HIDA for acute cholecystitis, bile leak or biliary atresia
VQ scans
GIB Scan (tagged Red blood cell)
Brain death
NPO for at least 4 hours or less than 24 hours
If NPO >24 hours or TPN need to pretreat with CCK (0.02mcg/kg IV) (30 min)
Hold opiates for 6 hours (Not an absolute contraindication)
See Flowchart on the right (Source)
Source: Ventilation-Perfusion Scan: A Primer for Practicing Radiologists Paul-Robert Derenoncourt, Gabriel J. Felder, Henry D. Royal, Sanjeev Bhalla, Jordan A. Lang, Manuela C. Matesan, and Malak Itani RadioGraphics 2021 41:7, 2047-2070
T99m-HMPAO, 20 mCi IV
May need to call in on-call staff (then on call staff can contact NM staff)