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| Adult | Other related pages of interest |
| Name of projection | Ribs - PA Chest. (See "Special Notes" below). |
| Area Covered | This view best shows the anterior ribs. It also shows the lung fields, mediastinal structures and diaphragm. |
| Pathology shown | Pathologies of the ribs, particularly, fractures of the anterior ribs. This view may also show related pathologies, such as a pneumothorax resulting from trauma to the ribs |
| Radiographic Anatomy | Chest 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 | 100 kVp 4mAs |
| FFD / SID | 180cm |
| 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 PA |
| 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 ribs as possible to be seen |
| Positioning |
A. "Hug" the bucky by bringing the forearms behind the bucky (some buckys have purpose built handles for the patients to hold) |
| 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. |
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AndyC |
Latest page update: made by AndyC
, Jun 19 2011, 2:35 PM EDT
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Keyword tags:
chest
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| Started By | Thread Subject | Replies | Last Post | ||
|---|---|---|---|---|---|
| eliseleblanc | 15 degree caudal angulation | 0 | Jul 13 2010, 8:46 PM EDT by eliseleblanc | ||
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Thread started: Jul 13 2010, 8:46 PM EDT
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I've just read in Merrill's (11th ed., volume 1, page 486) that a 10-15 degree caudal angulation projects the diaphragm below the 7th, 8th, and 9th ribs when doing PA anterior rib radiography. This angulation seems like it would project the diaphragm higher onto the ribs, what with the posterior sloping of the diaphragm. Could anyone explain how this angulation aids in demonstrating the lower anterior ribs?
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