DMS 206 Test 2 2026 – Advanced Diagnostic Medical Sonography Concepts and
Imaging Study Guide
What is the wavelength of 3MHz ultrasound in soft tissue - correct answer ✔✔ 0.513 mm
What are the two properties that establish sounds propagation speed in a given medium -
correct answer ✔✔ Density and stiffness
How far away is an interface in tissue if the elapsed time for the sound wave to travel out and
back is 320 us? - correct answer ✔✔ 24.64 cm
You are imaging a kidney with a 2.5 MHz transducer. You change to a 5.0 MHz transducer. what
will happen to the wavelength? - correct answer ✔✔ The wavelength will decrease.
Wavelength is a measure of - correct answer ✔✔ distance
The wavelength in a medium having a wave velocity of 1500 m/s employing a transducer
frequency of 5 MHz is - correct answer ✔✔ 0.3 mm
What is the velocity of ultrasound in a medium if the wavelength is 2mm and the frequency is 5
MHz? - correct answer ✔✔ 1,000,000 cm/s
A decrease in amplitude by a factor 10 is equal to - correct answer ✔✔ -20 db
To gain deeper penetration, the sonographer will select a lower frequency transducer - correct
answer ✔✔ True
A wave vibrating at 20 cycles per second has a frequency of - correct answer ✔✔ 20 Hz
Imaging Study Guide
What is the wavelength of 3MHz ultrasound in soft tissue - correct answer ✔✔ 0.513 mm
What are the two properties that establish sounds propagation speed in a given medium -
correct answer ✔✔ Density and stiffness
How far away is an interface in tissue if the elapsed time for the sound wave to travel out and
back is 320 us? - correct answer ✔✔ 24.64 cm
You are imaging a kidney with a 2.5 MHz transducer. You change to a 5.0 MHz transducer. what
will happen to the wavelength? - correct answer ✔✔ The wavelength will decrease.
Wavelength is a measure of - correct answer ✔✔ distance
The wavelength in a medium having a wave velocity of 1500 m/s employing a transducer
frequency of 5 MHz is - correct answer ✔✔ 0.3 mm
What is the velocity of ultrasound in a medium if the wavelength is 2mm and the frequency is 5
MHz? - correct answer ✔✔ 1,000,000 cm/s
A decrease in amplitude by a factor 10 is equal to - correct answer ✔✔ -20 db
To gain deeper penetration, the sonographer will select a lower frequency transducer - correct
answer ✔✔ True
A wave vibrating at 20 cycles per second has a frequency of - correct answer ✔✔ 20 Hz
