Mechanical transducer Study guides, Class notes & Summaries

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...

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...

what is a transducer? - Answer- anything that converts one form of energy to another form of energy what does an ultrasound transducer do? - Answer- converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? - Answer- if a crystal is heated beyond the curie point (360 degrees for PZT) the crystal can lose piezoelectric effects what material is traditionally used for ultrasound trasnducers? - Answer- Lead ziconate titanate...

SPI Ultrasound Physics Review Exam - Questions and Answers Relates to likelihood of harmful bio effects from cavitation Mechanical index Predicts maximum temperature increase Thermal index Measures output intensity of the beam Hydrophone Region of increased brightness due to higher intensities in focal zone Focal banding Occurs when sound travels through a medium with a lower attenuation rate than the surrounding tissue Enhancement Beam travels through an area of high attenuation Shadowing Bea...

ARDMS practice Test 100 Questions with Verified Answers Sonographers should be aware of work-related musculoskeletal disorders. Best practice while scanning is to avoid abducting the arm more than how many degrees? a. 50 b. 90 c. 30 d. 40 - CORRECT ANSWER c. 30 Which action demonstrates best practice during ultrasound exams regarding the ALARA principle? a. The exposure time should be extended during the exam. b. use the lowest possible output power that provides a diagnostic image. ...

CWB 2 Module 19 QuestionsThe upper limit of human hearing is approximately: A) 20Hz B) 20kHz C) 20MHZ - correct answer B) 20kHz A typical frequency used for ultrasonic testing of welds is: A) 2.25MHZ B) 2.25kHz C) 2.25Hz - correct answer A) 2.25MHZ Do transverse waves in a solid travel faster or slower than longitudinal waves? - correct answer Slower True or False? The energy carried by a wave is proportional to the square of the amplitude. - correct answer True The decr...

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...

The paper speed used with EFM in North America is: a. 1cm/min b. 2cm/min c. 3cm/min - Answer 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 - Answer 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 compariso...

SPI MOCK EXAM QUESTIONS & ANSWERS 2023/2024 A transducer with which frequency would have the thickest element(s)? 2 MHz 3.5 MHz 5 MHz 7.5 MHz - ANSWER-7.5 MHz An ultrasound transducer converts: Electrical energy into light and heat Electrical energy into mechanical energy Mechanical energy into radiation Sound into ultrasound - ANSWER-Electrical energy into mechanical energy Which of the following can be changed by the operator? Frequency Wavelength Propagation speed Pulse r...

Sonographers should be aware of work-related musculoskeletal disorders. Best practice while scanning is to avoid abducting the arm more than how many degrees? a. 50 b. 90 c. 30 d. 40 - Answer- c. 30 Which action demonstrates best practice during ultrasound exams regarding the ALARA principle? a. The exposure time should be extended during the exam. b. use the lowest possible output power that provides a diagnostic image. c. use the lowest possible gain. d. Ensure that the time gain ...