The first video below provides an example of filling the NEMA phantom using a 1-syringe methodology.

The second  video explains the uniformity and NEMA phantoms required to obtain and maintain EARL PET/CT accreditations for ¹⁸F, ⁶⁸Ga and ⁸⁹Zr. For this NEMA phantom the 2-syringe methodology is shown.