SPI TESTS BUNDLE

All numerical values should have corresponding _____. CORRECT ANSWERS: units An ______ tool can be used to measure area CORRECT ANSWERS: ellipse _________ is not a unit. CORRECT ANSWERS: Percent Giga CORRECT ANSWERS: billion 10^9 G micro CORRECT ANSWERS: millionth 10^-6 How ma...

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 fam...

Which of the following helps to improve the elevation resolution to B- mode image? correct answers Focusing with and acoustic lens During and exam, you encounter all of the interactions of ultrasound and tissue listed. Which one will NOT cause redirection of part of the ultrasound energy? c...

This converter converts the numbers stored in memory to proportional voltages that control the brightness on a CRT monitor CORRECT ANSWERS: Digital to Analog Converter The Digital Scan Converter is AKA: CORRECT ANSWERS: Image Memory This is where images are stored in the ultrasound system: ...

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 ...

Will not cause a redirection of part of the ultrasound energy CORRECT ANSWERS: absorption You are scanning a large mass composed primarily of fat. What will you most likely encounter? CORRECT ANSWERS: axial misregistration of object distal to the mass on the screen due to the slower propagation...

Interference patterns of reflected waves causes? CORRECT ANSWERS: acoustic speckle which of the following terms denotes the time it takes for one cycle to occur? CORRECT ANSWERS: Period which of the following increases as frequency increases? CORRECT ANSWERS: absorption scattering attenua...

You have increased the transmit power while performing a pelvic ultrasound examination. This action increases which of the following? A. Penetration B. Acoustic power C. Image brightness D. Voltage applied to the transducer elements E. All of the above CORRECT ANSWERS: E. All of the abo...

In order for distance measurements to be accurate in an ultrasound tissue phantom, the phantom sound propagation speed must be: A: 13 us/cm B: 1.54 m/s C: 154o m/s D: 1/2 the speed of sound in tissue E: Twice the speed of sound in soft tissue CORRECT ANSWERS: C: 1540 m/s You expanded t...

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 fam...

This image was obtained with a linear array transducer. The trapezoidal field of view increases the field of view. How is the trapezoidal shape created? See image for question #244 A. Electronic beam steering B. Side lobes C. Grating lobes D. Mechanically steering the elements E. Mirror...

While performing a Doppler ultrasound examination you adjust the pulse repetition frequency to 12 kilohertz this can also be expressed as CORRECT ANSWERS: 12,000 Hz When you change the transmit frequency which of the following is altered CORRECT ANSWERS: Number of cycles per second Relative ...

The half intensity depth for a 2MHz transducer in soft tissue is CORRECT ANSWERS: 3cm Attenuation is lowest in which of the following mediums CORRECT ANSWERS: water Increasing frequency will result in all the following except CORRECT ANSWERS: a. range resolution improvement b. transverse r...

Attenuation CORRECT ANSWERS: Its the decrease in intensity, power and amplitude and the sound wave travels through a medium. Is attenuation related to the propagation speed? CORRECT ANSWERS: NO! because although the sound wave in becoming weaker it is still traveling in the same medium therefor...