Position-Related Artifacts
View | Scintigraphic appearance | Impact on interpretation |
---|---|---|
Anterior–posterior (blood pool) | Focal increased metatarsal uptake | False-positive blood-pool image |
Medial or lateral | Focal increased uptake in forefoot | Difficulty in separating bones of forefoot |
Diffuse increased uptake in mid and hind foot | Overlapping lesions in talus and navicular | |
Posterior | Diffuse increased uptake in mid foot | Difficulty in separating bones of mid foot |
Diffuse increased uptake in hind foot | Cannot differentiate talus and calcaneus | |
Plantar | Focal increased uptake in hind foot | Cannot differentiate talus and calcaneus |