Nuclear Medicine, PET, SPECT/CT Imaging Questions and Answers
4 views 0 purchase
Course
NucMed
Institution
NucMed
Nuclear Medicine, PET, SPECT/CT Imaging Questions and Answers
What does nuclear medicine evaluate?
How organs are functioning (physiology) to help detect pathology at the molecular level - differs from other modalities because it doesn't show changes in anatomy
Where is the preparation of ...
Nuclear Medicine, PET, SPECT/CT
Imaging Questions and Answers
What does nuclear medicine evaluate? - answer How organs are functioning
(physiology) to help detect pathology at the molecular level - differs from other
modalities because it doesn't show changes in anatomy
Where is the preparation of pharmaceuticals done? - answer In the radiopharmacy
What are the 2 parts of radiopharmaceuticals? - answer The drug portion (goes to
the source), and the radioactive isotope (so we can see it)
How can radiopharmaceuticals be administered? Is there any pain or side effects
associated with the drugs? - answer Injected into a vein in the arm, orally, or inhaled
depending on the study
- no pain or side effects
What is the most common nuclide? What E does it have? - answer technetium 99-m
(Tc-99m), 140 keV
What is the half life of technetium 99-m? How long does it take to be completely
voided? - answer 6 hour half life, 24 hours to be completely voided
How are images obtained? - answer - gamma radiation is emitted from within the
patient (as opposed to through the pt)
- emission of gamma photon represents the location of the radionuclide w/in the
structure
- information emitted is captured by a detector
- function determined by intensity of gamma radiation emitted
What are contraindications for a nuclear medicine study? - answer - no barium for 48
hours
- no previous NM tests
What is the appropriate preparation for a NM test? - answer Fasting and stopping
medications
Why are patients allowed to stay clothed? - answer Because you're using higher
energy photons so clothing doesn't leave artifacts
What is the range of exam lengths for NM testing? - answer 30 min to several days
, What are some test-specific history questions? - answer Broken bones, bone
disease, renal disease, surgery to the bones, cancer, etc.
What do hot spots demonstrate? - answer Areas of increased uptake
What do cold spots demonstrate? - answer Areas of decreased uptake
What does CNS NM testing determine and measure? What radionuclide is used? What
is the diagnostic correlation? - answer Brain viability and measures the regional
cerebral blood flow to assess if there is sufficient activity to sustain life
- 99m Tc-Bicisate (Neurolite)
- EEG
What does pulmonary system NM test used to diagnose? What are you looking for?
What radionuclide(s) are used? What is the diagnostic correlation? - answer Used to
diagnose pulmonary embolism by looking at both the ventilation/air flow and
perfusion/b+ flow of the lungs
- looking for a "mismatched" defect
- 99 Tc-DTPA and 99m Tc-MAA
- CXR, CT, US (to assess for CVT), MRA
(Normal pulmonary scan)
What are the 2 phases of pulmonary system NM testing? - answer Ventilation -
assess air flow to the lungs by breathing in a radioactive aerosol
Perfusion - assess b+ flow to the lungs by injecting the radioactive tracer IV
(Scan w/ pulmonary embolism)
What is myocardial perfusion imaging differentiating? What is the diagnostic
correlation? - answer Differentiates between ischemia and infarction - aids in the
diagnosis and mgmt of CAD regionally and globally
- diagnostic correlation: coronary angiography, exercise stress test, echocardiogram, b+
test (cardiac enzymes)
- SPECT/CT
What are examples of therapeutic uses of myocardial perfusion imaging? - answer
CABG, angioplasty/stent, pacemaker, valve replacement
Stress/Rest Tests - answer
What different formats can images be obtained in? - answer Planar, dynamic, and
3D
What radiopharmaceuticals does SPECT imaging use? - answer The same as NM
What does SPECT stand for? - answer Single photon emission computed
tomography
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 Pogba119. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
