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“ap”
anteroposterior, AP
From the front to the back, as opposed to posteroanteror.
When a chest X-ray is taken with the patient's back against the film plate and the X-ray machine is in front of the patient, it is referred to as an AP, or anteroposterior, view.
This entry is located in the following unit:
Medical Orientation Words with Reference to the Body
(page 1)