Introduction to x-rays and x-ray tube

Engr Khaleeque AhmedSir syed university of engineering &

technology Karachi

10-1 to 10 nm

400 to 700 nm

10-4 to 10 -1 nm

10 to 400 nm

700 to 104 nm

X-ray radiation was discovered by

Roentgen in 1895.

X-rays are generated by bombarding

electrons on an metallic anode

Emitted X-ray has a characteristic

wavelength depending upon which

metal is present.

NMR

10 um - 10 mm

X-rays: a form of electromagnetic energy

Travel at the speed of light

Electromagnetic spectrum

Gamma Rays X-rays

Visible light Infrared light

Microwaves Radar

Radio waves

X-rays radiations are created by taking energy from

electrons & converting into photons

This energy conversion takes place within the x ray

tube

The x-radiation produced can be controlled by

adjusting the electrical quantity(KV,mA)

X-rays can:

Pass all the way through the body

Be deflected or scattered

Be absorbed

Where on this image

have x-rays passed

through the body

to the greatest degree?

This is a modern rotating anode x-ray tube. It is encased completely in a metal protective housing.

There are two principle parts:

• The rotating anode

• The cathode

It’s a energy converter Receive energy and converted into two other form that is heat and x radiations

These are designed because of massive prodution of x rays

Quick and painless

Can help diagnose

various diseases and

injuries, including

broken bones, cancer

and infections

Very small increased risk

of cancer in future from

exposure to ionising

radiation(x-rays).

Risk is greater for

children