Mechanical transducer - Study guides, Class notes & Summaries

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 ...

Frequencies used in transthoracic imaging are usually in the range of ____________. Frequencies used in transesophageal imaging are usually in the range of ______________. A) 3-6 MHz;6-8 MHz B) 3-6 MHz; 5-7 MHz C) 2.5-4 MHz; 5-7 MHz D) 1-3 MHz; 6-8 MHz - 2.5-4 MHz; 5-7 MHz Which of the following will aid in visualization of the endocardium? A) Increased transducer frequency B) Larger sector size C) Increased wall filter D) Agitated saline contrast - Increased transducer frequency-this ...

SPL wavelength x # of cycles With phased array transducers, the transmitted sound beam is steered by Varying the timing of pulses to the individual piezoelectric elements What type of wave is sound? mechanical and longitudinal The Frequency ranges for Ultrasound are: > 20,000 Hz (20kHz) The speed of sound in soft tissue is: 1540 m/s Linear sequence Array Master01 |Excellent Study Material| Latest update 1 | P a g e | © copyright Master01| Grade A+ transducer that fires the...

CEFM Practice Test| Answered 100% Correctly| Updated 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 i...

The layer of material within the transducer which has an intermediate impedance between the transducer element and the human tissue in known as the: - ️️matching layer Huygen's Principle - ️️states that waves are the result of the interference of many wavelets produced at the face of the transducer What happened to intensity if the amplitude of a signal is halve? - ️️Quarted/ Intensity is proportional to the amplitude squared, so if the amplitude is halved, the resulting in...

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 ...

Which artifact may cause structures to look deeper than they actually are? A. Side lobe B. Shadowing C. Refraction D. Propagation speed error E. Slice thickness -Correct Answer D. propagation speed error The optimum operating frequency for a broad-bandwidth transducer would be: A. 6 MHz B. 7 MHz C. 8 MHz D. 9 MHz E. 10 MHz -Correct Answer C. 8 In breast sonography, which of the following is NOT significantly affected by the limited field of view when imaging superficia...

ASVAB MEPS Exam 223 Questions with Verified Answers A radar is designed to report the track of an aircraft every second. If this radar reports 30 tracks in one minute, what percentage of the time did the radar track the aircraft? - CORRECT ANSWER 50% Jerry walked a dog from 6:40 a.m. to 7:30 a.m. one day. If he was paid at the rate of $6 per hour, how much did he earn that day? - CORRECT ANSWER $5.00 A woman is looking for a bigger square office. She finds an office twice the area of he...

The doppler shift is 5000 Hz. The pulse repetition frequency is 9000 Hz. Which of the following is true? A. peak pressure gradient is 36mmHg B. range ambiguity will occur C. aliasing will occur D. the peak velocity is equal to 2 m/s - ️️C. aliasing will occur When evaluating a suspected arterial stenosis, a doppler angel of ____ degrees will produce the most accurate flow velocity. A. 0 B. 30 C. 60 D. 90 - ️️A. 0 Spatial resolution is: A. the minimum reflector separation req...

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...