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Chest - AP Supine
Radiographic Positioning
| Adult | Other related pages of interest |
| Name of projection | Chest - AP Supine (when not able to sit or stand) |
| Area Covered | Lung fields, apices, costophrenic angles, heart |
| Pathology shown | The placement of various medical equipment can be seen, such as, Central Venous Catheters (CVC), Nasogastric Tubes (NGT), Chest Tubes, Endotracheal Tubes, Swan-Ganz catheters and Pacemakers It is important to note that pleural effusions are best seen in an Erect Chest X-ray. In a Supine Chest X-ray the fluid is dispersed evenly through the lung fields, and so air-fluid levels will not show. |
| 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 /not for most portable CXR's |
| Filter | No |
| Exposure | 85 kVp 2 mAs no grid 100 kVp 4 mAs with grid |
| FFD / SID | As large as possible up to 180 cm This may be helped by having the bed as low as possible and the X-ray tube as high as you can, giving an FFD/SID up to 180 cm |
| Central Ray | Directed to the midsaggital plane, approximately 10 cm inferior to the jugular notch. (This is at the level of T7). Perpendicular to the coronal plane and the IR |
| Collimation | Centre: 10 cm inferior to the jugular notch 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 laterally. |
| Markers | Superior and Lateral Marker orientation AP |
| Shielding | Gonadal (check your department's policy guidelines) |
| Respiration | On suspended deep inspiration |
| Positioning |
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| Critique | Positioning No rotation as evidenced by
Area Covered
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| Special Notes | PA Erect Chest vs AP Supine Chest Where possible a PA Erect should be done instead of the AP Supine view. The AP Supine Chest view is taken when the patient is unable to be safely moved into the upright position. Differences or disadvantages of the AP Supine Chest view are;
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AndyC |
Latest page update: made by AndyC
, May 19 2011, 12:33 PM EDT
(about this update
About This Update
Edited by AndyC
5 words added 6 words deleted view changes - complete history) |
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Keyword tags:
AP Supine Chest technique
Chest Positioning technique
More Info: links to this page
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| Started By | Thread Subject | Replies | Last Post | ||
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| Anonymous | instructions for AP | 2 | May 6 2009, 5:22 AM EDT by SaxyLady | ||
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Thread started: Apr 28 2009, 2:11 PM EDT
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should we always do the deep inspiration for AP view??
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| classifiied82 | breathing instructions | 4 | Nov 6 2008, 11:29 PM EST by Anonymous | ||
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Thread started: Jun 3 2008, 11:05 PM EDT
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why do we need to hold our breath for chest x-ray exam????
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Keyword tags:
AP Supine Chest technique
breathing
Chest Positioning technique
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| Anonymous | Supine CXR | 2 | Mar 13 2008, 12:33 AM EDT by AndyC | ||
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Thread started: Mar 12 2008, 10:43 PM EDT
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Hi Angela, Great to see you contributing. Well done. Just a couple of thoughts on the supine chest.....How do you achieve a FFD of 180cm's? To compensate for the ribs appearing slightly flattened or lordotic, would it help to have a slight angle down of the tube as would do in an AP erect chest?
Denise O
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AP Supine Chest technique
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