Use of SPECT/CT with ^99mTc-MDP Bone Scintigraphy to Diagnose Symptomatic Os Acromiale

Top row shows static bone scan and blood-pool images, middle row images shows fused SPECT/CT images, and bottom row shows attenuation correction CT. Arrows are placed at ossification centers of apophyses. Center is at meso-acromion on left (white arrow) but at preacromion on right (black arrow). Right apophysis is nearly fused and has less activity than unfused apophysis of left acromion.