Medi-Ray’s Tungsten Applications

Medi-Ray is at the forefront of technology and a leader in the development of Tungsten and its alloys for lead shielding solutions, the radiopharmaceutical, medical and aerospace industries, and counterweights. For over 45 years, Medi-Ray’s research and development team have focused their efforts on the invention and improvement of shielded laboratory apparatus that safeguards the health of clinicians in the nuclear medicine environment.

From unique syringe holders and dose calibrator shielding to waste storage containers, Medi-Ray has combined antimonial lead, tungsten, leaded glass and a variety of other metals and specialized coatings to create a diverse line of specialized products to meet all your nuclear medicine laboratory apparatus needs. Tungsten’s high density and electronic structure make it one of the main sources for X-ray targets and shielding from high-energy radiations for the radiopharmaceutical industry. Tungsten is a sintered metal that is formed into blanks under high heat and pressure. It is roughly 40% denser than lead, making it extremely hard and not malleable like lead. Other benefits of tungsten shielding are that it has a high radiation attenuation, is easy to keep clean and sterilize, is a nontoxic material, has dimensional stability and is hard and durable so there is no need for a steel or plastic coating.

Tungsten high-density metals provide the properties required in radiation shielding for therapy as well as diagnosis. Other applications include collimators, syringe and vial shields and radioactive source containers. Tungsten-based high-density metals have a more superior shielding capability than lead without any health or environmental concerns and high-density materials effectively absorb gamma radiation and X-rays.

Tungsten-based high-density metals are often specified for radiation shielding in aerospace, medical, military, and nuclear energy applications.  Tungsten heavy alloys require 1/3 less space as lead shielding and possess no threat to the environment. Whether shielding radioactive material used in nuclear medicine, radiation therapy, or gamma radiation inspection units, Medi-Ray is the best choice for your application. All of our products and services meet the highest standards and are compatible with the current metallurgical and radiation shielding requirements. Medi-Ray is located at 150 Marbledale Road in Tuckahoe, New York. Call us toll-free at 877-898-3003 or 914-979-2740. You can also email If you would like additional information, please visit our website at We are committed to offering the highest quality service to all our customers.


Medi-Ray Tungsten Applications

Tungsten is a heavy metallic element and a transition metal. It most often occurs in minerals such as scheelite, wolframite, huebnerite and ferberite, and is obtained commercially by reducing tungstic oxide with hydrogen or carbon. It has the highest melting point of all the metals. Heat causes Tungsten to expand at the same rate as glass, so it is widely used to make glass and metal seals. Tungsten carbide is a compound used in the metalworking, mining and petroleum industries.

There are several applications and uses for Tungsten and its alloys, including:

  • Glass-to-metal seals
  • Filaments for electric lamps, electron and television tubes, and metal evaporation work
  • Electric contact points for car distributors
  • X-ray targets
  • Radiation shielding
  • Windings and heating elements for electrical furnaces
  • Missile and high-temperature applications
  • High-speed tool steels
  • Metal-working, mining and petroleum industries
  • Calcium and magnesium tungstates for fluorescent lighting
  • Tungsten salts are used in the chemical and tanning industries
  • Tungsten bronzes are used in paints
  • TV tubes
  • X-ray targets

Medi-Ray uses Tungsten or its alloys for our lead shielding and counterweights due to its high density. Its electronic structure makes it one of the main sources for X-ray targets and shielding from high-energy radiations for the radiopharmaceutical industry. From the toy industry to radio-pharmaceuticals to aerospace, we have the technology and processes to meet every need and exceed all expectations. Our lead products and services meet the highest standards and are compatible with the current metallurgical and radiation shielding requirements.

We are located at 150 Marbledale Road in Tuckahoe, New York. Call us toll-free at 877-898-3003 or 914-979-2740. You can also email We are committed to offering the highest quality service to all our customers.


Myths about Radiation

Radiology is the science of dealing with X-rays and other high-energy radiation. It has been shown to be of major importance to modern medicine and plays an important role in the diagnosis and treatment of many diseases and conditions. Despite radiology being used to help treat many patients, there are still some myths about the dangers and risks of being exposed to radiation. Read below to learn about some common myths concerning exposure to radiation.

Myths About Radiation Debunked: 

  • Exposure to radiation is not safe and may cause side effects.

People are continuously exposed to different forms of radiation every day, including when breathing in air or eating food. Radiation in medication, electricity generation and many other applications has extended and saved many lives. A study done by the United Nations Scientific Committee has shown that the risk associated with low-dose radiation from natural and man-made sources is extremely small. Also during X-Rays, MRIs, and other radiology scans, the small levels of radiation that a patient is exposed to will not cause side effects.  

  • Radiology scans are not safe for a pregnant woman.

