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- W2108876196 abstract "To detect the growth in lesions, it is necessary to ensure that the apparent changes in size are above the noise floor of the system. By introducing a fiducial reference, it may be possible to detect smaller changes in lesion size more reliably. We suspend three precision spheres with a precision structure built from pieces from a popular children's building toy. We measure the distances between the centroids of the structures three ways; namely, with a high-precision mechanical method, micro computerized tomography, and medical computerized tomography. The three methods are in agreement, and also agree with the design values for the structure. It is also possible to pick a threshold so that the three spheres have their nominal volumes in the medical computerized tomography images. The use of volumetric measures allows the determination of lengths to much less than the voxel size using materials which have x-ray properties within the range of the human body. A suitable structure may be built with a very small parts cost." @default.
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- W2108876196 date "2008-11-01" @default.
- W2108876196 modified "2023-10-05" @default.
- W2108876196 title "A Low-Cost Fiducial Reference Phantom for Computed Tomography" @default.
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- W2108876196 doi "https://doi.org/10.6028/jres.113.027" @default.
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