Mixed Attentuation - Malignant Pulmonary Nodules on CT are characterized by:
Reed-Sternberg Cells - Hodkin's Lymphoma is separated from other Lymphomas by the presence of:
Acetylecholinestrearse Inhibitors
N-methyl-D-aspartate receptor antagonists - Two types of Alzheimer's mediciation:
Left Su...
NMTCB PET EXAM REVIEW Questions And Answers. Mixed Attentuation - ✔✔Malignant Pulmonary Nodules on CT are characterized by: Reed -Sternberg Cells - ✔✔Hodkin's Lymphoma is separated from other Lymphomas by the presence of: Acety lecholinestrearse Inhibitors N-methyl -D-aspartate receptor antagonists - ✔✔Two types of Alzheimer's mediciation: Left Subclavian Vein - ✔✔Lymphatic Drainage for most of the body is via: Erythropoietin - ✔✔Hormone made in kidney's that signals the bone marrow to make more RBCs: Renal Cancer - ✔✔Affects woman >65 Renal Cell carcinomas mostly Wilm's Tumor (pediatric) covered under guidlines Pancreatic Cancer - ✔✔Most begins in ducts Spread s to peritoneum, liver, lungs Imaging neck to pelvis Covered under CMS NCD Portal Vein and Hepatic Artery - ✔✔The Liver primarily receives blood from: Gastric Cancer - ✔✔Men >65 Cardia, fundus, corpus, antrum, pylorus Imaging Neck to Lower Pelvis Five la yers; mucosa, submucosa, muscularis, subserosa, serosa Cells of Cajal - ✔✔Pacemaker of GI Tract Staging, Restaging, Monitoring response to theraphy - ✔✔Breast Cancer CMS coverage Initial or Subsequent treatment strategy - ✔✔Lung Cancer CMS coverage Non -Small Cell -More Common -Spreads slowly -Bone, Liver, Brain, Adrenal Glands Small Cell -Rapid Growth - ✔✔Two major types of Lung Cancer: Esophageal Cancer - ✔✔Affects men more than women >65 years Squamous cell and mucinoid Neck to pelvis imaging Esophageal Cancer coverage - ✔✔Initial Treatment, restaging, response to therapy, recurrance Thalamus - ✔✔Brain structure described as "sensory relay" Lipophilicity - ✔✔Physiochemical property of a PET tracer that decides it's ability to enter the brai n and label the target receptor or enzyme: F-18 Flurpiridaz - ✔✔Binds to mitochondrial complex 1 Used for myocardial perfusion imaging Nucleophillic Substitution and Purification Performed similar to Tc -99m Rest/Stress Negatrons and Positrons - ✔✔Beta pa rticles are electrons that contain _____________ and ____________. Electron Capture or Positron decay - ✔✔Proton rich nuclei decay either by _____________ or ______________ . 1/3 ex: F -18 Max = 635 KeV Mean = 210 KeV - ✔✔Mean energy of an ejected positron is about ___________ of the max energy. Decrease Resolution - ✔✔Longer range of travel for a positron before annihilation will ___________ resolution. Positron emitted from atom w/ high kin. energy Slows, combines w/ electron Forms postironium briefly, spin Mass is converted to energy, release two 511 KeV photons - ✔✔Annihilation Reaction 2 mm 0.25 degree deviation - ✔✔Non -colinearity results in blurring effect on clinical PET s canners of approximately _____ mm and angle of _____ deviation from 180. Gas-Filled Anode and Cathode Operates at Low Voltage - ✔✔Ionization chamber is a ____________ detector w/ a ______________ and ______________ . National Institute of Standards and Technology ( NIST) - ✔✔Ionization chamber is calibrated annually using a _____________ source so that exposure rate a given distance is known. Geiger -Muller - ✔✔Gas-Filled (noble gases) High Voltage Secondary Ionization ---> Townsend Avalanche = high sens itivity Sinogram - ✔✔A 2D projection space representation of a transaxial image X-axis sinogram - ✔✔Represents shift on LOR from the center of the gantry Y-axis sinogram - ✔✔Represents projection angle of LOR Ring Artifact - ✔✔CT artifact caused by a faulty detector Produces ring or concentric circles on CT image Photoelectric Effect - ✔✔Electrons are emitted from matter Absorption of energy from electromagnetic radiation of a very short wavelength Pair Produ ction - ✔✔2 electrons One -, one +, from a pulse of electromagnetic energy traveling through matter Opacity - ✔✔Any area that preferentially attenuates x -rays Appears more opaque than surrounding area
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