SPI Study guides, Class notes & Summaries

Which artifact is illustrated by this image? - correct answer a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? - correct answer a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? - correct answer a) Deny performance of the exam until a written request is received b) Seek approval from supervisor c) Verbally r...

Which parameter is most likely to affect spatial resolution?A.dynamic range B.beam width C.system sensitivity D.depth of visualization - correct answer D.depth of visualization When using a 5MHZ transducer, in which tissue is the ultrasound wavelength shortest? A.fat B.blood C.bone D.muscle - correct answer A.fat What affects the beam width in the near field? A.Pulse repetition frequency B.Pulse duration C.Frame rate D.Transducer aperture - correct answer D.Transducer aperture ...

Reducing the likelihood of bioeffects from acoustic energy is the mission of the: A. Nyquist limit B. Reynolds number C. Huygens principle D. ALARA principle E. Poiseuille principle - correct answer D. ALARA principle The number of cycles in a pulse directly related to the: A. Duty factor B. SPL C. operating frequency D. PRF E. propagation speed of the medium - correct answer B. SPL The Doppler shift frequency is proportional to the: A. Cosine values B. Doppler a...

Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - correct answer d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - correct answer d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and increases penetration c. causes poor...

Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain - a. transmit 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 - e. digital scan converter Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transducer d. flow towards the transducer - b. turbulent flow With pulse wave Dop...

When the ELASTICITY of a medium is HIGH, the _____ is HIGH - stiffness - prop. speed - compressibility - reflectivity - correct answer compressibility What term describes the # of cycles that an acoustic variable completes in a second? - period - freq. - PRP - variable rate - correct answer freq. What happens to venous flow return to the HEART when a person INHALES? - correct answer increases What establishes the freq. of an US wave? - transducer - medium throug...

When the ELASTICITY of a medium is HIGH, the _____ is HIGH - stiffness - prop. speed - compressibility - reflectivity - compressibility What term describes the # of cycles that an acoustic variable completes in a second? - period - freq. - PRP - variable rate - freq

ultrasound imaging type in which pulses are reflected and used to produce a display - pulsed wave brightness of the dots on image - amplitude round-trip travel time per cm in soft tissue - 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. - scan line Type of image presented in a rectangular format. - Each pulse travels in same direction - Different starting point for each pulse

Edelmen's SPI Exam Review with complete solution / Latest updated .

SPI Review with complete solution / Latest updated .