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A low-cost fiducial reference phantom for computed tomography.

Journal of Research of the National Institute of Standards and Technology

| November 01, 2008 | Levine, Zachary H.; Grantham, Steven; Sawyer, Daniel S.; Reeves, Anthony P.; Yankelevitz, David F. | COPYRIGHT 2008 National Institute of Standards and Technology. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

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 ...

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Source: HighBeam Research, A low-cost fiducial reference phantom for computed tomography.

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