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RADIOGRAPHIC POSITIONING EXAM #1 QUESTIONS WITH COMPLETE ANSWERS
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RADIOGRAPHIC POSITIONING EXAM #1 QUESTIONS WITH COMPLETE ANSWERS
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RADIOGRAPHIC POSITIONING EXAM #1QUESTIONS WITH COMPLETE
ANSWERS
Body habitus - answer-build, physique and general shape of human body
4 general body styles - answer-1. Sthenic
2. Hypothetic
3. Hyperstenic
4. Asthenic
Sthenic - answer--about 50% of population
-considered average
Hyposthenic - answer--about 35% of population
-thin, more slender then sthenic
Hypersthenic - answer--about 5% of population
-large and broad frame compared to sthenic
Asthenic - answer--about 10% of population
-even more slender then sthenic
Impact of body habitus on radiographic positioning? - answer--image receptor
placement needs to be considered
-lengthwise (portrait) or
Crosswise (landscape)
Radiographic positioning - answer-study of patient positioning performed for
radiographic demonstration or visualization of specific body parts on image receptors
(ir)
Radiograph - answer-an image of a patients anatomic parts produced by the action of x-
rays on an image receptor
Radiography - answer-the process and procedures of producing a radiograph
Central ray (cr) - answer-refers to the centermost portion of the x-ray beam emitted from
the tube; the portion of the x-ray beam that has the least divergence
Image receptor (ir) - answer-device that receives the energy of the x-ray bean that exits
the patient and forms the image of the body part
4 types of image receptors - answer-1. Cassette with film
, 2. Image plate (ip)
3. Solid-state detectors
4. Fluoroscopic image receptor
A radiographic exam includes the following 5 general functions: - answer-1. Positioning
the body part and alignment with the image receptor (ir) and central ray (cr)
2..application of radiation protection measures and devices
3. Selection of exposure factors on the control panel
4. Patient instructions related to respiration and inhalation of the exposure
5. Processing of the image receptor (ir)
Anatomic position - answer-patient stands facing you, arms at the side, with the palms
of the hands forward
4 body planes - answer-1. Sagittal
2. Coronal
3. Horizontal (axial)
4. Oblique
Sagittal plane - answer-divides body into left and right
Coronal plane - answer-divides body into front and back
Horizontal (axial) plane - answer-any transverse plane that passes through the body at
right angles to a longitudinal plane, dividing the body into superior and inferior portions
Oblique plane - answer-passes through the body at an angle
Planes of the skull - answer-1. Base plane
2. Occlusal plane
Base plane - answer--transverse plane formed by infraorbital margins to superior
margins of eam
-sometimes called frankfort horizontal plane
Occlusal plane - answer-horizontal plane formed by biting surfaces of upper and lower
teeth with jaws closed
Posterior (dorsal) - answer-back of body
Anterior (ventral) - answer-front of the body
Planter of foot - answer-refers to the sole or posterior surface of the foot
Dorsum of foot - answer-refers to the anterior surface (top) of foot
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