There has been no proof of physical harm being done to a fetus from an ultrasound. A 3D scanner does not use stronger sound waves or produce more heat than a 2D scan, so it is considered just as safe for infants. Also, 3D scans are more accurate in detecting certain physical abnormalities. 

  • Radiation treatment will cause cancer.

Although this may not be a myth, the chances of receiving cancer from radiation treatment are very low. It is, however, important for doctors to consider the risk of causing new cancer in the context of the potential gain from treatment. The possibility that therapeutic radiation would lead to a new cancer is exceedingly small and depends on a number of factors, including age at the time of treatment, the region of the body treated, and the dose received. Medicine and research will continue to progress as will the use of radiation treatment for different types of cancer. 

At Medi-Ray we focus on creating medical and laboratory instruments that meet the needs of our customers. By utilizing lead castings, sheet lead and lead foil we develop clinic, laboratory, and medical products that are user-friendly. Medi-Ray understands the importance of using equipment made with lead to protect against harmful radiation. At Medi-Ray we specialize in lead metal technology. We make lead products that are used in medical equipment and lab accessories that shield against radiation.


The Benefits of Doing Business with a Company that has an ISO 9001 Certification

How can you be sure that the company you’re doing business with is dedicated to providing you the best quality product, customer service and always looking for ways to improve? Search for one that voluntarily practices the internationally set of standards developed by ISO (International Organization for Standardization). In particular, the ISO 9000 family, which addresses various aspects of quality management and contains some of ISOs best known standards. A company that has a certification to the ISO 9001 standard delivers high quality products and services.

ISO 9001 is a quality management system that is successfully used all over the world. In 2013, over one million certifications were issued across 187 countries. Many companies and organizations use the standard to improve the way they work without even being certified. The benefits of ISO 9001 are not fabricated; companies large and small have prospered from following a quality management system that allowed them to discover cost and efficiency savings. Here are the main benefits of an ISO 9001 certification:

  • Improvement of company’s credibility and image
  • Improvement of customer satisfaction
  • Better process integration
  • Improve company’s evidence for decision making
  • Create a continual improvement culture
  • Engagement of employees

The international quality management system, ISO 9001, is recognized as such a basic and influential standard that it is used as the basis when industry groups want to add specific industry requirements, thus creating their own industry. These include AS9100 for the aerospace industry, ISO 13485 for the medical devices industry and ISO/TS 16949 for the automotive industry. Certification to this standard will lead to a company’s success, by implementing the benefits available through an ISO 9001 quality management system, a business can build to even higher savings and improvement.

From the very beginning Medi-Ray has employed effective, end-user oriented management to ensure that resulting lead products and services are of the highest standards and compatible with today’s metallurgical and radiation shielding requirements. We have been certified to the ISO standards so that we may continue to provide our clients with quality service and products.


Features and Benefits of Lead Bricks

Lead bricks are used in various shielding requirements, including x-ray radiation and nuclear shielding. However, they can also be used for radioactive isotope creation, ballast weights and counterbalances. Lead bricks are available in a variety of sizes, and in different design options to suit shielding and weight applications. Below are the features and benefits of lead bricks:

Key features

  • Lead bricks are cast out of 99.9% pure virgin, high quality lead.
  • They are commonly used for shielding in applications where lead sheet shielding is impractical or not available in sizes or thicknesses required.
  • Can be adapted for many different applications, in walls, bunkers, coves, glove-boxes, hot cells, partitions, nuclear shielding, transporting radioactive materials or as a ballast weight.
  • Available in a wide range of sizes, thicknesses and shapes and interlocking designs to suit your application.
  • Maximum protection against x-ray beta and gamma radiation with interlocking configurations that prevent radiation leakage through gaps. The interlocking configurations also provide a stable and a sturdier wall system to prevent it from falling.
  • They can be cut on site in any direction without losing the interlocking capability. A double row can also be stacked behind the first in a staggered pattern to prevent the loss of radiation effectively.
  • Machine finished lead bricks are also available.


  • Lead bricks reduce exposure to harmful high energy radiation.
  • They create a safe and healthful environment.
  • They are flexible—Lead bricks can be easily erected, modified, disassembled and relocated in the field to create protective wall systems and cells to suit your application.
  • They are custom designed and manufactured in different sizes and weights according to customer specifications.

Contact Medi-RayTM, Inc.

Medi-RayTM, Inc. is the hallmark for radiation safety, shielding solutions and counter weight designs. We supply all standard lead brick sizes as well as interlocking configurations. Custom designs and sizes are supplied in the shortest turn-around time in our industry. Call to speak to one of our consultants at 877-898-3003/914-979-2740.


How Do Consumers Benefit from the Quality Management Principles of ISO 9001?

