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Identity Dose Route of administration 99mTc-pertechnetate (99mTcO4) 200 MBq (5.5 mCi); range, 200–900 MBq (5.5–25 mCi) Inhalation Lung count rate in posterior position should be about 1,000–1,500 counts/s, equating to 20–50 MBq delivered to lungs.
Parameter Specification Standard/preferred/optional Camera type Large field of view Standard Energy peak 140 keV Standard Energy window 20% Standard Collimator Low-energy, high-resolution Standard Patient position Supine Standard Camera position Lungs within field of view Standard Inhalation-to-imaging time Acquisition started on completion of inhalation Standard Acquisition type Static Standard Views Anterior, posterior, right anterior oblique, left anterior oblique, right posterior oblique, left posterior oblique, right lateral, and left lateral Standard Additional views NA NA Matrix 256 × 256 Standard Number of views 8 Standard Counts/view 300,000–500,000 (corresponding perfusion images should acquire 800,000–1,000,000 counts) Standard Additional images: time per view NA NA NA = not applicable.
Parameter Specification Standard/preferred/optional Camera type Large-field-of-view multidetector Standard Energy peak 140 keV Standard Energy window 20% Standard Collimator Low-energy, high-resolution Standard Patient position Supine Standard Camera position Lungs within field of view Standard Inhalation-to-imaging time Acquisition started on completion of inhalation Standard Acquisition type Step and shoot or continuous Standard Orbit 180° or 360° Standard Orbit type Noncircular Standard Matrix 128 × 128 Standard Number of projections 120 Standard Time per projection 12–15 s Standard CT acquisition Per manufacturer’s recommendations for attenuation correction or diagnostic imaging Optional
