Polymer Tungsten Shielding Composites

Polymer-tungsten can be applied for X-ray shielding as a reliable substitute material for lead. The lamination order of tungsten film and sendust composite film affects the final performance of the laminated composites.Polymer-tungsten shielding composites had been studied the effects of multilayer structure on X-ray shielding ability. Though the metals were nonleaded, the metal contents were low, and the composite films were thin, the composite films showed favorable X-ray shielding ability due to the uniform dispersion of metal particles in the polymer matrix and the flake alignment of tungsten. This means that multi-layered particles can effectively absorb the penetrating photons and they fill the pin holes in the composite. More uniformly aligned tungsten shows better shielding effect than randomly oriented lead.

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Tungsten Radiation Collimators Classification

There two kinds of tungsten radiation collimators classifications, tungsten panoramic collimators and tungsten directional collimators. Collimators contain and direct the beam of radiation during exposure. This results in improved radiograph quality and safer operating conditions. Tungsten panoramic collimators consist of a stainless steel housing containing two tungsten inserts. Tungsten directional collimators direct the radiation beam from a side port as a 60° conical side throw. A wide range of collimators have been developed to meet the variety of applications and techniques used.

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Gamma Camera Tungsten Parallel Collimator

Gamma camera tungsten parallelcollimator is a thick plate of tungsten riddled with a large number of very thin parallel channels. The gamma rays which can pass through it are those whose direction is perpendicular to the surface of the tungsten plate and the scintillating crystal. The channel axes point towards the body part under examination, and the tungsten stops all gamma photons traveling at an oblique angle. Other collimators can be designed using different techniques: a pinhole collimator is used for thyroid scintigraphy scans, whereas fan-shaped collimators are used for imaging of the brain.

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Nuclear Medicine Tungsten Radiation Shielding Application

Tungsten alloy has excellent radiation attenuation properties, with thinner thickness but high effective in blocking harmful X-ray and gamma radiation. Tungsten alloy shielding is the best choice in nuclear medicine. Nuclear medicine tungsten radiation shielding is usually used in the nuclear medical equipment, such as collimator, linear accelerator, multileaf collimator,computed tomography,X-ray energy, absorptiometry, and gamma knife.

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