A helical scan is a computed tomography (CT) imaging method where the X-ray source and detector rotate continuously around the object while the object moves linearly. This combined motion generates a helical (spiral) data acquisition path.
Unlike conventional step-and-shoot methods, helical scanning allows for continuous, high-speed data acquisition. It is widely used in medical applications and is increasingly adopted in industrial inspection to image long objects that exceed the detector's vertical field of view.
Related Technical Articles
- What are X-rays? (Basic Knowledge)
- Selecting an X-ray Inspection System
- Non-Destructive Testing: Types and Applications
- How to Acquire High-Quality Computed Tomography (CT) Images - X-ray NDT series (1)
- A Guide to X-ray CT Images: Formats, Viewing, and Applications - X-ray NDT series (2)
- X-ray Image Processing and Automated Inspection - X-ray NDT series (3)
- Types of X-ray Tubes and High-voltage Power Supplies
- Principles of Radiography
- Safe Operation of X-ray Inspection Systems
- What is Microfocus X-ray Technology? (Basic Knowledge)
- Understanding Radiation: Effects on the Body and X-ray Safety
- What is the difference between Radioactivity, Radiation, and Radioactive Materials?