Tomographic Reconstruction Artifacts
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Questions and Answers

Uncorrected flood field nonuniformities cause _______ artifacts in tomographic reconstruction.

  • Circular (correct)
  • Regular
  • Irregular
  • Linear
  • Temporal smoothing could be appropriately applied in which of the following studies?

  • Thyroid Imaging
  • Gated Equilibrium Cardiac Function Study (correct)
  • Whole Body Bone Imaging
  • SPECT Study of the Liver
  • Center of Rotation should show less than ____mm of variation over a 360 degree orbit.

  • 1
  • 2 (correct)
  • 5
  • 10
  • Which adjunctive medication is utilized for the evaluation of biliary atresia?

    <p>Phenobarbitol</p> Signup and view all the answers

    Personnel must wear a radiation monitoring device during work hours if they are:

    <p>Likely to exceed 10% of the annual maximum allowable occupational exposure</p> Signup and view all the answers

    If a source of Tc99m radioactive contamination produces an exposure rate of 3 mR/hour, how long will it take for the exposure rate to drop to a background exposure rate of 0.05 mR/hour?

    <p>6 half-lives</p> Signup and view all the answers

    The limit for administered Mo99 contamination in a solution of Tc99m is no more than:

    <p>0.15 uCi Mo99 per mCi Tc99m (5.55 kBq Mo99 per 37 MBq Tc99m)</p> Signup and view all the answers

    Which of the following radiopharmaceuticals is used to label white blood cells with Tc99m?

    <p>Tc99m Exametazime</p> Signup and view all the answers

    How long do you maintain calibration records on a survey meter?

    <p>3 years</p> Signup and view all the answers

    Based on the data shown, what are the net counts in the cardiac region of interest? Total counts # pixels Cardiac ROI 28,503 417
    Background ROI 1,859 88

    <p>19,694</p> Signup and view all the answers

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