Ribs - AP Upper (1-8)
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Radiographic Positioning
Adult | Other related pages of interest |
Name of projection | Ribs - AP Upper (1-8) (See "Special Notes" below). |
Area Covered | This view best shows the posterior ribs. It also shows the lung fields, mediastinal structures and diaphragm. |
Pathology shown | Pathologies of the ribs, particularly, fractures of the upper posterior ribs. |
Radiographic Anatomy | Ribs radiographic anatomy |
IR Size & Orientation | 35 x 43 cm Landscape usually, but may be portrait depending on body habitus D.R. may cover 43 x 43 cm |
Film / Screen Combination | Regular (CR and DR as recommended by manufacturer) |
Bucky / Grid | Moving or Stationary Grid |
Filter | Decubitus filter for women with large breasts, particularly for non-digital imaging |
Exposure | 65 kVp 16 mAs |
FFD / SID | 100 cm |
Central Ray | Directed to the midsaggital plane at the level of T7 Perpendicular to the IR |
Collimation | Centre: T7, or the inferior border of the scapula Shutter A: Open to approximately 5cm above the shoulder to include upper airway Shutter B: Open to the level of the acromioclavicular joints (AC joints) laterally. This will include the lung fields and ribs laterally. |
Markers | Superior and Lateral Marker orientation AP |
Shielding | Gonadal (check your department's policy guidelines) |
Respiration | On suspended deep inspiration This ensures the diapragm is as low as possible, allowing as many upper ribs as possible to be seen |
Positioning | |
Critique | Positioning
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Special Notes | PA vs AP Rib views There are several factors that will determine whether a PA or an AP rib view is indicated for the X-ray examination. The following information should be considered - the patient's clinical history - the mechanism of injury - the region of the rib cage which is painful The cortical margins and bony trabeculation of the ribs closest to the IR/bucky will be sharper and clearer. Therefore, Anterior ribs are best shown on a PA view & Posterior ribs are best shown on an AP view. |