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- W1987693728 abstract "A dual-energy X-ray tomodensimeter adapted for the determination of bone mineral density (BMD) of the lumbar vertebrae has been directly developed from a typical dual-energy X-ray absorptiometer. This apparatus consists of two fundamental parts: a dual energy X-ray tube, and a multidetector made by an array of 24 NaI(Tl) crystals. It provides both tomographic and non-tomographic (anteroposterior, lateral etc) measurement. The detection area is limited to 132 mm. In this condition, the choice of the best reconstruction algorithm in order to give a direct BMD is considered. Preliminary studies based on numerical simulated projections and hydroxyapatite phantoms demonstrated the superiority of algebraic reconstruction algorithms, such as conjugated gradient." @default.
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- W1987693728 date "1992-12-01" @default.
- W1987693728 modified "2023-10-11" @default.
- W1987693728 title "Prototype of dual energy X-ray tomodensimeter for lumbar spine bone mineral density measurements; choice of the reconstruction algorithm and first experimental results" @default.
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- W1987693728 doi "https://doi.org/10.1088/0031-9155/37/12/007" @default.
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