SPI Study guides, Class notes & Summaries

SPI ARDMS EXAM |Q & A |ALREADY GRADED A+ |2024 UPDATE 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 attenuati...

SPI PRACTICE QUESTIONS & ANSWERS 2024 Sound waves are: - ANSWER-longitudinal, mechanical The speed of sound in soft tissue is closest to: - ANSWER-1,500 m/s The frequency closest to the lower limit of ultrasound is: - ANSWER-15,000 Hz Which is not an acoustic variable? - ANSWER-intensity The effects of soft tissue on ultrasound are called: - ANSWER-acoustic propagation properties All of the following are true EXCEPT: - ANSWER-two waves with identical frequencies must interfer...

SPI Exam Questions & Answers 2024 What is described as the ability of an object to resist compression and relates to the hardness of a medium? - ANSWER-stiffness An increase in PRF would lead to - ANSWER-an increase in DF what has the higher propagation speed? air, bone, soft tissue or water - ANSWER-bone what has a lower propagation speed? water, soft tissue, bone or lung tissue - ANSWER-lung tissue as imaging depth increases, the PRF must - ANSWER-decrease what law describe...

SPI Exam Review Questions & Answers 2024 ultrasound imaging type in which pulses are reflected and used to produce a display - ANSWER-pulsed wave brightness of the dots on image - ANSWER-amplitude round-trip travel time per cm in soft tissue - ANSWER-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. - ANSWER-scan line Type of image presented in a rectangular format. - Each ...

SPI exam questions & answers 2024 which of the following is determined by the frequency of the voltage applied to the ultrasound system - continuous wave -pulsed wave -color doppler -power doppler - ANSWER-continuous wave the formula used to determine velocity, what is divided by time? -distance -friction -inertia -hydrostatic pressure - ANSWER-distance low-resistance waveforms display a slow upstroke in -systole -diastole -pulsatile -phasic - ANSWER-systole can compr...

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SPI EXAM PREP QUESTIONS & ANSWERS 2024 What is a process that redirects the beam intensity? - ANSWER-Scattering For every 3 dB the intensity will what? - ANSWER-Double At what value does ultrasound begin? - ANSWER-Greater than 0.02 MHz Artifacts associated with axial resolution are the result of what? - ANSWER-Pulse length-Axial Resolution = Spatial Pulse Length. Which artifact is created through acoustic focusing of an ultrasound beam? - ANSWER-Enhancement Sound traveling th...

SPI exam review questions & answers 2024 When using a 3-6MHz transducer, which frequency will offer the best penetration? - ANSWER-3MHz Which transducer component improves lateral resolution? - ANSWER-pulser 3. Mirrors and lenses can be used to ________________. • A. improve sound transmission into the body • B. increase the PRF of the transducer • C. electronically focus the US beam • D. mechanically focus the US beam - ANSWER-D. mechanically focus the US beam 4. Wh...