TABLE 4

Position-Related Artifacts

ViewScintigraphic appearanceImpact on interpretation
Anterior–posterior (blood pool)Focal increased metatarsal uptakeFalse-positive blood-pool image
Medial or lateralFocal increased uptake in forefootDifficulty in separating bones of forefoot
Diffuse increased uptake in mid and hind footOverlapping lesions in talus and navicular
PosteriorDiffuse increased uptake in mid footDifficulty in separating bones of mid foot
Diffuse increased uptake in hind footCannot differentiate talus and calcaneus
PlantarFocal increased uptake in hind footCannot differentiate talus and calcaneus