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- W1505202130 abstract "Lawrence Livermore National Laboratory (LLNL) is currently investigating a new method for obtaining absolute calibration factors for radiation measurement systems used to measure internally deposited radionuclides in vivo. This method uses magnetic resonance imaging (MRI) to determine the anatomical makeup of an individual. A new MRI technique is also employed that is capable of resolving the fat and water content of the human tissue. This anatomical and biochemical information is used to model a mathematical phantom. Monte Carlo methods are then used to simulate the transport of radiation throughout the phantom. By modeling the detection equipment of the in vivo measurement system into the code, calibration factors are generated that are specific to the individual. Furthermore, this method eliminates the need for surrogate human structures in the calibration process. A demonstration of the proposed method is being performed using a fat/water matrix." @default.
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- W1505202130 date "1991-12-31" @default.
- W1505202130 modified "2023-09-27" @default.
- W1505202130 title "Absolute calibration of in vivo measurement systems using magnetic resonance imaging and Monte Carlo computations" @default.
- W1505202130 hasPublicationYear "1991" @default.
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