What does Lucencies mean?
Lucency meaning (medicine) A pale area revealed in radiography, computed tomography, or similar examination technique.
What are air Lucencies?
Answer. Using an X-ray result to illustrate the point, the term ‘lucency’ is a technical term for an area that lets X-rays through the tissue and as a result appears darker on the picture. A denser part is able to absorb more X-radiation and therefore appear lighter on the radiograph.
What does lucency mean on an xray?
Lucency: This is the exact opposite of density. As x-rays pass through less dense regions like air-filled lungs, it appears as darker areas on the x-ray image. To a radiologist, lucency can be abnormal when there is too much of it and if it’s in an atypical location.
What is a curvilinear lucency?
Curvilinear lucency outlines the left cardiac border suggestive of pneumopericardium. In addition, there are some linear lucencies extending to the cervical region compatible with subcutaneous emphysema. No confluent consolidation or atelectasis. Heart size and cardiomediastinal contour are normal.
Is lucency a fracture?
The lucency overlying the distal radius, under careful examination, is seen to extend OUTSIDE of the bone into the soft tissues (green arrows). This is a skin fold that projects over the bone but is NOT a fracture.
What is a linear lucency?
Radiography is sensitive in the diagnosis of acute fractures. An acute fracture is seen as a linear lucency and a break in the cortical surface. Nondisplaced, impacted fractures may appear as an opaque line; such fractures may be confirmed on a different view.
Does lucency indicate fracture?
If bone fragments are displaced as a result of a fracture, the X-ray beam will not be absorbed by the bone at the fracture site (= the gap) (fig. 1a). This is visible as a lucent line (= black line). Bone fragments may also be compressed (= impacted fracture), causing overlap of bone structures (fig.
What is a cortical lucency?
In its typical location in the diaphysis of a long bone, it usually presents on radiographs and CT as a cortically based lucent lesion surrounded by sclerosis and reactive focal cortical thickening. 1. The lucency — or nidus — consists of highly vascular, cellular elements that produce an osteoid matrix.
What does linear lucency mean?
An acute fracture is seen as a linear lucency and a break in the cortical surface. Nondisplaced, impacted fractures may appear as an opaque line; such fractures may be confirmed on a different view.
What does lucency around a screw mean?
Lucency around a screw was defined as a 1mm or greater radiolucent halo surrounding a pedicle screw. All radiographic assessments were made by the senior author.