2013年9月29日星期日

Tungsten Medical Shielding

Tungsten alloy is ideal for shielding against X rays and gamma radiation. The very high density of tungsten shielding (more than 60% denser than lead) allows a reduction in the physical size of shielding components, without compromising their rigidity or the effectiveness of the shielding characteristics.

Tungsten heavy alloy shielding is used in applications such as collimator, nuclear shielding, beam stop,  syringe shield, vial shield, isotope container, FDG container, multi leaf collimator etc.

Positron emission tomography  is one of the nuclear medicine techniques available for diagnosis. Whilst X-rays provide information on the structure of the body, it shows the chemical function of a particular organism.  As the
travels through the patient’s body it emits gamma radiation which is detected by a gamma camera, from which the chemical activity within cells and organs can be seen. Any abnormal chemical activity may be a sign that tumours are present.

Radiotherapy destroys cancer by directing beams of radiation directly onto the tumour. The beams of radiation require a very fine focus to avoid harming the surrounding healthy tissue. This focus is achieved by using a multi-leaf collimator, consisting of two rows of very thin tungsten alloy plates, which can be configured to exactly match the dimensions of the tumour.

Tungsten Alloy Syringe Shield

Staff preparing and injecting radiopharmaceuticals in hospitals may receive significant radiation doses to their hands. These doses may be high enough to warrant that they be classified as radiation workers. The influence of local shielding on finger doses has been investigated. Staff preparing radioactive liquids in a radionuclide dispensary and drawing up and injecting radiopharmaceuticals in a nuclear medicine department have been studied.

The Tungsten Alloy Syringe Shield magnetically docks with the ChinaTungsten
Dispensing Pig. Designed to accept 3cc, 5cc and 10cc B-D syringes, it places the needle inside the vial septum when engaged. The body of the shield is constructed of solid tungsten 2.1cm thick for maximum shielding. The external calibration rod allows the precise volume to be withdrawn without a leaded glass viewing port, where high exposure levels cannot be adequately shielded. The system allows the plunger to be pulled back with a pair of forceps, allowing you to keep your exposure as low as reasonably achievable.

Product Description

High strength tungsten carbide
   
The daily operation bumps will not affect the shape of the pot and protection ability
   
Solid tungsten walls 2.25cm thick
   
Weighs only 15.6lbs.
   
The "T" handle on the cap allows the unit to be easily lifted out of traditional "ammo can" delivery cases.
   
The threaded top provides easy access to the 3 or 5 or 10cc syringe.
   
The use of the thermos style handle reduces hand exposure by permitting to be carried to the imaging suite without holding container sidewalls.
   
Prior to injection, the base unscrews, allowing the centre portion to be used as a syringe shield.
   
When placed in the optional Cradle, patient administrations can be performed with ease and maximum shielding.

Advantages Of Tungsten Alloy Radiation Shielding

Compared to traditional radiation shielding materials, tungsten alloys provide excellent value. A high-density alloy can provide the same energy absorption as lead using 1/3 less material! Unlike lead, you’ll also reduce administration costs by eliminating the need to obtain special licensing—it’s not required.

Experts find that radiation exposure could be reduced by maxing shielding. The density of a material is related to its radiation stopping ability. Higher density means better stopping power and shielding. Due to a higher density, tungsten alloy has a much higher stopping power than lead. It is greater linear attenuation of gamma radiations means that less is required for equal shielding. Alternatively equal amounts of tungsten alloy shielding provide diminished exposure risks than equivalent lead shielding.

Tungsten alloy is a suitable raw material for radiation protection, as its combination of radiographic density (more than 60% denser than lead), machinability, good corrosion resistance, high radiation absorption (superior to lead), simplified life cycle and high strength. It can provide the same degree of protection as lead whilst significantly reducing the overall volume and thickness of shields and containers. Besides, compared with lead or depleted uranium in the past, tungsten alloy is more acceptable in this case, for they are non-toxic.

Tungsten Alloy Radiation Container

Tungsten alloy is used in many radiation-shielding applications including industrial, nuclear and medical. Because of its high density and high atomic number, is an effective construction material for shielding against gamma rays and x-rays. Lead and boron carbide can shield radiation too, but cannot perform as well as tungsten alloy.

Tungsten alloy is used in many radiation-shielding applications including industrial, nuclear and medical.

