1 Human Anatomy/Yogesh Sontakke
,INTRODUCTION
The study of anatomy by using X-rays is
referred to as Radiological Anatomy.
Radiology is the branch of science that deals
with the use of radiant energy in the diagnosis
and treatment of disease.
Itwas discovered by Wilhelm Conrad
Roentgen in 1895.
, Properties of X-rays
1. Penetrating effect:
Substances of lower atomic weight transmit the rays, whereas those with higher a
weight absorb the X-rays.
Such property has been used to identify the shadows of the organs.
Calcium rich tissues like bone cast a white shadow.
The soft tissues ( like muscles, fascia, vessels, nerves, tendons, ligaments, etc.) absorb
partially to give an image of varying gray scale.
Substances like fat and air do not absorb any X-rays and give a totally black sh
2. Photographic effect:
The X-rays affect the chemical (bromium salt) which is applied as an emulsion on th
film.
When the film is exposed to the X-rays, the radiolucent parts appear dark (black)
the reaction between X-rays and the bromiun salt.
Radio opaque parts appear white as there is no reaction between emulsion and X-r
emulsion is washed out without any reaction.
The film which is developed after the exposure to X-rays by passing through the body i
SKIAGRAM (skia= shadow, gramma= writing) or RADIOGRAM and the pro
done to obtain the radiogram is called RADIOGRAPHY.
,INTRODUCTION
The study of anatomy by using X-rays is
referred to as Radiological Anatomy.
Radiology is the branch of science that deals
with the use of radiant energy in the diagnosis
and treatment of disease.
Itwas discovered by Wilhelm Conrad
Roentgen in 1895.
, Properties of X-rays
1. Penetrating effect:
Substances of lower atomic weight transmit the rays, whereas those with higher a
weight absorb the X-rays.
Such property has been used to identify the shadows of the organs.
Calcium rich tissues like bone cast a white shadow.
The soft tissues ( like muscles, fascia, vessels, nerves, tendons, ligaments, etc.) absorb
partially to give an image of varying gray scale.
Substances like fat and air do not absorb any X-rays and give a totally black sh
2. Photographic effect:
The X-rays affect the chemical (bromium salt) which is applied as an emulsion on th
film.
When the film is exposed to the X-rays, the radiolucent parts appear dark (black)
the reaction between X-rays and the bromiun salt.
Radio opaque parts appear white as there is no reaction between emulsion and X-r
emulsion is washed out without any reaction.
The film which is developed after the exposure to X-rays by passing through the body i
SKIAGRAM (skia= shadow, gramma= writing) or RADIOGRAM and the pro
done to obtain the radiogram is called RADIOGRAPHY.
