Exam (elaborations)
RAD 370 Quality Assurance- Questions & Answers
- Course
- Institution
RAD 370 Quality Assurance- Questions & Answers
[Show more]
Content preview
RAD 370 Quality Assurance- Questions& Answers
Annual X-ray symmetry change from baseline Correct Ans-+-1%
IMRT
Annual electron flatness change from baseline Correct Ans-1%
Annual electron symmetry change from baseline Correct Ans-+-1%
Annual xray/electron output calibration Correct Ans-+-1%
IMRT
Annual X-ray beam quality PDD TMR energy Correct Ans-+-1% from baseline
Xray MU linearity annual Correct Ans-Even dose
+-2% >5 MU NON
+-5% 2-4 MU IMRT and SRS
Annual collimator rotation isocenter Correct Ans-+-1 mm from baseline
IMRT
Annual electron applicator locks Correct Ans-Functional
Annually coincidence of radiation and mechanical isocenter Correct Ans-+-2mm from
baseline NON AND IMRT
+-1mm from baseline
,Annual tabletop sag Correct Ans-2 mm from baseline
Annual table angle Correct Ans-1 degree
Annual manufacture test procedures Correct Ans-Functional
Annual beam energy constancy Correct Ans-2%
Annual calibration of surrogate for respiratory phase/amplitude Correct Ans-100 ms of
expected
Annual interlock testing Correct Ans-Functional
Brachytherapy
Room safety door interlocks, lights, and alarms Correct Ans-Functional
Brachytherapy
Console functions Correct Ans-Functional
Simulator Correct Ans-Difference in energy from linear accelerator
Today we use CT
To determine what treatment fields were going to look like
____% of patients recieved rad therapy Correct Ans-60
Radiation therapy cures Correct Ans-50-60%
, In the 60s only 30
Basic elements of a simulator Correct Ans-Gantry
PSA
X-ray tube
Collimater device
Imaging system of fluoro unit
Optical devices
Treatment planning Correct Ans-Tumor localization - hitting where we want and locating
critical structures
Computation of dose distributions
Fabrication of treatment aids
Set up functions of simulation Correct Ans-Tumor localization - what is done first.
Determining tumor volume and critical structures around
Treatment verification (what's on the computer is what is being done to patient)
DRR Correct Ans-digitally reconstructed radiograph
Conventional simulation Correct Ans-designed to simulate the mechanical, geometrical, and
optical conditions of various treatment units.
Gantry parts Correct Ans-Arm
Head
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 or Stuvia-credit 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 TheeGrades. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now