axial projection

a radiographic projection in which the central ray goes from the base to the vertex or from the vertex to the base of a structure.

Medical dictionary. 2011.

Look at other dictionaries:

  • half-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 …   Medical dictionary

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  • Towne 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 …   Medical dictionary

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  • lateral projection — a radiographic projection in which the central ray enters the body or part from the side and is perpendicular to the medial or axial plane …   Medical dictionary

  • oblique projection — a radiographic projection in which the central ray enters the body or part at an angle to the frontal and medial or axial planes …   Medical dictionary

  • Laurin projection — an axial radiograph of the knees made with the patient seated with the knees flexed at 30 degrees and the lower limbs together; the x ray tube is placed between the patient s feet and the film is placed against the anterior thighs perpendicular… …   Medical dictionary

  • Merchant projection — an axial radiograph of the knees made with the patient supine, knees flexed at 45 degrees over the table end, and lower limbs together; the tube is angled 30 degrees below the horizontal and the film is held on the tibia perpendicular to the beam …   Medical dictionary

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