1. X-Ray

X-Ray
·
X-rays
energy
form of electromagnetic
formed when high speed
are
electrons
anode
·
a
bombard
a
tungsten
target.
much shorter
X-rays have
wavelength, allowing them to penetrate
a
matter.
Interaction
·
Manner
with
in
X-rays with matter
of
which
X-ray
body tissues:
(a)
Compton effect
(b)
Photoelectric effect
(c)
Coherentscattering
1)
Les
beam interact
Photo-disintegration
Pair production.
Mostcommon
Five basic
Radiographic Densities:
BrightWhite
ic
Metal-
(ii)
Mineral-White
iii)
Fluid)Soft Tissue
in
Fat-Dark gray
is
Air.
Black
-
Gray
ChestX-Rays:
The
chest
is
[ough
ii)
Dyspnea
iii)
Chest
X-ray is the bestinitial radiological
forms of pulmonary complaints as:
·
pain
sputum
iv
for all
hemoptysis.
or
1)
Chestwall
tenderness
vis
Dullness
to percession
viii
Twacheal deviation
Superior Venacava syndrome
Possible
(viii)
tests
Abdominal X-rays:
X-ray has very few indications.
Ilews or small bowel
The bestindication is
Abdominal
·
·
·
Abdominal
&
·
will
Also
·
·
miss
not
Bone
X-ray
notaccurate
for
stones
of kidney
at least20% ofcases.
reliably find air
under the
diaphragm.
X-ray:
Best
initial
Skull
X-ray:
No
is
obstruction.
testfor
First-class
initial
or
osteomyelitis.
indication,
mostaccurate
skull
testfor
x-ray
is not
best
anything.