Gamma Radiography works the same way as x-rays . However, to produce effective gamma rays only a small pellet of radioactive material sealed in a titanium capsule is needed, instead of a bulky x-ray producing machine.

As isotopes are easily transported, gamma radiography is very useful in remote areas where it can be used to check for defects in wields in pipelines carrying gas or oil. An advantage using gamma radiography is that no power is required and thus eliminates the need of x-ray sets, which require power to operate which may not be readily available at a remote site