The Advantage of Tungsten Gamma Knife
- Details
- Category: Tungsten Information
- Published on Wednesday, 22 July 2015 16:50
Due to tungsten material has high density, excellent radiation attenuation properties, and environmental friendly, it is widely used to produce tungsten gamma knife. Removable 4, 8, 14, or 18mm tungsten collimators with circular apertures are used to create various size focal volumes in gamma knife. Modification of the target radiation dose distribution can be achieved using multiple target points with different collimators, or use of beam plugging, or different beam angles.
A significant advantage of tungsten gamma knife over other available radiological systems is the ability to create conformal and irregular dose plans using multiple tungsten target points. Highly conformal radiosurgery is crucial to maintain low side effect rates by tailoring the effect to the irregular 3D geometry of tungsten target volume; in addition tungsten gamma knife has high selectivity, meaning that the radiation dose falls off outside of the target very steeply, thereby reducing risk of injury to adjacent structures.
The picture below shows tungsten radiation shielding to produce gamma knife.
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