Far zone beam divergence - 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...

Ultrasound waves that are traveling through a medium consist of a. electromagnetic and radio frequencies b. compressions and refractions c. electromagnetic and ionizing frequencies d. compressions and rarefactions - ️️d. What is the difference between audible sound and ultrasound? a. audible sound waves can travel through a vacuum b. audible sound has a higher frequency c. ultrasound has a higher frequency d. ultrasound waves are ionizing - ️️c. Damping in a transducer a. redu...

Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - 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 axial and lateral resolution ...

SPI Practice Test Questions With 100% Correct Answers Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - ANS-d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - ANS-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 ...

Davies SPI REVIEW Already Rated A+ What action below would be most in keeping with the ALARA principle while performing a diagnostic ultrasound examination? A: Allow multiple students to scan an obstetrical patient because the fetus is in a good position for imaging. B: Prolong the sonogram to make videos of the fetus for each family member. C: Complete the diagnostic scan in a timely fashion at the lowest output power that achieves a quality image. D: Maximize the acoustic outpu...

SPI Practice Test Questions And Answers Graded 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...

SPI Practice Test Questions & Answers 2024 Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - ANSWER-d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - 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 incre...

The direction of the Doppler shift determines: A. the peak velocity of the flow B. the color Doppler hue C. the average velocity of the flow D. the color Doppler luminance -answer- B. the color Doppler hue Color Hue - perceived color used to demonstrate direction (red and blue or positive and negative shift) What is the primary factor that determines the resistance characteristics of the arterial signal displayed by PW Doppler? A. vessel course and location B. branch number C. part it...

SPI Practice Test Graded A+ Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution ️d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing ️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...

ARDMS SPI PRACTICE TEST NEW 2023-2024 ALL DONE SOLUTION Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing 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 penetr...