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RAD 110 P&P
Positioning and Projections
| Question | Answer |
|---|---|
| Position | Posture or body position of the patient (erect, recumbent) or body in relation to IR |
| Position | Overall posture of the patient or general body position |
| Projection | Path of central ray (ex: AP, PA), or the relationship formed between the central ray and the body as the CR passes through the body (ex: AP axial, PA oblique, etc.) |
| Projection | Identified by the entrance and exit points of the body |
| Erect | Standing |
| Seated | upright, but sitting on a stool |
| Lordotic | upper body leaning backward |
| Recumbent | lying down |
| Supine | lying on the back |
| Prone | lying face down |
| Trendelenburg’s position | Head lower than the feet |
| Fowler’s position | Head above feet |
| Sims’ position | Prone but lying on an anterior side with that leg extended and the other knee and thigh partially flexed |
| Lithotomy position | Supine with knees and hips flexed and thighs abducted and rotated externally, supported by ankle supports |
| Lateral Positions | Named according to the side of the patient that is placed closer to the IR |
| Oblique position | Body is rotated so that the coronal plane is not parallel with the table or IR, Angle of rotation is specific for anatomy of interest |
| Oblique position | Named according to side and surface of body closer to table or IR Abbreviations: RPO, LPO, RAO, and LAO |
| Oblique position | Body forms an angle with the IR |
| Decubitus Position | The ONLY position that also includes CR orientation, named by side touching TABLE |
| Decubitus Position Requirements | Patient is recumbent |
| 3 Basic Projections | AP, PA, and Lateral |
| AP Projection | CR enters the anterior surface and exits the posterior |
| PA Projection | CR enters the posterior surface and exits the anterior |
| Lateral Projection | CR enters one side of the body, passing transversely along the coronal plane |
| Oblique Projection | CR enters at an angle to the body, named by how the CR passes through the body (e.g., AP oblique) |
| Axial Projection | Longitudinal angle of the CR of 10 degrees or more |
| Lordotic Projection | CR passes through the body when the body is curved |
| Tangential Projection | CR skims a surface – usually curved |
| Decubitus Position Requirements | Central Ray is horizontal (cross table) |
Created by:
user-2016295