Specular reflectors - Study guides, Class notes & Summaries

Will not cause a redirection of part of the ultrasound energy CORRECT ANSWERS: absorption You are scanning a large mass composed primarily of fat. What will you most likely encounter? CORRECT ANSWERS: axial misregistration of object distal to the mass on the screen due to the slower propagation speed through fat What 2 conditions must be present to cause a refraction in soundwave? CORRECT ANSWERS: oblique incidence and change in propagation speed What may be detected with refraction...

ARDMS SPI Study Guide Questions and Answers 2023 One reason why focused beams with low intensities are less likely to cause bioeffects is that a focused beam is less efficient in heating a large mass of tissue to a critical temperature. True Typically, the sonographer can adjust the compression function of a receiver. True Mean frequency is calculated from weighted sum of frequencies in the power spectrum. True Refraction always occurs at the interface between two media ...

ARDMS SPI EXAM STUDY GUIDE 180 Questions with Verified Answers In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... - CORRECT ANSWER Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? - CORRECT ANSWER 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in - CORRECT ANSWER Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is t...

ARDMS SPI Practice Exam B. Questions pool. 100% Accurate. Rated A Which artifact is illustrated by this image? - a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? - a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? - a) Deny performance of the exam until a written request is received b) Seek approval from sup...

SPI Practice Test Questions and answers. 100% Accurate. Rated A Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse ...

ARDMS SPI TEST BANK Exam B QUESTIONS FULLY SOLVED 2023Which artifact is illustrated by this image? a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? a) Deny performance of the exam until a written request is received b) Seek approval from supervisor ...

Which artifact is illustrated by this image? - Answer- a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? - Answer- a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? - Answer- a) Deny performance of the exam until a written request is received b) Seek approval from supervisor c) Verbally repeat the request bac...

Which artifact is illustrated by this image? a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? a) Deny performance of the exam until a written request is received b) Seek approval from supervisor c) Verbally repeat the request back to the referrer t...

One reason why focused beams with low intensities are less likely to cause bioeffects is that a focused beam is less efficient in heating a large mass of tissue to a critical temperature. - Answer- True Typically, the sonographer can adjust the compression function of a receiver. - Answer- True Mean frequency is calculated from weighted sum of frequencies in the power spectrum. - Answer- True Refraction always occurs at the interface between two media when the propagation speeds of the ...

ARDMS- SPI Questions and Answers with Certified Solutions The horizontal axis, or x-axis Runs side to side The vertical axis, or y-axis Runs up and down Unrelated Two items that are not associated Related or Proportional Two items that are associated or affiliated However, the relationship between the items does not have to be specified Directly related or Directly proportional Two items that are associated such that when one item increases, the other increases Inversely related or inversel...