**5. Conclusion**

The aim of this chapter is concerned with TLD materials, measurements and recent various applications in clinical and industrial fields. TL kinetics are also covered in details due to their importance in knowing traps parameters and band structurerelated phenomena that are responsible for TL phenomena. Modern clinical applications of TLD are also covered like quality assurance purposes for proton, x-ray and gamma radiotherapy based on phantom tests. In addition, we shed spot on using TLD for recent accurate methods for skin dose evaluation under IMRT/VMAT radiotherapy. Special attention should be oriented to hybrid-functional density theory Monte Carlo simulation to model TL dosimeters. Recent studies proved a promising tool for localizing secondary electrons within a dosimeter volume and calculating the energy spent on creating defects or colors centers, among other things, when it comes to the relationship between the energy deposited and the response of a dosimeter. Such methods could give knowledge about misunderstanding behaviors of some TLD and could eliminate its disadvantages like missing TL signal or fading; angle and energy of incidence ionizing radiation. In general, the properties of TLD like its inexpensive cost and reusability; easily fabricated, lightweight to wear, readout is simple and can be automated, insensitive to humidity make it advantageous in different clinical and radiation safety applications.

*Dosimetry*
