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Unit4X-rayInteractions&Attenuation

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    • 1. Energy
    • 2. Thickness
    • 3. Atomic Number
    • 4. Density
  2. Attenuated Radiation = ____ + ____
    Attenuated Radiation = Absorbed + Scatter
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    • 1. Whole atoms
    • 2. Orbital electrons
    • 3. Nucleus
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    • 1. Incident photons
    • 2. Target atom
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    • Coherent Scattering
    • 10 keV
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    • Outer-shell
    • Backscatter
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    Ei Incident photon energy = Es Scattered Compton photon energy + (Eb Electron binding energy + Eke Kinetic energy given to ejected recoil electron)
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    • Photoelectric Absorption
    • inner-shell
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    Ei = Eb + Eke
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    • Decreases
    • Increases
    • Decreases
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    • KV
    • Decreases
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    • 1. Pair Production
    • 2. Nuclear
    • 3. Therapeutic 
    • 4. 1.02 MeV
    • 5. Negatron 
    • 6. Positron
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    • 1. Photodisintegration
    • 2. Nucleus
    • 3. 10 MeV
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    • 1. Oxygen
    • 2. Carbon
    • 3. Hydrogen
    • 4. Nitrogen 
    • 5. Calcium
    • 6. Phosphorus
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    • 1. Air
    • 2. Fat
    • 3. Muscle
    • 4. Bone
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    • 1. Subject Density
    • 2. Subject Contrast
    • 3. Subject Detail
    • 4. Subject Distortion
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    Pleural Effusion   (additive condition)
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    Cardiomegaly   (additive condition)
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    Congestive Heart Failure   (additive condition)
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    Pneumonia.  (additive condition)
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    Pulmonary Edema.  (additive condition)
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    Pneumonectomy. (additive condition)
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    Cirrhosis (enlarged liver). (additive condition)
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    Paget’s Disease (additive condition)
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    Osteochondroma (additive condition)
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    Pneumothorax.   (Destructive condition)
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    Bowel Obstruction.  (Destructive condition)
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    Pneumoperitoneum.  (Destructive condition)
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    Osteoporosis.   (Destructive condition)
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    Carcinoma (giant cell).    (Destructive condition)
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    Multiple Myeloma.   (Destructive condition)
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    Osteolytic Metastasis (from renal carcinoma).   (Destructive condition)
Author
Marc817
ID
348665
Card Set
Unit4X-rayInteractions&Attenuation
Description
Unit 4 X-ray Interactions & Attenuation
Updated

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