Ardms Spi Exam (Latest 2023/ 2024 Update) Questions And Verified Answers| 100% Correct| Grade A

The primary cause of attenuation of ultrasound in soft tissue is caused by: {Ans: absorption}The Doppler wall filter is considered a: {Ans: high pass filter}The average speed of sound in soft tissue is: {Ans: 1540m/s; 1.54km/s; 1.54mm/us}Which of the following is considered the memory of an ultrasound instrument? a. pulser b. transducer c. receiver d. beam former e. digital scan converter f. display monitor {Ans: e. digital scan converter}The unit for impedance? {Ans: Rayls}Damping does not decrease: {Ans: bandwidth}A mechanical transducer utilizes: a. transmit focus b. receive focus c. fixed focus d. dynamic aperture focusing {Ans: c. fixed focus; sonographer cannot determine the location of # of foci. mechanical transducer uses cross sectional imaging, rotating wheel, wobbler, oscillating mirror}The best way to increase the near field length of an ultrasound beam is to: {Ans: increase transducer diameter}Which instrument control affects the amplitude (dB) of the outgoing signal: a. gain b. receiver gain c. TGC d. transmit gain e. overall gain {Ans: d. transmit gain; amplitude can be affected by the sonographer}The transducer frequency is primarily determined by the transducer element: a. diameter b. thickness c. propagation speed d. type {Ans: