anteroposterior projection
1projection — 1. A pushing out; an outgrowth or protuberance. 2. The referring of a sensation to the object producing it. 3. A defense mechanism by which a repressed complex in the individual is denied and conceived as belonging to another person, as when… …
2anteroposterior — 1. Relating to both front and rear. 2. In x ray imaging, describing the direction of the beam through the patient (projection) from anterior to posterior, e.g., an A P projection of the abdomen; or the direction of view (A P …
3anteroposterior (AP) projection — a radiographic projection in which the central ray goes from the front to the back of the body or part, with the film at the back …
4brow-up projection — an anteroposterior projection of the head with the patient supine …
5frog-leg projection — an anteroposterior projection of the abducted hips …
6mortise projection — an anteroposterior projection of the ankle with the foot rotated internally 15 to 20 degrees so that the bases of the tibia and fibula are no longer in front of the talus …
7open-mouth projection — an anteroposterior projection of the cervical spine, particularly the axis and atlas, done through the open mouth with the patient supine and the central ray pointing vertically downward …
8Towne projection — a radiographic projection of the head in which the central ray enters obliquely through the frontal bone, yielding a view of facial structures and the occipital bone; it is an anteroposterior half axial projection …
9frontal projection — a radiographic projection in which the central ray is perpendicular to the frontal plane; it may be either anteroposterior or posteroanterior …
10half-axial projection — a radiographic projection of the head with the central ray at an angle to the frontal and medial planes; it may be either anteroposterior or posteroanterior. Called also semiaxial p …