SPI Exam Prep Guide | Full Practice Questions and Detailed Solutions | ARDMS Certified | 100% Correct | Latest Edition

SPI Exam Prep Guide | Full Practice Questions and Detailed Solutions | ARDMS Certified | 100% Correct | Latest Edition 1. Which angle of insonation to blood flow produces the maximum doppler shift: 180, 150, 90, 45 degrees - ANSWER 180 (same as zero) 2. Which type of interaction between sound and tissue is most affected by the thermal index? - ANSWER absorption 3. What is the Nyquist limit if a pulsed-wave doppler instrument has a pulse repetition frequency of 16 kHz? - ANSWER 8 kHz 4. Which action can improve resolution of a displayed image? - ANSWER increasing the transducer frequency 5. Which factor determines the displayed depth of a reflector? - ANSWER PRF 6. Which of the following anatomical structures exhibits the lowest level of attenuation? Rib Sternocleidomastoid muscle Bowel Distended bladder - ANSWER Distended bladder 7. What is the average speed of sound in soft tissue? - ANSWER 1540 m/s 8. In the following diagram, what does the letter (A) represent? - ANSWER Wavelength 9. Which of the following is NOT identifiable in the image: Presence of flow Flow velocity Peak velocity Direction of flow - ANSWER peak velocity 10. Which transducer component is bonded to the back of the transducer's active element? - ANSWER damping material 11. Which type of ultrasound transducer creates this displayed image shape? - ANSWER Curvilinear 12. If the depth of a reflector is 5 centimeters in soft tissue, what is the time of flight? 130 milliseconds 65 microseconds 13 microseconds 65 milliseconds - ANSWER 65 microseconds 13. What image artifact is present in this image, identified by the red arrow? - ANSWER Posterior enhancement 14. Which function of the receiver has the capability to produce an image that is uniformly bright from top to bottom?* - ANSWER compensation 15. The knobology function, which is circled in red, is the _______ and its purpose it to ________.* a) Focus, improve axial resolution b) Caliper, let the sonographer know an organ's dimensions c) Focus, improve lateral resolution d) Depth marker, let the sonographer know the depth of penetration - ANSWER Focus, improve lateral resolution 16. A sonographer is performing a renal artery Doppler examination and implements spectral Doppler for measurement of the renal artery's peak systolic velocity. With regard to bioeffects, how does this affect the thermal index? - ANSWER Thermal index increases. 17. The knobology function circled in this image compensates for which of the following? - ANSWER Attenuation 18. A sonographer is assisting with a core needle biopsy. During a biopsy pass, reflections are created at increasing depths, deep to the core biopsy needle. These reflections refer to an artifact called: - ANSWER Reverberation 19. Sound is redirected in a single, uniform direction when it encounters which type of reflector? - ANSWER Specular 20. A sonographer performing an abdominal ultrasound narrows the sector width. Which of the following is affected? - ANSWER Temporal resolution increases 21. Sonographers should be aware of work-related musculoskeletal disorders. Best practice while scanning is to avoid abducting the arm more than how many degrees? - ANSWER 30 22. Which action demonstrates best practice during ultrasound exams regarding the ALARA principle? A. The exposure time should be extended during the exam. b. Use the lowest possible output power that provides a diagnostic image. c. Use the lowest possible gain. d. Ensure that the time gain compensation (TGC) is within acceptable limits. - ANSWER b. Use the lowest possible output power that provides a diagnostic image. 23. Which type of cavitation is the MOST concerning cause of bioeffects? a. Transient b. Absorption c. Stable d. Thermal - ANSWER a.Transient 24. Assuming an unfocused ultrasound beam, the American Institute of Ultrasound in Medicine's "Statement on Mammalian Biological Effects of Ultrasound In Vivo" has confirmed that no bioeffects have been noted when the spatial pulse temporal average (SPTA) intensity is less than? - ANSWER 100 mW/cm² 25. A sonographer notices that the mechanical index (MI) is too high during an ultrasound. What would be the MOST appropriate modification that the sonographer can make? - ANSWER Decrease the output power. 26. Select the technique that will generate the LEAST amount of exposure to the patient. a. Spectral Doppler b. Color flow Doppler c. Grayscale d. M-mode - ANSWER c. Grayscale 27. When a vibrating string or fluid pump is used to test system performance, what parameter is being tested? - ANSWER Doppler velocities 28. A tissue-equivalent phantom is used to ensure the efficiency of the ultrasound machine. Choose the resolution that is NOT tested with this phantom. Temporal Contrast Axial Horizontal - ANSWER temporal 29. Which performance check describes the ability of the ultrasound machine to correctly visualize signals that are weaker than others? - ANSWER Sensitivity 30. What is the name of the recent technological advancement that is used on tissues such as the liver, breast, prostate, and thyroid to assess the stiffness of tissue or to better assess lesions? - ANSWER Elastography 31. Which choice is NOT a true statement regarding this filling defect within the gallbladder? The filling defect displays a significant amount of attenuation. It has created an enhancement artifact. It has created a shadowing artifact. Regions deeper than the filling defect are obscured. - ANSWER It has created an enhancement artifact 32. Which type of artifact appears echogenic and stems from gas bubbles as they vibrate due to the interaction with the ultrasound beam? - ANSWER ring down artifact 33. What is the fundamental reason that the power and intensity of the ultrasound beam diminish as it travels through tissue? - ANSWER Absorption 34. Select the modification that the sonographer can make to decrease the amount of attenuation as the ultrasound beam travels through tissues Increase the imaging depth. Increase the frequency of the transducer. Decrease the output power. Decrease the frequency of the transducer. - ANSWER Decrease the frequency of the transducer. 35. Choose the ultrasound system function that enables the sonographer to adapt to the amount of attenuation that occurs with increasing depth. Focusing Receiver gain TGC Output power - ANSWER TGC 36. Assume that a sound beam is traveling in soft tissue. Calculate the attenuation coefficient if the frequency is 12 MHz. - ANSWER 6dB