What is the correct sequence for a standard chest radiography positioning?

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The main idea is to obtain a true, well-centered chest image with full inspiratory effort and minimal artifacts. Positioning upright when possible helps the lungs expand fully and reduces magnification of the heart. Keeping the patient true to the midline prevents rotation, which can distort the mediastinum and lung fields. Having the shoulders and arms rolled forward clears the thoracic area so the scapulae don’t obscure the lungs, especially the apices and bases. Centering the central ray to the midline at a level that includes the lungs ensures both lungs are captured without crops or distortion.

These elements together produce a high-quality chest radiograph with symmetric, unobstructed visualization of the lungs and mediastinal structures. Positions like prone, lying on the side, or centering the beam to the abdomen or pelvis, or ignoring midline alignment, would lead to rotated, miscentered, or obscured images and are not suitable for a standard chest radiograph.