The ISO Quality Management System is the backbone of our society, guaranteeing the safety and quality of products and services, facilitating international trade and improving the environment in which we live. In order for a business or company to improve organization the senior management must apply the seven quality principles of the ISO 9001 standards. The quality management principles are:

  • Customer Focus
  • Leadership
  • Engagement of People
  • Process Approach
  • Improvement
  • Evidence-based decision making
  • Relationship Management

These principles are guidelines that can help companies tackle some of the most demanding challenges of modern business. The ISO standards ensure that business operations are as efficient as possible, increase productivity and help companies access new markets. Many businesses are not only able to cut costs, and reduce their impact on the environment, but are also able to increase customer satisfaction.

When businesses choose to conform to the ISO standards for their products and services consumers can have confidence that the products they purchase are safe, reliable and of good quality. Understanding the needs of existing and future customers is vital in aligning organizational objectives with customer needs and expectations. The ISO standards allow  companies to meet customer requirements, create and manage customer relationships, and exceed customer expectations.

Since the beginning, Medi-Ray has had an effective, end-user oriented management system to insure that the resulting lead products and services are always of the highest standards and compatible with today’s metallurgical and radiation shielding requirements. We have been ISO certified so that we may continue to provide our clients and customers with excellent quality, service and products.


ISO 9001: 2015 A Quality Management System

ISO 9001 helps organizations demonstrate to customers that they can offer products and services of consistently good quality. It is a standard that sets out the requirements for a quality management system. The benefits of this management system are efficiency and improved customer satisfaction for businesses and organizations.

On September 2015 the latest edition of ISO 9001 was published, replacing the previous version (ISO 9001:2008). Every five years the ISO standards are reviewed and revised, if necessary. This allows ISO standards to remain as useful tools for the marketplace. Today businesses and organizations face challenges that are very different from a few decades ago and ISO 9001 has been amended to take this new environment into account. The latest version of the standard brings the user a variety of benefits. For instance, ISO 9001:2015:

  • Puts a greater emphasis on leadership engagement
  • Help address organizational risks and opportunities in a structured manner
  • Uses simplified language and a common structure and terms, which are particularly helpful to organizations using multiple management systems (environment, health & safety, or business continuity)
  • Addresses supply chain management more effectively
  • Is more user-friendly for service and knowledge-based organizations

With over 1.1 million certificates issued worldwide, many businesses and organizations are updating the existing quality management system to meet the revised requirements. The acting ISO Secretary-General, Kevin McKinley states, “The world has changed, and this revision was needed to reflect this. Technology is driving increased expectations from customers and businesses. Barriers to trade have dropped due to lower tariffs, but also because of strategic instruments like International Standards. We are seeing a trend towards more complex global supply chains that demand integrated action. So organizations need to perform in new ways, and our quality management standards need to keep up with these expectations. I am confident that the 2015 edition of ISO 9001 can help them achieve this.”

Certification for ISO 9001 is intended for businesses and organizations to improve their management performance. However, receiving certification to ISO 9001 is not an easy task and it may not always be granted. Every organization is different, so the process required to receive certification to a quality management system will be unique to the situation of the company. The process for becoming certified requires a two-phase audit preformed by an accredited body.

From the very beginning Medi-Ray has employed effective, end-user oriented management to ensure that resulting lead products and services are of the highest standards and compatible with today’s metallurgical and radiation shielding requirements. We have been certified to the ISO standards so that we may continue to provide our clients with quality service and products.


Considerations for Lead Shielding

A certified professional radiation health physicist must calculate the proper amount of lead shielding required based on certain considerations. It will depend on the source of radiation—the type of machine used and where it is located. The following information helps in understanding what factors determine lead shield requirements for diagnostic imagining and radiation therapy. The goal is to ensure that the maximum radiation protection is achieved.

Lead shielding requirements are calculated and determined based on the following considerations:

  1. Energy potential: The energy potential of the machine will determine the lead shielding requirement—the higher the output of the machine, the higher the lead shielding required.
  2. Workload: The exposure per week, month or year must be determined, as well as the maximum patient volume growth, as radiation is cumulative and overexposure causes biological damage on the cellular level. Check the local governing health and safety law and codes for current compliance requirements.
  3. Orientation/Direction: Wall lead shielding is calculated by a physicist in relation to the primary beam target. The direction where the radiation is aimed and will scatter.
  4. Distance: Radiation will dissipate more as distance increases. The closer a partition is to the radiation/x-ray source, the higher the shielding requirement.
  5. Occupancy: A very important part in your calculation is the amount of time, per day, a surrounding room similar to the x-ray room (source or radiation) will be occupied by personnel or public. The lead shielding on wall and floors increases with the level of occupancy.
  6. Type of material: The type of construction material used for wall, partition and floor may reduce the requirement for lead shielding. Heavy density materials such as concrete, steel and plaster can shield radiation to some level.

All lead shielding requirements should be calculated by an expert.

Contact Medi-RayTM, Inc.

Medi-RayTM, Inc. specializes in lead shielding solutions. We design and provide various radiation shielding products.