SPI exam 3| 91 questions| with complete solutions

No known effect CORRECT ANSWERS: The confirmed bio effects on pregnant women with use of real-time diagnostic instruments is: Low-frequency, high-intensity CORRECT ANSWERS: Which of the following combinations of frequency and intensity would most likely result in cavitation? Continuous wave CORRECT ANSWERS: Which of the following mold requires two crystals: one for transmitting and one for receiving? Bandwidth CORRECT ANSWERS: The range of frequencies contained in the Pulse ARE CALLED: Unitless CORRECT ANSWERS: Quality factor is A fluid filled mass CORRECT ANSWERS: Which of the following would be most likely to cause acoustic enhancement? Depth gain compensation CORRECT ANSWERS: Which control is used to minimize the affects of attenuation? Refraction, propagation speed CORRECT ANSWERS: When an BEAM PASSES OPEN WEEKLY ACROSS THE BOUNDARY BETWEEN TWO MATERIALS,____WILL OCCUR IF THERE IS A DIFFERENCE IN_______IN THE TWO MATERIALS Improved axial resolution CORRECT ANSWERS: A numerically decrease SPL leads to: Crystal thickness CORRECT ANSWERS: The frequency of the transducer depends primarily on: Refraction CORRECT ANSWERS: A sound beam that strikes the surface that normal incidence will not experience: 90° CORRECT ANSWERS: The Doppler shift is zero when the angle between the receiver and Transducer and the flow direction is To close to CORRECT ANSWERS: When scanning through a large area of tissue that has a propagation speed of 3000 m/s, current diagnostic scanners will display a reflector at a location_______the transducer 17 dB CORRECT ANSWERS: If the gain of an amplifier is 20 dB, what will the new gain setting be if the intensity is reduced by one half? Highest at focal zone CORRECT ANSWERS: The intensity of an ultrasound beam is generally False CORRECT ANSWERS: Plugflow is found distal to a larg