ULTRASOUND QUIZ

Which component of the ultrasound machine is responsible for both transmission and reception of ultrasound waves?

• Beam Former

• Probe

• Processor

• Pulser

The piezoelectric effect allows the transducer to:

• Convert sound into heat

• Focus ultrasound beams

• Convert electrical energy into mechanical energy and vice versa

• Store ultrasound images

Which transducer type produces a rectangular image?

• Phase Array

• Curvilinear

• Endocavitary

• Linear Array

Phased array transducers are most commonly used for:

• Abdominal imaging

• Cardiac imaging

• Vascular studies

• Superficial structures

A high-frequency transducer (10–15 MHz) provides:

• Deep penetration with low resolution

• Shallow penetration with high resolution

• Deep penetration with high resolution

• Poor resolution and poor penetration

Maximum efficiency of the piezoelectric crystal occurs when its thickness is equal to:

• 1 wavelength

• 1/2 wavelength

• 1/4 wavelength

• 2 wavelengths

The primary purpose of backing material is to:

• Increase beam width

• Focus the ultrasound beam

• Absorb unwanted vibration

• Increase penetration depth

The beam former primarily controls:

• Image storage

• Gray scale mapping

• Echo amplification

• Beam direction and focusing

Which component reduces impedance mismatch between the crystal and the patient’s skin?

• Acoustic lens

• Backing material

• Matching layer

• Pulser

Which system allows electronic storage and hospital-wide viewing of ultrasound images?

• PACS

• Cine loop

• CRT monitor

• Thermal printer