-GEETASHREE MAJUMDAR
-ASSISTANT PROFESSOR
DEPARTMENT OF RADIOLOGY AND IMAGING
TECHNOLOGY
INTENSIFYING SCREEN

What is intensifying screen?
It is a part of the cassette which converts x-ray
energy into visible light spectrum.It reduces the patient
dose.

CONSTRUCTION OF INTENSIFYING
SCREEN
It consists of base, reflecting surface, phosphor layer,
protective coating.
•Base:This acts as a support for all other layers of
intensifying screen.It is made of polyster plastic and hogh
grade cardboard.
•Reflecting surface:It is also called as absorption surface.It
reflects the light back.It is made of Titenium dioxide.

•Phosphorlayer: This layer absorbs x-ray photons and
converts them to light energy.It is composed of
Calcium Tungestate,Lanthenium oxibromide and
Gadolinium oxisulphide.
•Protective layer:It provides physical protection and
prevents static electricity.It is composed of
Gadolinium, Lanthanium and Yatrium.