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Flashcards in Terms Deck (138)
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1

Direct Search - A, B, C, S

A - Alignment
B - Bone
C - Cartilage (joint space)
S - Soft Tissue

2

Imaging that allows detailed examination of anatomy & abnormalities that are covered by shadows & are inaccessible by conventional radiography

Conventional tomography

3

Imaging is important in assessment of trauma to skull, face, spine, pelvis, hips, & shoulders

Computed tomography

4

Imaging hinges on the selective uptake of certain compounds by different organs of the body. Utilizes the isotope techntium-99m-methylene disphosphate

Bone Scintigraphy AKA Radionuclide bone scan

5

Contrast opacification of joint cavities to evaluate joint disease

Arthrography

6

Introduction of a water-soluble contrast agent into an artery or vein

Angiography

7

Contrast examination of the spine and spinal cord by injection into subarachnoid space

Myelography

8

Placement of water-soluble contrast media into the intervertebral disc under fluoroscopic control

Discography

9

Based on the re-emission of an absorbed radiofrequency while the patient is in a strong magnetic field. Signal is emitted by hydrogen nuclei

MRI

10

This imaging technique produces a fat image in which structures containing fat (bone marrow, subcutaneous fat) appear bright

T1 Weighted image

11

Produces a water image in which substances that contain predominantly free or loosely bound water molecules (neoplasms, edema, inflammation, healthy nucleus pulposus) appear bright whereas substances w/ tightly bound water (ligs, menisici, tendons) appear dark

T2 weighted image

12

Disruption in the continuity of bone

Fracture

13

Complete loss of continuity b/w opposing bones at a joint

Dislocation

14

Partial loss of continuity b/w opposing bones at a joint

Subluxation

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Displacement of a bone in relation to opposing bones in a slightly or synarthrodial joint

Diastasis

16

Most caused by forces acting at a point remote from a site of fracture

Indirect Force

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Type of fracture determined by magnitude of the force

Direct force

18

Discontinuity between 2 or more fragments

Complete fracture

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Skin overlying fracture is intact

Closed fracture

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Skin overlying fracture is disrupted

Open fracture

21

Results in partial discontinuity; portion of cortex remains intact

Incomplete Fracture

22

Owing to compression forces the cortex bulges outward

Torus (Buckling) Fracture

23

Occurs primarily in infants & children under 10yr; bone bends, applying tension to the convex side, producing a transverse fracture w/ the concave side remaining intact

Greenstick (Hickory stick) Fracture

24

Fracture that has more than 2 fragments

Comminuted Fracture

25

Fracture that exhibit the tearing away of a portion of the bone by a forceful muscular or ligamentous pulling. Frequent sites are the tuberosities of tubular bones & the lower cervical spinous process

Avulsion Fracture

26

Fracture occurs when a portion of bone is driven into its adjacent segment because of the compressive forces

Impaction Fracture

27

Type of fracture that is caused by repetitive stress, causing gradual formation of microfractures & eventually an interruption in the bone structure at a greater rate than ca be offset by the reparative process

Stress Fracture

28

A type of stress fracture that is caused by abnormal stress involving normal bone

Fatigue fracture

29

A type of stress fracture caused by normal stress involving abnormal bone

Insufficiency fracture

30

Fracture often associated w/ bone-softening disease such as Paget's rickets, osteomalacia

Pseudofracture