Spi ultrasound - Study guides, Class notes & Summaries

ARDMS SPI Exam Questions & Answers 2024 Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain - ANSWER-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 - ANSWER-e. digital scan converter Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transducer d. flow toward...

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 STUDY GUIDE (Ultrasound Physics Certification Test Study |QUESTIONS & ANSWERS |VERIFIED & UPDATED | 2024 In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... - Answer Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? - Answer 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in - Answer Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth ...

When will the Doppler shift be the highest? A.when the beam is parallel to the direction of flow B.when the beam is at a 45 degree angle to flow C.when the beam is perpendicular to the direction of flow D. Doppler shift is unrelated to beam angle Correct Answer: A.when the beam is parallel to the direction of flow Which of the following best describes the principles of hemodynamics? -The pressure difference required for blood to flow -The pressure created in a fluid system -A fluid's...

SPL wavelength x # of cycles With phased array transducers, the transmitted sound beam is steered by Varying the timing of pulses to the individual piezoelectric elements What type of wave is sound? mechanical and longitudinal The Frequency ranges for Ultrasound are: > 20,000 Hz (20kHz) The speed of sound in soft tissue is: 1540 m/s Linear sequence Array Master01 |Excellent Study Material| Latest update 1 | P a g e | © copyright Master01| Grade A+ transducer that fires the...

The layer of material within the transducer which has an intermediate impedance between the transducer element and the human tissue in known as the: - ️️matching layer Huygen's Principle - ️️states that waves are the result of the interference of many wavelets produced at the face of the transducer What happened to intensity if the amplitude of a signal is halve? - ️️Quarted/ Intensity is proportional to the amplitude squared, so if the amplitude is halved, the resulting in...

SPL - ANSWER wavelength x # of cycles With phased array transducers, the transmitted sound beam is steered by - ANSWER Varying the timing of pulses to the individual piezoelectric elements What type of wave is sound? - ANSWER mechanical and longitudinal The Frequency ranges for Ultrasound are: - ANSWER > 20,000 Hz (20kHz) The speed of sound in soft tissue is: - ANSWER 1540 m/s

SPI Ultrasound Physics Review Exam - Questions and Answers Relates to likelihood of harmful bio effects from cavitation Mechanical index Predicts maximum temperature increase Thermal index Measures output intensity of the beam Hydrophone Region of increased brightness due to higher intensities in focal zone Focal banding Occurs when sound travels through a medium with a lower attenuation rate than the surrounding tissue Enhancement Beam travels through an area of high attenuation Shadowing Bea...

SPI ULTRASOUND PHYSICS REVIEW