A tungsten sheet includes a tungsten layer. The tungsten layer includes a binder resin and a plurality of tungsten particles included in the binder resin. A tungsten composition amount of the tungsten layer is at least 70% by mass (wt %). An average particle diameter of the plurality of tungsten particles is more than 1 m and less than 15 m.

A computational method for development of radiation shielding compositions, as described herein, can include selecting at least one polymer and at least one metal for each of a plurality of radiation shielding compositions, selecting a polymer:metal ratio for each composition, performing computational analysis to calculate an attenuation coefficient associated with a given radiation dose for each composition, identifying a best candidate composition for radiation shielding based on the calculated attenuation coefficients, and preparing a radiation shielding material including the at least one polymer, the at least one metal, and the polymer metal ratio associated with the best candidate composition.

A radiation scatter protection system designed to attach to an X-ray table to limit exposure to radiation for both medical staff and patient. The radiation scatter protection system includes an arm board adapted to be disposed around an arm of the patient; an arm board shielding including one large sheet of shielding extending downward from the X-ray table and a plurality of additional sheets of shielding, removably mounted to the arm board; a sand bag shield including a plurality of sheets of top shielding and a plurality of sheets of bottom shielding which connect to an elongated, cylindrical sandbag; a side curtain shield hanging from the X-ray table; and a throw shield.

A radiation shielding material that is lighter and has lower installation restrictions than conventional methods, and that exhibits excellent shielding efficiency against radiation in the high energy region. The radiation shielding material comprises a complex containing a fibrous nanocarbon material, a primary radiation shielding particle, and a binder, wherein the fibrous nanocarbon material and the primary radiation shielding particle are dispersed in the binder.

The present application provides a preparation method for a core-shell structured tungsten/gadolinium oxide functional fiber for X and ? ray protection, comprising: first preparing a core-shell structured tungsten/gadolinium oxide powder; preparing a W@Gd.sub.2O.sub.3/PP blended melt from the powder; and preparing a W@Gd.sub.2O.sub.3/PP composite fiber from the blended melt. The core-shell structured tungsten/gadolinium oxide functional fiber prepared by the method can play a role in synergistic protection in the aspect of radiation protection, eliminate a weak protection area, and effectively absorb secondary radiation generated by radiation. Secondly, the prepared functional fiber has the characteristics of no lead and light weight, and has good application prospects in the aspect of X and ? ray radiation protection.

The invention concerns a radiation protective material, which comprises a fibrous material with composite filaments including a radiopaque substance. The filaments are structured in a regular pattern to form the radiation shielding material.

Alpha/beta radiation barrier materials and structures formed to include the barrier materials are described. Barrier materials include a matrix and particulate materials contained in the matrix. The particulates include alpha/beta radiation absorbers. Alpha/beta radiation absorbers of the barrier materials can be molecular, particulates, or defined nanostructures that are capable of absorbing incident alpha/beta particle energies. Matrix materials can include organic or inorganic materials including thermoplastic polymers, thermoset polymers, glasses, ceramics, etc.

A high-pass radiation shield for using during radiological examinations is provided. The shield comprises: a first sublayer having a first radiation attenuation material of atomic number from 21 to 30; and a second sublayer having a second radiation attenuation material of atomic number 56 or greater. The weight of the second radiation attenuation material is not greater than the weight of the first radiation attenuation material. The shield is configured for placement on a patient's body over the entire or a portion of the field of view (FOV) for protection of the organs, especially radiosensitive organs against radiation dangers emitted by an X-ray tube without degrading image quality.

An eye mask apparatus for protecting a patient's eyes while being secured around the patient's head during panoramic dental radiography, the apparatus comprising an elongated lead vinyl sheet having a first end and a second end, wherein said first and second ends have attachment devices to releasably secure said two ends together. The elongated lead vinyl sheet is adapted to be secured around the patient's head at eye level. The elongated lead vinyl sheet is further adapted to cover a slice of the patient's head that is confined between two planes, the two planes being parallel to a transverse plane of the patient's head at eye level. Therefore, the eye mask apparatus protects the slice of the patient's head and the patient's eyes from x-ray radiation during the panoramic dental radiography. The lead vinyl sheet is placed over the patient's eyes prior to radiography.

An XRF analyzer can include an x-ray source and an x-ray detector; an x-ray source heat-sink adjacent a side of the x-ray source; and an x-ray detector heat-sink adjacent a side of the x-ray detector. In one embodiment, the x-ray source heat-sink can be separated from the x-ray detector heat sink by a material having a thermal conductivity of less than 20 W/(m*K). In another embodiment, the x-ray source heat-sink can be separated from the x-ray detector heat sink by at least 3 millimeters of a thermally insulating material. In one embodiment, the x-ray source heat-sink can be separated from the x-ray detector heat sink by a segment of the engine component casing. Separation of the heat sinks can help avoid heat from the x-ray source adversely affecting resolution of the x-ray detector.