Published on 20-Mar-2024

Radiographic Films: Basics, Types & Applications

Radiographic Films: Basics, Types & Applications

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Table of Content

Radiographic films serve as indispensable tools in various fields, particularly medicine, and industry, for capturing images produced by the passage of X-rays or gamma rays through objects. These films play a vital role in medical imaging, allowing healthcare professionals to diagnose and treat various medical conditions by visualising internal structures.

Basics of Radiographic Films

Basics of Radiographic Films

Radiographic films are sensitive to X-rays and gamma rays, producing images that can be used for diagnostic purposes in medicine and industry. These films are typically composed of a base material coated with emulsion layers containing silver halide crystals.

Composition and Structure

Radiographic films usually have a base layer made of polyester or cellulose and are covered with an emulsion that has silver halide crystals mixed in with gelatin. Upon exposure to radiation, these crystals undergo chemical changes, forming latent images.

Sensitivity to Radiation

The sensitivity of radiographic films varies based on factors such as emulsion thickness and grain size. Higher sensitivity films require shorter exposure times, facilitating rapid imaging processes.

What are the Types of Radiographic Films?

Radiographic films can be categorised based on various characteristics:

1. Conventional Films