Tungsten alloy is a suitable raw material for tungsten alloy radiation container, because of tungsten alloy radiation container combination of radiographic density (more than 60% denser than lead), good machinability, good corrosion resistance, high radiation absorption (superior to lead), simplified life cycle and high strength. Tungsten alloy radiation shielding can provide the same degree of protection as lead whilst significantly reducing the overall volume and thickness of shields and containers. Moreover, compared with lead or depleted uranium, tungsten alloy is more acceptable in this case, for it is non-toxic and environmentally friendly material.

Tungsten Alloy For Radiation Protection.

The tungsten alloy reliably shields against X-rays and gamma radiation. With its new production process and great expertise in the materials field, ChinaTungsten has made the manufacture of shielding components particularly cost-effective.

Whether in the world of medical or industrial X-ray technology, radiotherapy or nuclear power stations: Wherever high-energy radiation is used, it is vital to protect people against it.

The denser the material, the better able it is to protect from radiation. That is why heavy elements absorb X-rays and gamma radiation particularly well. Lead is still the most frequently used shielding material. Because it is a very soft material, it is mostly used only in combination with support structures made of steel.

Lead is a toxic material that is harmful to the environment and humans. The onerous recycling process makes lead expensive despite the low initial procurement costs. Many enterprises are therefore looking for a suitable alternative for providing reliable radiation protection.

The density of tungsten is 60 percent higher than that of lead. That is why even thinner layers of tungsten are able to provide reliable shielding against radiation. The tungsten alloy is particularly suitable as a shielding material. It consists of tungsten and a small proportion of nickel-iron. Like tungsten, the material has excellent shielding properties. However, it is also considerably more ductile than tungsten and can therefore be machined better.

Tungsten Alloy Radiation Shielding

Why we need tungsten alloy radiation shielding?

As medical science developing so repaid, there is more and more radiation in our life, which has become a new trouble, such as X-ray radiation, gamma radiation (energetic electromagnetic radiation), radiation of alpha particles (helium atoms) beta particles (electrons) and cosmic radiation, etc.

In order to protect patients and other people safe from harmful effects of ionizing radiation, such as breast cancer, skin cancer, etc. One type of excellent radiation-absorbing medium is badly needed.

Advantages of tungsten alloy radiation shielding

Experts find that radiation exposure could be reduced by maxing shielding. The density of a material is related to its radiation stopping ability. Higher density means better stopping power and shielding. Due to a higher density, tungsten alloy has a much higher stopping power than lead. Its greater linear attenuation of gamma radiations means that less is required for equal shielding. Alternatively equal amounts of tungsten alloy shielding provide diminished exposure risks than equivalent lead shielding.

Tungsten alloy is a suitable raw material for radiation protection, as its combination of radiographic density (more than 60% denser than lead), machinability, good corrosion resistance, high radiation absorption (superior to lead), simplified life cycle and high strength. It can provide the same degree of protection as lead whilst significantly reducing the overall volume and thickness of shields and containers. Besides, compared with lead or depleted uranium in the past, tungsten alloy is more acceptable in this case, for they are non-toxic.

Radiation Shielding

Whether you need to protect sensitive electronic equipment or delicate human tissue, the energy-absorbing properties of ChinaTungsten's tungsten alloys make them exceptional choices for radiation shielding applications, in both medical and industrial settings.

Our tungsten alloys are used for radioactive source containers, gamma radiography, shields, and source holders for oil-well, logging, and industrial instrumentation. High-density alloys also serve as collimators and radiation shielding in cancer therapy, as well as syringe protection for radioactive injections. When you need to direct a specific amount of radiation to a targeted area, tungsten alloys provide the control you need. Mi-Tech Metals’ high-density alloys will continue to perform, even under extreme, high-heat conditions.

Compared to traditional radiation shielding materials, tungsten alloys provide excellent value. A high-density alloy can provide the same energy absorption as lead using 1/3 less material! Unlike lead, you’ll also reduce administration costs by eliminating the need to obtain special licensing—it’s not required.

Clients all across the globe are taking advantage of tungsten alloy’s reliable radiation shielding properties. If you need to protect yourself, your patients or your equipment from the harmful effects of excess radiation, call a Mi-Tech Metal professional to discuss the benefits of our high density metals today.