and CORRECT Answers
Malignant Pulmonary Nodules Mixed Attentuation
on CT are characterized by:
Hodkin's Lymphoma is separated Reed-Sternberg Cells
from other Lymphomas by the
presence of:
Two types of Alzheimer's Acetylecholinestrearse Inhibitors
mediciation: N-methyl-D-aspartate receptor antagonists
Lymphatic Drainage for most of Left Subclavian Vein
the body is via:
Hormone made in kidney's that Erythropoietin
signals the bone marrow to
make more RBCs:
Affects woman >65 Renal Cancer
Renal Cell carcinomas mostly
Wilm's Tumor (pediatric)
covered under guidlines
Most begins in ducts Pancreatic Cancer
Spreads to peritoneum, liver,
lungs
Imaging neck to pelvis
Covered under CMS NCD
The Liver primarily receives Portal Vein and Hepatic Artery
blood from:
Men >65 Gastric Cancer
Cardia, fundus, corpus, antrum,
pylorus
Imaging Neck to Lower Pelvis
Five layers; mucosa, submucosa,
muscularis, subserosa, serosa
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, Pacemaker of GI Tract Cells of Cajal
Breast Cancer CMS coverage Staging, Restaging, Monitoring response to theraphy
Lung Cancer CMS coverage Initial or Subsequent treatment strategy
Non-Small Cell
-More Common
Two major types of Lung -Spreads slowly
Cancer: -Bone, Liver, Brain, Adrenal Glands
Small Cell
-Rapid Growth
Affects men more than women Esophageal Cancer
>65 years
Squamous cell and mucinoid
Neck to pelvis imaging
Initial Treatment, restaging, Esophageal Cancer coverage
response to therapy, recurrance
Brain structure described as Thalamus
"sensory relay"
Physiochemical property of a Lipophilicity
PET tracer that decides it's ability
to enter the brain and label the
target receptor or enzyme:
Beta particles are electrons that Negatrons and Positrons
contain _____________ and _________ _.
Proton rich nuclei decay either Electron Capture or Positron decay
by _____________ or ____________ _ .
Mean energy of an ejected 1/3
positron is about ________ of the
max energy. ex: F-18 Max = 635 KeV Mean = 210 KeV
Longer range of travel for a Decrease Resolution
positron before annihilation will
___________ resolution.
Positron emitted from atom w/ high kin. energy
Slows, combines w/ electron
Annihilation Reaction
Forms postironium briefly, spin
Mass is converted to energy, release two 511 KeV photons
Non-colinearity results in 2 mm
blurring effect on clinical PET 0.25 degree deviation
scanners of approximately _____
mm and angle of ____ deviation
from 180.
Ionization chamber is a ____________ Gas-Filled
detector w/ a __________ and Anode and Cathode
______________ . Operates at Low Voltage
Ionization chamber is calibrated National Institute of Standards and Technology ( NIST)
annually using a _____________
source so that exposure rate a
given distance is known.
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