Positron emission tomography (PET) is one of the nuclear medicine techniques available for diagnosis. Whilst X-rays provide information on the structure of the body, PET shows the chemical function of a particular organism. PET involves the injection of FDG (a glucose-based radionuclide) shielded syringe into the patient. As the FDG 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 tumors are present. PET scans are frequently used to detect cancerous tumors and diseases of the brain and coronary arteries.

Applications for tungsten alloy shielding in PET include:
PET syringe shield
Tungsten vial shield
Tungsten FDG transport container
Collimator for gamma camera
Technetium generator

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Steeplechase tungsten dart rule may be played by any number of players. It is good practice because it makes you aim at areas of the board you might not normally try to hit.

The Object: To be the first to win the "race" by making your way around the course.

The Scoring: No scoring is needed as long as you can remember playing order and what number each person is up to.

The Play: One dart is thrown by each player at bulls - eye, closest to the bulls - eye goes first.

You must hit one dart in each number starting with 20 and continuing clockwise around the board until the 5 is hit. Only the thin wedge between the bulls - eye and the triples ring (the thin inner ring) count. Any darts that fall outside of this area do not count. All numbers must be hit IN ORDER. Any number of darts may be used to hit the current target number, but once the number is hit, you do not throw your remaining darts and your turn is over.

The rules are different when you must jump the "fences". The fences are located at 6, 3 and 11. To successfully jump a fence, you must hit the triple of the number that the fence is located at instead of the thin wedge. You are also limited to nine darts (three turns) to try to jump the fence. If you do not succeed in jumping the fence with nine darts, you are out of the race.

I have also heard of this game being played with four fences located at 13, 17, 8 and 5. I personally like the first method better. First the locations of the fences in this method are a little confusing to remember. Secondly, having the fence in the number 5 to win the race can be very frustrating. When I tried this method, there were several games where nobody won! We made it all the way around the course and couldn't nail a triple 5. Try both ways and see what you think.

Strategy: Don't fall off your horse, it really hurts.

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Nuclear medicine is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease. Nuclear medicine scans are usually conducted by radiographers. Radiation is an effective tool within nuclear medicine for both diagnostics and treatment of patients.

Tungsten alloy is ideal for shielding against X-rays and gamma radiation. The very high density of tungsten shielding, which is more than 60% density than lead, allows a reduction in the physical size of shielding components, without compromising their rigidity or the effectiveness of the shielding characteristics. Tungsten alloy shielding is used in applications such as collimator, nuclear shielding, beam stop, PET syringe shield, vial shield, isotope container, FDG container, multileaf collimator etc.

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X-Out is a very enjoyable tungsten dart rule for 2 teams or players. The game is played very similar to Cricket without points.
 
The Object: The object of the game is to "close" all your numbers (20 down through 10). To close a number, you must hit three of that number.

The Scoring: The scoreboard is drawn with the numbers 20 through 10 written in descending order down the center of the board. Each tungsten dart that lands in any of the games numbers count toward closing that number. The thin outer ring counts as two of that number and is called a "double". The thin inner ring counts as three of that number and is called a triple. Scoring for one dart is shown by placing a slash next to the number scored. Scoring for two is shown by placing an X next to the number scored. Scoring for three is shown by placing a circle next to the number to indicate it is closed. When three of a number is scored in any combination, it is closed.

The Play: The players each take a turn throwing one dart at bulls-eye, closet tungsten dart to the bulls - eye gets to throw first. The first player throws three darts at any of the scoring numbers to try to close that number. The player then scores the darts that he has thrown and play alternates until one player/team closes all their numbers.

Strategy: There really isn't any strategy to this game, just try to close your numbers.

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