Doppler spi - Study guides, Class notes & Summaries

Davies SPI REVIEW EXAM QUESTIONS & ANSWERS 2023/2024 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 ac...

Edelmen's SPI Exam Review Guaranteed Success What is the relationship between frequency and wavelength in ultrasound? ️️Frequency and wavelength are inversely related; as frequency increases, wavelength decreases, enhancing resolution but reducing penetration depth. How does acoustic impedance affect ultrasound imaging? ️️Acoustic impedance is the resistance to sound wave transmission; differences in impedance between tissues cause reflections that form the ultrasound imag...

ARDMS,SPI Exam Review (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A Q: What happens to axial resolution when spatial pulse length is decreased? Answer: improves Q: How much will a 3.5 MHz pulse be attenuated after passing through 2 cm of soft tissue? Answer: 3.5 dB Q: Propagation speed errors result in Answer: improper axial position Q: Enhancement is caused by Answer: weakly attenuating structures ...

SPI 2025 Guaranteed A+ What is the effect of decreasing the transducer frequency on image quality? ️️Decreasing the transducer frequency improves penetration depth but reduces image resolution, making it better for imaging deeper structures. How does beam width impact lateral resolution? ️️Narrower beam width improves lateral resolution by providing clearer detail of structures located side by side. What causes acoustic shadowing, and how does it appear on an ultrasound ima...

SPI exam questions & answers 2024 which of the following is determined by the frequency of the voltage applied to the ultrasound system - continuous wave -pulsed wave -color doppler -power doppler - ANSWER-continuous wave the formula used to determine velocity, what is divided by time? -distance -friction -inertia -hydrostatic pressure - ANSWER-distance low-resistance waveforms display a slow upstroke in -systole -diastole -pulsatile -phasic - ANSWER-systole can compr...

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 Practice (ARDMS A & B) |Q & A |ALREADY GRADED A+ |2024 UPDATE C - Answer What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A - Answer to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B - Answer which imaging mode requires a broadband ...

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...

SPI Exam | Questions and Correct Answers | Latest Update 2024/2025 All of the following are AIUM recommendations regarding the use of ultrasound, except: A. Always adhere to the ALARA principle when scanning B. Limit the examination time to the shortest time necessary to complete a diagnostic exam C. In order to limit ultrasound intensity, always use PW Doppler instead of M-mode to evaluate the fetal heart D. Limit ultrasound exposure to patients that require an examination for a spec...

SPI Practice (ARDMS A & B) | QUESTIONS & ANSWERS | ALREADY GRADED A+ | 2024 UPDATE C - Answer What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A - Answer to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B - Answer which imaging mode requ...