posteroanterior (PA) projection

posteroanterior (PA) projection
a radiographic projection in which the central ray goes from the back to the front of the body, with the film at the front.

Medical dictionary. 2011.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

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  • posteroanterior — A term denoting the direction of view or progression, from posterior to anterior, through a part. * * * pos·tero·an·te·ri·or .päs tə rō an tir ē ər adj involving or produced in a direction from the back toward the front (as of the body or an… …   Medical dictionary

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  • Caldwell projection — a posteroanterior projection of the head, used for viewing the frontal and anterior ethmoidal sinuses; the central ray enters the back of the head from a slightly superior angle …   Medical dictionary

  • frontal projection — a radiographic projection in which the central ray is perpendicular to the frontal plane; it may be either anteroposterior or posteroanterior …   Medical dictionary

  • 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's projection — a posteroanterior X ray film to show the entire skull and mandible. E. B. Towne (1883 1957), US otolaryngologist …   Medical dictionary

  • Waters' projection — a posteroanterior X ray film to show the maxillae, maxillary sinuses, and zygomatic bones. C. A. Waters (1888 1961), US radiologist …   Medical dictionary

  • Towne's projection — a posteroanterior X ray film to show the entire skull and mandible [B. Towne (1883–1957), US otolaryngologist] …   The new mediacal dictionary

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