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Exam (elaborations)

Ultrasound Physics - Mock Exam Questions for SPI Questions and Answers (100% Pass)

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  • Course
  • Ultrasound
  • Institution
  • Ultrasound

Which of the following transducers will have the worst axial resolution? a. Vector array, 3 MHz b. Linear Sequential Array, 6 MHZ c. Linear Phased Array 7.5 MHZ d. Annular Array, 6 MHz Vector array, 3 MHz A sound wave is traveling in the body and propagates from muscle to air. What percent...

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  • November 18, 2024
  • 48
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Ultrasound
  • Ultrasound
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Ultrasound Physics (SPI) Review
Questions and Answers (100% Pass)
Meaning of Anechoic?


✓ Dark, less echos.




Meaning of Echogenic?


✓ Full of echoes.




Meaning of Hyperechoic?


✓ More echoes than adjacent tissue.




Meaning of Hypoechoic?


✓ Less Echoes than adjacent tissue.




Meaning of Isoechoic?


✓ Similar/same echoes than adjacent tissue.




Meaning of Homogenous?




Master01 |Excellent Study Material| Latest update

, 1|Page | © copyright Master01| Grade A+

✓ Uniform Texture. (smooth)




Meaning of Heterogenous?


✓ Different levels of echogenicity.




Definition of Wavelength?


✓ The length of one cycle.

✓ -Denoted by (Lamda)




Unit for Wavelength?


✓ m, cm, mm




Definition of Propagation Speed?


✓ The speed at which sound travels through a medium




Unit for Propagation Speed?


✓ m/s or mm/microseconds




Propagation Speed depends on?




Master01 |Excellent Study Material| Latest update

, 1|Page | © copyright Master01| Grade A+

✓ Density, Stiffness.




Definition of Density?


✓ Concentration of matter.

✓ -Inversely related to prop speed.




Definition of Stiffness aka "Bulk Modulus"?


✓ The resistance of a medium to compression.

✓ -Stiffness is directly proportional to speed.




What are the two types of Ultrasound Waves?


✓ 1.) Electromagnetic - Wave travels through a vacuum.

✓ 2.) Mechanical - Wave must travel through a medium.




What are two kinds of Mechanical Waves?


✓ A.) Transverse

✓ B.) Longitudinal




Ultrasound images are made up of typically how many scan lines?




Master01 |Excellent Study Material| Latest update

, 1|Page | © copyright Master01| Grade A+

✓ 128 - 256 scan lines.

✓ (more the better resolution)




Scanning format for Sector (shape)?


✓ Pie Shaped, Scan lines originate from the same location and spread

out as they travel.

✓ .

✓ /\

✓ /\




Scanning format for Modified Sector?


✓ Scan lines originate from different points, but close together.

✓ ///\\\

✓ /// \\\




Scanning format for Linear?


✓ Scan lines originate from different points and travel parallel to each

other. |||||||

✓ |||||||




Master01 |Excellent Study Material| Latest update

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