Nuclear medicine

Lecture 3

• SPECT

  • Single photon emission computed tomography

  • Want pixel size half the FWHM resolution

  • Quality control

    • Tests system performance quarterly

      • Use a jaszczak phantom filled with Tc-99m

    • Test uniformity correction map monthly

    • Test center of rotation monthly

• Gamma camera quality control

  • Uniformity index = measures non-uniformity = lower number is better because means less non-uniformity

  • >5% = need recalibration

• Bar phantom

  • tests spatial resolution

  • tests linearity