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Chest
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Chest 2 views PA (Posterior to Anterior) Lateral
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Facts to Know for PA 14 x 17 Cassette
Crosswise for men Lengthwise for women Shielding required (around waist) Mark in light field anatomically correct
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Positioning of PA Patient is erect, weight evenly distributed
Mid-sagittal plane to mid-line of image receptor (IR) Chin raised Hands on lower hips Shoulders rotated forward against IR Shoulders depressed downward NO ROTATION
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Central Ray (CR) T-7 ( 7-8 inches below vertebral prominens)
Source to Image Distance (SID) 72 inches
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Techniques 110 3 mAs Collimate to outer skin borders laterally and top border should be level of vertebral prominens Breathing- hold breath on 2nd full inspiration
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Radiograph Critique Both lungs—apices and costophrengic angles
Air field trachea Hilum markings Rotations- sternoclavical (SC) joints equal distance from center of vertebral column No scapula in lung field No chin superimposition in apices Correct KVP- vertebral bodies through heart shadow
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Facts for the Lateral 14 x 17 cassette Shield Mark
Lengthwise for both men and women Shield Mark
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Positioning for Lateral
Patient is erect LEFT side against IR, weight evenly distributed Align mid-sagittal plane parallel to IR True lateral position Arms raised above head Chin elevated
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Central Ray (CR) CR is at mid- thorax at T-7 (3-4 inches below jugular notch) SID 72 inches
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Techniques 125 6 mAS Collimation- lateral borders and top at vertebral prominens Breathing—Suspend on 2nd full inspiration
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Film Critique Entire lungs from apices to the costophrenic angles
Sternum anterior- ribs posterior No superimposition of chin or arms in apices No rotation- Ribs are superimposed No tilting Correct KVP- see rib outlines and lung markings through heart shadow and upper lung areas
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