Thoracic Cage

3 Thoracic Cage

• Right or left posterior obliques

• Lower ribs – AP

• Anterior oblique (RAO)

UPPER RIBS

Projection: RIGHT OR LEFT POSTERIOR OBLIQUES

Centring Point: In the mid-clavicular line of the side under examination – at level of the midpoint of the sternal body. Horizontal central ray

Projection: LOWER RIBS – AP

Centring Point: To a point in the midline midway between the xiphisternum and the lower costal margin

Points to consider

Technique

Trauma – oblique ribs not always necessary – rarely changes management of the patient

Oblique – exposure on arrested full inspiration

Oblique – patient erect – better with inspiration

AP – exposure on arrested expiration to show the maximum number of ribs below the diaphragm

Radiological assessment

Check each rib for # – it is rare to see displacement due to the numerous attached muscles

Oblique – ribs away from cassette will be foreshortened

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Tags: Pocketbook of Radiographic Positioning

Mar 6, 2016 | Posted by admin in GENERAL RADIOLOGY | Comments Off

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