Selective Detection of Scatter Field Velocity Components for Improved Radiography

Technology #12688

Uses Preferential Selection in Scatter X-ray Fields for Improved Image Quality by Detector Collimators

These modified collimated radiation detectors, which narrow beams of radiation, use radiography by selective detection to identify scatter field velocity components in Compton backscatter X-ray imaging. This scanner imaging device for computed imaging backscatter radiography improves X-ray backscatter imaging and identifies defects in materials, containers, and organs within the human body. The global digital X-ray market is expected to grow to $10 billion by 2020. Available Compton backscatter imaging systems can be divided into two classes, each with limitations. Class 1 is inefficient in sensing the scatter field and slow to acquire images. Class 2 devices have fast image acquisition but record scattering without discrimination, often obscuring the internal structural detail of the desired target.

Researchers at the University of Florida have developed a radiation detector that uses the scattering detected in an X-ray field to enhance image contrast and internal structural detail in Compton backscatter imaging systems. In some cases, the preferential selection of scatter X-ray field components allows objects that are not visible in conventional Compton backscatter images to become viewable. This device can be useful in the fields of medical imaging, law enforcement and Homeland Security.


Enhances radiography image quality produced by detector collimators while increasing speed of image acquisition


  • Modifies detector collimators, improving quality of X-ray backscatter imaging
  • Increases speed of X-ray image acquisition, reducing unnecessary scattering that obscures X-ray image detail
  • Detects hidden objects in materials and structures, improving Homeland Security and law enforcement efforts


This imaging device uses X-rays to image subsurface features and is capable of scanning a region using a fan beam aperture and gathering data using rotational motion. It allows independent motion in different directions including rotation, in-and-out movement of the outer circular collimator only, and in-and-out movement of the collimator assembly as a unit, which enables the image to be focused by selection of the desired scatter field components. An X-ray backscatter system uses radiography by selective detection and then scans an object.