fan beam


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fan beam

a geometric pattern produced by collimating a spatially extended x-ray beam with a long, narrow slit. Also called fan x-ray beam.
References in periodicals archive ?
Therefore, they are replaced by more recent, advanced radiographic methods, such as computed tomography, (cone beam computed tomography--CBCT and fan beam computed tomography--FBCT), as well as digital volume tomography (DVT).
With its sound technological expertise and vast experience, GE has leveraged its nondestructive testing technology by implementing its unique scatter | correct technology into CT systems that combine the high precision of a fan beam CT system with the up to 100 times increased throughput of cone beam CT inspection," said Frost & Sullivan Industry Analyst Mariano Kimbara.
The systems will feature pencil-beam scanning and will be outfitted with CBCT and Fan Beam CT imaging technology along with an advanced workflow system.
64-slice fan beam true CT imaging for diagnostic image quality
As the tungsten blades of a collimator, located just beneath the X-ray tube, move from side to side, so the X-ray fan beam sweeps back and forth.
As the product is transported along the conveyor, it passes through the X-ray fan beam and absorbs some of the x-rays.
An analysis of the integral kernels for two well-known fan beam CT reconstruction algorithms has been performed.
In a typical application, a panoramic x-ray source that emits a fan beam of x-rays in an angle >180[degrees] is inserted inside of the tire under inspection and aligned with the internal collimator aperture opening.
The thickness of the fan beam may be as small as 1 millimeter or as large as 10 millimeters.
With synchrotron radiation, the DEI method employs a single-energy fan beam of X-rays instead of the broad-energy beam of conventional radiography.
The Elpar reflector has an elliptical shape in elevation and a parabolic shape in azimuth, which produces a vertically oriented fan beam.
In rating TomoTherapy, MD Buyline wrote, "TomoTherapy is the only vendor for the CT-based linear accelerator which delivers radiation dose in a helical or fan beam fashion.