Mechanical transducer Study guides, Class notes & Summaries

what improves temporal resolution -answer- low line density, high frame rate, narrow sector line, fewer pulse per frame which of the following is true when the dynamic aperature is increased -answer- near zone length increases Which of the following is the standard protocol for digital imaging that allows compatibility and communication between computers, workstations, and network hardware provided by various manufacturers of CT, MRI, and ultrasound -answer- DICOM the beam of an unfocus...

Provides a measure of the maximum potential damage associated with an occurrence - Answer- exposure ________________ is an essential goal for all public entities - Answer- continuity of operations An organization must meet the standard of care that it owes to others in order to ensure that... - Answer- legal obligations are satisfied What are the five steps of the risk management process? - Answer- - scan environment - identify risk - analyze risk - treat risk - monitor and review ...

Color Doppler demonstrates (x2) - average velocity & direction of flow Which artifacts will be seen with needles? (x3) - - Propagation speed artifact - Reverberation AKA resonance artifact - Bayonet artifact What happens if you decrease the color threshold? - reduce the color displayed - color threshold AKA priority - increase threshold if you don't see enough color If the entire image is too bright, what do you do first? - decrease the output power reverberation artifact due to gas pro...

Which of the following adjustments will change the image data that will be stored in the memory of the ultrasound system? A) Both pre-processing and post-processing B) Post-processing C) Changing monitor contrast settings at the beginning of the exam. D) Pre-Processing - Pre-processing-is performed as the image is "live" or in real time, before it has been stored to memory. Which measurement of beam intensity is used to describe levels of intensity associated with US bioeffects? A) Sp...

When applying to write a Power Engineer certificate of competency examination, the candidate must: Select one: a. Undergo mandatory drug testing b. Hold the next lower class of qualification c. Pass a criminal records check d. Pass both a written and oral examination - Answer-b. Hold the next lower class of qualification A machine lifts a load of 12kN with an applied effort of 4kN. What distance will the load move if the effort moves a distance of 8m and the efficiency of the machine is 7...

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

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 attenuating structures wavele...

Imaging a superficial mass, you adjust controls to optimize spatial resolution. What does spatial resolution consist of? - correct answer Lateral and axial resolution Which of the following does not display a sector format? - correct answer Linear-sequenced array Axial Resolution is equal to - correct answer spatial pulse length divided by 2 Resolution of of two structures at different depths along the path of the sound beam is termed: - correct answer Axial resolution Which of the f...

ARDMS SPI Exam (2024) || All Questions & Answers (Graded A+) ARDMS SPI Exam (2024) || All Questions & Answers (Graded A+) The range of frequencies produced by a damped PZT element is called: a. fundamental frequencies b. Q Factor c. near field d. bandwith - ANSWER - d. bandwidth The percentage of time that the ultrasound instrument is emitting ultrasound is called: a. PRF b. pulse duration c. pulse repetition period d. duty factor - ANSWER - d. duty factor; the maximum value is ...

ARDMS SPI Exam |Complete Questions with Correct Answers Graded A+ When the direction of the wave propagation is parallel to the particle motion of the medium, the wave being transmitted is called a: A) surface wave. B) longitudinal wave. C) transverse wave. D) non-linear sound. B) longitudinal wave If the sound beam attenuated 6 dB, what will happen to the overall intensity? A) Quadrupled B) Doubled C) Halved D) Quartered D) Quartered Frequency increased from 3 MHz to 6 MHz,...