Quantitative bias that refers to the underestimation of counts density which
differs from what they should be is called:
(A) Motion artifact
(B) Partial-volume effect
(C) Recovery coef fi cient
(D) Truncation artifact - answer(B) Partial-volume effect
Truncation artifacts in PET/CT imaging are produced by:
(A) Contrast medium
(B) Difference in size of FOV between PET and the CT
(C) Difference in scanning time between PET and the CT
(D) Beds overlapping - answer(B) Difference in size of FOV between PET and the CT
Property of PET detectors that allows them faster timing signals for coincidence
detection and to work at high count rates is called:
(A) The stopping power
(B) Energy resolution
(C) The decay constant
(D) The light output - answer(C) The decay constant
The first PET radiopharmaceutical to receive the U.S. Food and Drug
Administration approval in 1989 was:
(A) Rb-82
(B) F-18 Fluoride
(C) F-18 FDG
(D) N-13 ammonia - answer(A) Rb-82
The dose calibrator quality control procedure performed to assess the device's
ability to measure accurately a range of a low to high activities is called:
(A) Geometry
(B) Accuracy
(C) Linearity
(D) Constancy - answer(C) Linearity
The following positron-emitting radionuclides are isotopes of natural elements present in
most biochemical processes EXCEPT:
(A) O-15
(B) F-18
(C) C-11
(D) N-13 - answer(B) F-18
, Two photons arising from the same annihilation event and detected by two
detectors within the coincidence time-window are:
(A) True coincidences
(B) Random events
(C) Scatter coincidences
(D) Single events - answer(A) True coincidences
Positronium (Ps) is an arrangement of:
(A) Two positrons
(B) Two electrons
(C) An electron and a positron
(D) A positron and a neutrino - answer(C) An electron and a positron
The combined whole-body effective dose for a clinically diagnostic PET/CT is
typically in the range:
(A) <10 mSv
(B) 10-20 mSv
(C) 20-30 mSv
(D) >30 mSv - answer(C) 20-30 mSv
The positron has the same mass as an electron and an electric charge of:
(A) -2
(B) −1
(C) 0
(D) +1 - answer(D) +1
The initial diagnosis of melanoma is established by:
(A) PET examination
(B) CT examination
(C) Histologic evaluation
(D) Dermatologist evaluation - answer(C) Histologic evaluation
Which of the following is cyclotron produced positron-emitting radionuclide?
(A) Copper-62
(B) Nitrogen-13
(C) Gallium-68
(D) Rubidium-82 - answer(B) Nitrogen-13
DNA synthesis is a measure of cellular:
(A) Apoptosis
(B) Mutation
(C) Proliferation
(D) Metabolism - answer(C) Proliferation
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 julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.