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The term used to express this is linear energy transfer (LET). Generally, the greater the LET in tissue, the more effective the radiation is in producing damage.
In California, all radiation sources, either radiation (X-ray) machines or radioactive material, are subject to State laws and regulations. The statutes are found in the Health and Safety Code, Division 104-Environmental Health.
5 wrz 2024 · The X-ray imaging resolution of a CT5 screen is much higher than that of a T5 sample and is comparable with that of some commercial scintillators, demonstrating the high potential of this metal-ion to metal-ion energy transfer strategy in X-ray imaging applications.
These provisions address registration and use of X-ray machines, licensing of possession and use of radioactive materials, standards for protection against radiation including public and occupational dose limits, and transportation of radioactive material.
5 wrz 2024 · In this review, we summarize recent progress in fabricating high-performance energy transfer-based scintillators using a variety of X-ray sensitizers and emission centers and provide a detailed interpretation of the corresponding energy transfer mechanisms and their tremendous impact on the operation of X-ray imaging scintillators.
Learning Objectives. Clinical application of high LET radiation treatment. Describe how energy deposition varies with charge and velocity. Illustrate the concept of a Bragg peak. Define LET and RBE. Explain how LET affects the shape of the cell survival curve and effect of fractionation. Types of Radiation.
Rad Take-home Point: Linear Energy Transfer (LET) measures the change of energy per change in distance. X-Rays are low LET and α-particles are high LET. Relative Biologic Effect (RBE) provides a method to compare how damaging different types of radiation are, given the same dose, and it is calculated using x-rays as a reference type of radiation.
