Techniques 8th Edition By Kristen M. Waterstram-Rich, MS,
CNMT, NCT, FSNMTS and David Gilmore 9780323356220
Chapter 1-24 Complete Guide .
What is PET? - ANSWER: Positron emission tomography, creates functional images of metabolic
processes by allowing investigation at the cellular level
What is CT? - ANSWER: Computed tomography, creates anatomical images used for attenuation
correction of PET images and for anatomic correlation
What are lines of response? - ANSWER: In conventional PET imaging, coincidence event is recorded as
the line connecting the 2 detectors. Does not record information about where along the line the
event occured/
What is Time of Flight? - ANSWER: Lines of response are recorded as well as the time difference
between the two detections. The point along the line is estimated using the time difference
information.
How long does a patient need to fast in PET/CT? - ANSWER: 6 hours prior to injection
What is the dose per kg of FDG? - ANSWER: 0.14 mCi/kg
What is the dose for a patient weighing 150 lbs for FDG? - ANSWER: 10 mCI
What is the FDG dose for a patient weight between 150-225 lbs? - ANSWER: 15 mCi
What is the dose for patients weighing 226 lbs or more? - ANSWER: 20 mCi
Skull base to mid thigh imaging is typical for most what? - ANSWER: Cancer imaging
When do we image from head to toe? - ANSWER: melanoma, multiple myeloma
What can PET imaging do that traditional anatomic imaging cannot? - ANSWER: Differentiate between
benign and malignant tumors
Aid in differentiating primary and metastatic disease
Can stage cancers prior to therapy by imaging all organs in one scan
Why is PET imaging able to detect changes in disease or cancer better than CT, MRI, or Ultrasound? -
ANSWER: Because anatomical changes occur in later stages of disease, where as physiologic changes
occur in early stages making PET/CT a valuable tool.
Due to high glycolytic activity, activated inflammatory cells have __________ FDG uptake. - ANSWER:
increased
FDG rapidly accumulates at sites of _____________ __________ and in reactive lymph nodes. -
ANSWER: bacterial infection
What is granulation? - ANSWER: Formation of wounds of tiny rounded masses
What are signs of inflammation? - ANSWER: Pain
, Redness
Immobility
Swelling
Heat
If the internal inflammation pushes against the inner linings of the body, then there is __________. -
ANSWER: Pain
What are three main processes that occur before, and during acute inflammation? - ANSWER: Dilation
of arterioles to the damaged region and increased blood flow
Increase permeability of capillaries allowing fluid and proteins into interstitial spaces
Movement of neutrophils, and possibly macrophages into interstitial spaces
What are types of autoimmune diseases? - ANSWER: Rhemuatoid arthritis
ANkylosing spondylitis
Celiac disease
Fibromyalgia
Idiopathic pulmonary fibrosis
Lupus
Psoriasis
Addison's disease
Vasculitis
Transplant rejection
Various allergies
What are indications for a PET/CT scan? - ANSWER: Fever of unknown origin
Bone infection
Diabetic foot infections
Evaluation of therapy
Prosthesis infections
Vascular graft infections
Vasculitits
AIDS/tuberculosis
What is the definition of a FUO? - ANSWER: A fever equal to or over 38.3 degrees Celsius, lasting 2-3
weeks or longer, undiagnosed after 1 week of hospital evaluation
What are causes of a fever of unknown origin? - ANSWER: -Infection