Davies Ultrasound Physics Review Questions And Answers | Verified
1. *** What action would be most in keeping w the Complete the diagnostic
scan in a
ALARA principle while performing a timely fashion at the lowest output
diagnostic ultrasound exam? power that achieves a quality
image
Advocating use of the ALARA prin-
ciple (as low as reasonably
achiev- able) prudently
minimizes the risk of bio ettects
(even tho epidemiological
studies have revealed no known
risk associated w the use of
2. ***During performance of an obstetric
diagnostic ultrasound)
ultra- sound exam, you adjust the system
parameters to improve the image. Which increased temperal resolution
of the following parameters would increased lateral resolution
increase acoustic exposure? increased axial resolutionlution
3. ***During performance of an obstetric
ultra- sound exam, you adjust the system
Increase transmit power
parameters to improve the image. Which
of the following parameters would The transmit power is the only con-
increase acoustic exposure? trol listed that will attect the
expo- sure of the patient to
acoustic power. Gain, TGC and
frame averaging (per- sistence)
do not attect sound trans-
mission and therefore do not
attect exposure. Increasing freq
will not in- crease exposure
1/
1
1. *** What action would be most in keeping w the Complete the diagnostic
scan in a
ALARA principle while performing a timely fashion at the lowest output
diagnostic ultrasound exam? power that achieves a quality
image
Advocating use of the ALARA prin-
ciple (as low as reasonably
achiev- able) prudently
minimizes the risk of bio ettects
(even tho epidemiological
studies have revealed no known
risk associated w the use of
2. ***During performance of an obstetric
diagnostic ultrasound)
ultra- sound exam, you adjust the system
parameters to improve the image. Which increased temperal resolution
of the following parameters would increased lateral resolution
increase acoustic exposure? increased axial resolutionlution
3. ***During performance of an obstetric
ultra- sound exam, you adjust the system
Increase transmit power
parameters to improve the image. Which
of the following parameters would The transmit power is the only con-
increase acoustic exposure? trol listed that will attect the
expo- sure of the patient to
acoustic power. Gain, TGC and
frame averaging (per- sistence)
do not attect sound trans-
mission and therefore do not
attect exposure. Increasing freq
will not in- crease exposure
1/
1
