CULTURE
CUSHING'S SYNDROME
CT SCANNING
Contro
panel
or swallowed contrast media (chemicals
opaque to X-rays) may be used to make
certain tissues more visible.
culture
A growth of bacteria or other
microorganisms, cells, or tissues culti-
vated artificially in the laboratory.
Microorganisms are collected from the
site of an infection and cultured to pro-
duce adequate amounts so that tests to
identy them can be performed. Cells may
be cultured to diagnose disorders pre-
natally and for study of chromosomes
(see
chromosome analysis).
Some tis-
sues, such as skin, may be cultured to
produce larger amounts for grafting.
cupping
An ancient form of treatment,
still used in folk healing in some coun-
tries, which draws blood to the surface
by applying a small heated vessel to the
skin. The inflammatory response pro-
duced is believed to help in
bronchitis,
asthma,
and musculoskeletal pains.
curare
An extract from the bark and
juices of various trees that has been
used for centuries by South American
Indians as an arrow poison. Curare kills
by causing muscle
paralysis.
Synthetic
compounds related to curare are used to
produce paralysis during surgery.
cure
To restore to normal health after an
illness. The term usually means the dis-
appearance of a disease rather than a halt
in its progress. Medication or therapy that
ends an illness may also be termed a cure.
curettage
The use of a sharp-edged,
spoon-shaped surgical instrument called
a
curette
to scrape abnormal tissue, or
tissue for analysis, from the lining of a
body cavity or from the skin.
curettage, dental
The scraping of the
wall of a cavity or other surface with a
dental
curette
. Dental curettage is one
method used to remove the lining of
periodontal pockets and diseased tis-
sue from root surfaces in
periodontitis.
curette
A spoon-shaped surgical instru-
ment for scraping away material or
tissue from an organ, cavity, or surface.
Curling's ulcer
A type of
stress ulcer
that occurs specifically in people who
have suffered extensive skin burns.
Cushing's syndrome
A hormonal dis-
order caused by an abnormally high
level of
corticosteroid hormones
in the
blood. Cushing's syndrome is character-
ized by a red moon-shaped face, wasting
of the limbs, thickening of the trunk, and
a humped upper back. Other symptoms
X-ray beam
X-ray detector
rotates to remain
opposite X-ray
source
l
CT scanner tilts forwards
and backwards
X-ray source
generates a beam
of X-rays and
rotates around
body
Direction of
rotation of
X-ray source
Motorized bed
moves forwards
after each scan
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