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23 Cards in this Set
- Front
- Back
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Define and give an example-Radiolucent
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Dark or black on film.
Lung is more radiolucent than bone. |
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Define and give an example- Radiopaque
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Light or white on film.
Water is more radiopaque than fat. |
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Define- Contrast
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The differance between adjacent densities.
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Define and give an example- Tissue Density
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A product of the type of tissue and the thickness of that tissue.
Bone has more tissue density than muscle. |
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Define- Radiographic Density
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A term applied to the overall "blackness" of the film. This is a technical factor descriptor and not an anatomical descriptor.
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Name 5 common densities from Radiolucent to Rediopaque
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Air (Black)
Fat Water Bone Metal (White) |
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Define and give an example- Apophyses
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Osseous projections from the general shape of the bone.
Tuberosities and Tubercles |
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Define- Epiphysis
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The articular end of the bone that is separated from the rest of the bone by physis (growth plate).
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Define- Metaphysis
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The tapering portion between the physis and the shaft.
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Define- Diaphysis
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The shaft of bone.
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Name the 4 categories of bones
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Flat bones
Short/Square bones Sesamoid bones Long/Tubular bones |
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Define- Periosteum
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The fiberous outer layer of bone. NOT distinguishable on a radiograph.
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Define- Spongy/Cancellous bone
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The network of trabeculae in the medullary portion of bone. (will appear as lines)
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Define- Compact bone/Cortex
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Outer shell of bone.
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Define- Superimposition
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Is affected by anatomical relationships but NOT affected by the order (AP vs PA) that the film is shot.
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Define- Central Ray
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Simpily the center portion of the beam.
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When reviewing films- What does ABCS stand for?
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Alignment
Bones Cartilage Soft tissues |
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What is the rule of 2s and 6s?
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At C2, 6mm
At C6, 22mm |
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Define- McGregor's Line
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Posterior-Superior margin of hard palate to inferior-most surface of the occiput.
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Two Oblique shots that show the LEFT IVF
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RPO
LAO |
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Two Oblique shots that show the RIGHT IVF
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RAO
LPO |
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5 Cervical Line
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Prevertebral Tissue
Anterior Body Line Posterior Body Line Spinolaminar Junction Line Spinous Process Interspacing |
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Where is the atlantodental space?
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Between the posterior aspect of C1 anterior tubercle and the anterior aspect of odontoid process.
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