Saturday, February 28, 2009

How to do x-ray of the middle finger?

The projections are PA & lateral.
The central ray is perpendicular to the proximal interphalangeal joint.
FFD is 100cm. Direct beam (no Bucky).
Exposure factors: depends on individual x-ray system. It should be around 40-50kV and 1-2mAs.
You may split the cassette into 2 to accommodate both projections in 1 film. A 10x12 cassette is ideal.

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