surfaces?

Accepted Answer

Reverberation artifact

Answer

Reverberation artifacts occur when echoes bounce repeatedly between two reflective interfaces, creating false parallel lines at equal intervals on the image.

Question 3

In the parasternal short-axis view at the level of the mitral valve, which structure appears as a 'fish mouth' opening during diastole?

Accepted Answer

Mitral valve

Answer

In the parasternal short-axis view at the mitral valve level, the anterior and posterior leaflets open in diastole, creating a characteristic fish-mouth or oval orifice appearance.

Question 4

What is the primary advantage of using contrast echocardiography with agitated saline for a bubble study?

Accepted Answer

Detects intracardiac right-to-left shunts

Answer

Agitated saline microbubbles are too large to pass through the pulmonary capillaries, so their appearance in the left heart indicates a right-to-left shunt such as a patent foramen ovale.

Question 5

Which parameter on the ultrasound machine controls the amplification of returning echoes from deeper structures to compensate for tissue attenuation?

Accepted Answer

Time-gain compensation (TGC)

Answer

Time-gain compensation (TGC) applies progressively higher amplification to echoes returning from greater depths, offsetting signal loss due to tissue attenuation.

(CET) Certified Echocardiography Technician Practice Test

(CET) Certified Echocardiography Technician Practice Test

CET Echocardiography Imaging Techniques 3