Mechanical transducer Study guides, Class notes & Summaries

SPI ARDMS EXAM |Q & A |ALREADY GRADED A+ |2024 UPDATE What type of wave is sound? Correct Ans ~ mechanical and longitudinal The frequency ranges for ultrasound are: Correct Ans ~ >20 kHz The speed of sound in soft tissue is: Correct Ans ~ 1540 m/s which of the following transducers fires the elements in groups? A. Linear sequenced array B. Phased array C. Continuous-wave transducer D. Single-element transducer Correct Ans ~ A Enhancement is caused by** Correct Ans ~ weakly attenuati...

The paper speed used with EFM in North America is: a. 1cm/min b. 2cm/min c. 3cm/min - C. 3cm/min The US transducer on the EFM measures the a. Electrical signal of the fetal heart b. Mechanical movement of the fetal heart reflected off of sound waves c. R to R intervals of the fetal heart - b. Mechanical movement of the fetal heart reflected off of sound waves The purpose of the autocorrelation in external monitoring is to a. Compare incoming waveforms for comparison b. Decrease signal...

Sonography Principles and Instrumentation - ARDMS SPI Multiple Choice Exam Questions and Answers-A mechanical transducer utilizes: a. transmit focus b. receive focus c. fixed focus d. dynamic aperture focusing - c. fixed focus; sonographer cannot determine the location of # of foci. mechanical transducer uses cross sectional imaging, rotating wheel, wobbler, oscillating mirror A reflection will occur at the boundary of two media if the acoustic impedences of the two media are: a. equal ...

Edelman SPI review questions & Answers 2023. ______ is the distance covered by one cycle. a) pulse length b) wavelength c) cycle distance d) cycle duration ______ is the time to complete one cycle a) pulse duration b) pulse period c) period d) duration period ________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: a) refraction b) Rayleigh Scattering c) scattering d) reflection _________ resolution is...

ARDMS SPI STUDY GUIDE QUESTIONS AND ANSWERS ALREADY PASSED In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is the length of time it takes for one complete wavelength to pass a fixed poin...

Waves are classified according to whether or not they need a medium in which to propagate. A wave which needs a medium is called a(n) ______________________ wave, a wave which will propagate in a vacuum (the absence of a medium) is called a(n) ________________ wave correct answer: mechanical, electromagnetic What are the two classifications of mechanical waves? correct answer: Transverse and longitudinal Frequency has the units of: (select all that apply) A. Cycles/second B. Hz C. Her...

Provides a measure of the maximum potential damage associated with an occurrence - Answer- exposure ________________ is an essential goal for all public entities - Answer- continuity of operations An organization must meet the standard of care that it owes to others in order to ensure that... - Answer- legal obligations are satisfied What are the five steps of the risk management process? - Answer- - scan environment - identify risk - analyze risk - treat risk - monitor and review ...

What is an advantage of single crystal- or pure-wave crystal transducer? A) wide bandwidth B) lower frequencies at higher resolution C) absence of aliasing with pulsed Doppler D) higher frame rate E) greater steering angles - Answer- A If you wish to perform a sonogram with the largest possible field of view in the near field and at depth, what type of array transducer would be preferable? A) linear array B) curved array C) phased array D) sector E) all of the above - Answer- ...

1. The paper speed used with EFM in North America is: a. 1cm/min b. 2cm/min c. 3cm/min ANS : c. 3cm/min 2. The US transducer on the EFM measures the a. Electrical signal of the fetal heart b. Mechanical movement of the fetal heart reflected off of sound waves c. R to R intervals of the fetal heart ANS : b. Mechanical movement of the fetal heart reflected off of sound waves 3. The purpose of the autocorrelation in external monitoring is to a. Compare incoming waveforms for comparison ...

ARDMS- SPI Comprehensive Exam (2023/24) || Questions & 100% Correct Solutions ARDMS- SPI Comprehensive Exam (2023/24) || Questions & 100% Correct Solutions Mechanical transducer image shape: - ANSWER - fan or sector-shaped Mechanical transducers have a _________ focal depth. - ANSWER - fixed When there is any damage done to the crystal in a mechanical transducer, - ANSWER - the entire image is lost Array transducers are comprised of... - ANSWER - a single slab of PZT cut into ...