Specular reflectors - Study guides, Class notes & Summaries

ARDMS SPI STUDY GUIDE QUESTIONS AND ANSWERS ALREADY PASSED In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is the length of time it takes for one complete wavelength to pass a fixed poin...

What will happen to the patients body is HE/SHE is in shock? - ️️drop in blood pressure decreased respiration tachycardia chest pain loss of mental alertness What describes the distance from the beginning of a cycle to the end of that cycle? - ️️wavelength What are the three primary acoustic variables? - ️️pressure, density, distance(particle motion) What is the multipath artifact? - ️️artifact caused by the sound beam bouncing off several different reflectors What is...

ARDMS SPI 500 Exam – With Questions & Answers (Rated A+) ARDMS SPI 500 Exam – With Questions & Answers (Rated A+) Reflectors that reflect ultrasound energy equally in all directions are called - ANSWER - Rayleigh The best example of a scatter reflector is (the) - ANSWER - organ parenchyma The best example of of a Rayleigh scatter is the - ANSWER - red blood cell The ultrasound beam strikes an interface at 90 degrees. The incidence is considered - ANSWER - perpendicular Th...

What is enhancement caused by? - ANS weakly attenuating structures What is the multipath artifact? - ANS artifact caused by the sound beam bouncing off several different reflectors What is the typical value of PRF in diagnostic ultrasound? - ANS 1000-10,000 Hz or 1-10 KHz What are specular reflections? - ANS reflections that occur when the sound impinges upon a large, smooth reflector at a 90 degree angle. What are non-specular reflections? - ANS ...

SPI ARDMS EXAM LATEST REAL EXAM A $ B QUESTIONS AND CORRECT ANSWERS |AGRADE What angle of insonation to blood flow produces the maximum doppler shift? A. 180 B. 150 C. 90 D. 45 - D. 45 Which scenario will produce no doppler shift to the receiver? A. Source and receiver moving at the same speed and direction B. Source moving backward toward the receiver C. Source moving away from receiver D. Receiver moving toward source - A. Source and receiver moving at the same speed an...

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,...

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,...

ARDMS SPI 500 Questions and Answers A sound wave is mechanical, longitudinal A compression area of a sound wave is high pressure, high density A rarefaction area of a sound wave is low pressure, low density Which is considered an acoustic variable pressure Which is a unit for pressure N/m2 Which is a unit for density lbs/cm3 Which wave propagates in a medium sound The range for ultrasound is greater than 20KHz ____ is the number o...

ARDMS SPI EXAM STUDY GUIDE 180 Questions with Verified Answers In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... - CORRECT ANSWER Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? - CORRECT ANSWER 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in - CORRECT ANSWER Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is t...

SPI ULTRASOUND REGISTRY REVIEW QUESTIONS AND ANSWERS GRADED A 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 transducer that fires the elements in groups Unit for Wavelength is mill...