BMET Course 105 Q2

What are the four fetus blood vessels assessed when using color ultrasound?

• Umbilica Artery

• Aorta

• Middle Cerebral Arteries

• Uterine Arteries

• Superior Vesical Artery

What are the five waveform parameters associated with sound waves

• Period

• Amplitude

• Wavelength

• Frequency

• Velocity

Single Wave Cycle

• Period

• Amplitude

• Wavelength

• Frequency

• Velocity

• Peak Pressure or "height" of wave
• Represents the "loudness" of the wave

• Period

• Amplitude

• Wavelength

• Frequency

• Velocity

Distance traveled during a single cycle

• Period

• Amplitude

• Wavelength

• Frequency

• Velocity

• Number of times the wave is repeated per second
• Expressed in Hertz

• Period

• Amplitude

• Wavelength

• Frequency

• Velocity

• Speed of the wave
• 1540 m/sec in soft tissue
• Determined by density/temperature

• Period

• Amplitude

• Wavelength

• Frequency

• Velocity

Velocity speed is

• 1540 m/s in soft tissue

• 15.4 m/s in soft tissue

• 1.54 m/s in soft tissue

• 154 m/s in soft tissue

Frequency is

• Number of times the wave is repeated per second

• Expressed in Hertz

• Single Wave Cycle

• Temperature of material

• Speed of the wave

Advantages of using ultrasound

• non-invasive

• affordance

• Bone and Air penetration limitation

• Must look for acoustic window