Mechanical transducer - Study guides, Class notes & Summaries

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 attenuating structures wavele...

ARDMS SPI Exam |Complete Questions with Correct Answers Graded A+ When the direction of the wave propagation is parallel to the particle motion of the medium, the wave being transmitted is called a: A) surface wave. B) longitudinal wave. C) transverse wave. D) non-linear sound. B) longitudinal wave If the sound beam attenuated 6 dB, what will happen to the overall intensity? A) Quadrupled B) Doubled C) Halved D) Quartered D) Quartered Frequency increased from 3 MHz to 6 MHz,...

Which of the following adjustments will change the image data that will be stored in the memory of the ultrasound system? A) Both pre-processing and post-processing B) Post-processing C) Changing monitor contrast settings at the beginning of the exam. D) Pre-Processing - Pre-processing-is performed as the image is "live" or in real time, before it has been stored to memory. Which measurement of beam intensity is used to describe levels of intensity associated with US bioeffects? A) Sp...

SPI Practice Questions Answers A Which of these terms means 'many gray shades'? A wide dynamic range B bistable C high contrast D highly compressed signal E few choices ️A wide dynamic range Which of the following will result in the highest mechanical index? A high intensity and high frequency B low frequency and high signal amplitude C low intensity and low frequency D high frequency and low power ️B low frequency and high signal amplitude mechanical index is inver...

NCC C Question and answers verified to pass NCC C-EFM Study Guide Part 2 In the US, the paper speed on the monitor is set to: - correct answer 3 cm/min The ultrasound transducer on the EFM measures the: - correct answer mechanical movement of the fetal heart reflected off of sound waves What is the purpose of autocorrelation in the EFM? - correct answer to compare incoming waveforms for comparison (correlation) The area of maximum intensity of the FHR is usually the fetal: - co...

SPI Exam Review ultrasound imaging type in which pulses are reflected and used to produce a display ️️pulsed wave brightness of the dots on image ️️amplitude round-trip travel time per cm in soft tissue ️️13 microseconds A line produced on a display that represents ultrasonic echoes returning from the body. A sonographic image is composed of many such lines. ️️scan line Type of image presented in a rectangular format. - Each pulse travels in same direction - Different...

CEFM Practice Test Questions And Answers The paper speed used with EFM in North America is: a. 1cm/min b. 2cm/min c. 3cm/min - ANS 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 - ANS b. Mechanical movement of the fetal heart reflected off of sound waves The purpose of the autocorrelation in external monitoring is to ...

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 ...

Destructive vs constructive interference - ️️Constructive interference occurs when two waves overlap at the same location at the same point in time ( in phase) and the new combined wave has an amplitude greater than the original two waves. Destructive interference occurs when the waves are out-of-phase and the amplitude of the new wave is less than one of the original waves What is dynamic frequency tuning? - ️️A pulse from a transducer contains a wide range of frequencies (broad b...

URR mock exam 1 SPI Verified Answers ____ is defined as specific area or location where Doppler shift info is being obtained. A. spectral broadening B. nyquist limit C. sample volume D. spectral window C. sample volume Spatial resolution is: A. the minimum reflector separation required to produce separate echos. B. highest with linear phased arrays. C. the weakest reflected signal the transducer can receive D. another term for slice thickness resolution A. the minumum reflect...