Shoulder bone scan everyday life, sports activities at the side of the shoulder joint, or applying strong force in the lateral occurs. Mainly on upper arm abduction, temple, other rotational dislocation of the shoulder joint gahaejyeo as useful for observing the presence or absence of lesions is used. Shoulder PA oblique projection prevent distortion of the image due to the angle and the most useful diagnostic radiological investigate shooting angle. Shoulder blade body and the acromion and coracoid process Y-view is formed characters. 10°angle between the shoulder blades and the acromion is the obstruction. 20°~ 25°to the Y-view of the humerus head looks superimposed, the position of the shoulder joint and seemed appropriate. 35° of the humerus head superimposed on the Y-view, but above the humerus head and shoulder joints were distorted. When 45°elevation observed on the side of the best has come Y-view also acromion and coracoid process is finished.