What is the difference between high energy photons and low energy photons?

High energy photons, such as X-rays, possess sufficient energy to penetrate through various tissues in the body, making them useful for diagnostic imaging. Their ability to pass through dense tissues, such as bone, while being absorbed by softer tissues allows dental professionals to effectively capture clear images of the dental structure.

In contrast, low energy photons do not have enough energy to penetrate these tissues effectively. Instead of passing through, low energy photons are more likely to be absorbed by those tissues or scattered. This is significant in radiography, as higher energy photons provide clearer images and better diagnostic information, while lower energy photons contribute to unnecessary radiation dose without adding value to the imaging process.

The distinction between high and low energy photons is crucial in selecting appropriate imaging techniques and ensuring patient safety by minimizing exposure to ineffective radiation.