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Bontrager.

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Sagittal Plane   Divides right and left  
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Coronal Plane   Anterior and posterior  
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Horizontal (axial) plane   superior and inferior parts  
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Oblique Plane   NOT parallel to any other plane, it is at an angle or a slant.  
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Occlusal plane   Horizontal plane formed by biting surfaces of the upper and lower teeth with jaws closed.  
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Positions differ from projections in that..   Positions refer to what is closest to the image receptor, or where the central ray is exiting.  
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Prone   Lying on abdomen, facing downward  
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Trendelenburg   Recumbent position with head lower than feet  
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Fowlers   Recumbent with head higher than feet  
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Sims   Recumbent oblique position with pt lying on left anterior side, right knee and thigh flexed.  
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Lateral   side or side view. Part closest to the IR or part from which CR exits. Lateral is at a 90 angle.  
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Oblique   angled person. Part closest to the IR or CR exits.  
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Supine   Laying on back, facing up  
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LPO. Describe position.   Left posterior oblique. Person is standing with left shoulder to IR facing/angled towards the CR. (left backside of shoulder to IR)  
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RAO. Describe position.   Right anterior oblique. Person is standing with right shoulder to IR, facing/angled to the IR.  
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Decubitus   Lying on a horizontal surface. Central Ray is ALWAYS horizontal. Used for detecting air-fluid levels.  
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Right lateral decubitus position, with a PA projection.   Pt lies on their right side, anterior closest to IR. "Right lateral decubitus position (PA projection)"  
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Left lateral decubitus position, with a AP projection.   Pt lies on left side, posterior closest to IR. "Left lateral decubitus position (AP Projection)"  
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Ventral decubitus position, right lateral.   Pt lying on anterior/ventral side, with right side closest to IR. "ventral decubitus position (R lateral)"  
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Dorsal decubitus position, left lateral.   Pt is lying on back, left side is closest to IR. "dorsal decubitus position (L lateral)"  
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Dorsal decubitus position, right lateral.   Pt is lying on back, right side closest to IR. "dorsal decubitus position (R lateral)"  
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Ventral decubitus position, left lateral.   Pt lying on anterior, left side is closest to IR. "ventral decubitus position (L lateral)"  
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Axial projection   Angle of the CR of 10 degrees or more along the long axis of the body or body part.  
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Inferosuperior axial projection   CR enters below/inferiorly and exits above/superiorly. -Frequently performed for the shoulder and hip.  
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Superoinferior axial projection   CR eneters superiorly and exits inferiorly. -may be used for a nasal bone projection  
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Tangential projection   Skims a body part to project that part into profile and away from other body structures, -Knee is common.  
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AP axial projection-lordotic position. Describe.   Posterior to the IR, shoulders back and lower/middle back pushed forward. The patients long axis of the body is angled, not the CR. -Specific AP chest projection for the apices of the lungs.  
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Transthoracic projection   For the humerus. Going through chest (laterally) to get image on opposite side.  
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Parietoacanthial/Acanthioparietal projections   CR enters the parietal bone and exits at the acanthion (junction of nose and upper lip).  
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Submentovertex (SMV) / Verticosubmental (VSM) projections   CR enters below the chin/mentum, exits at the vertex/top of skull. -Used for skull and mandible.  
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Valgus   Ankles bent in, feet are turned out  
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Varus   Ankles bent out, feet turned in.  
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Invert/inversion   Feet turned in, "pigeon toed"  
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