Exam (elaborations)
radt 435 exam 2 with correct answers
- Module
- Institution
radt 435 exam 2 with correct answers
[Show more]
Seller
Follow
millyphilip
Reviews received
Content preview
radt 435 exam 2 with correct answers2 possible explanations for why variance would be outside the accepted limit for
REPRODUCIBILITY - Answer -1. vaporization: if tungsten if vaporized and deposited on
the glass envelope of the tube, it will increase the attenuation of the beam which can
cause inaccurate exposures
2. timer failure: although the timer is consistent for all exposures, if there is a timer
failure, some exposures could have lasted longer or shorter than preselected. This
would result in different # of photons which ultimately results in inconsistent mR
3 recommendations to give to a first year student to reduce patient exposure? - Answer
-1. high kVp , low mAs
2. Filtration
3. Collimation
The exposure time accuracy should be checked:
A. monthly
B. bimonthly
C. semiannually
D. annually - Answer -d. annually
half wave rectified x-ray systems may contain:
A. zero diodes
B. one diode
C. two diodes
D. all of the above are possible - Answer -d. all of the above are possible
X-ray system mAs reciprocity has an acceptance parameter of
A. 2%
B. 5%
C. 10%
D. 15%
E. 20% - Answer -c. 10%
A synchronous spinning top is used on a three-phase unit with a time of 17ms.
Approximately how large of an arc shoudl appear if the timer circuit is accurate?
A. 3°
B. 6°
C. 17°
, D. 36° - Answer -b. 6 degrees
time (s) = arc size / 360 degrees
The difference in the waveform between the primary and secondary sides of the high
voltage transformer is:
A. frequency
B. velocity
C. amplitude
D. all of the above - Answer -C. amplitude
Voltage across the x-ray tube is most constant with _____.
A. high frequency generators
B. single phase, half wave
C. single phase, full wave
D. three phase, full wave - Answer -a. high frequency generators
The ____ circuit provides electrons for the x-ray tube current
A. rectifier
B. autotransformer
C. high voltage
D. filament - Answer -D. filament
The variability allowed for milliampere and time linearity is +/- ____%
A. 2
B. 5
C. 10
D. 20 - Answer -C. 10
The half value layer (HVL) of an x-ray beam is a measurement of beam ______.
A. intensity
B. quality
C. quantity
D. all of the above - Answer -b. quality
Which of the following should a quality control program for radiographic equipment
include:
1. visual inspection
2. environmental inspection
3. performance testing - Answer -all of the above
Half wave rectified, three phase units provide an x-ray beam at _______ pulses per
second
A. 1
B. 60
C. 120
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller millyphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.34. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78075 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now