abstract |
A phantom for use in calibrating dual energy X-ray absorptiometry and quantitative computed-tomography includes one or more sections which are equivalent to bone to X-rays and which have a shape resembling a lumbar vertebra. Each section includes a substantially cylindrical main body simulating the vertebra centrum, a band simulating the neural arch, and transverse and posterior processes extending from the band. The transverse processes are formed in a define wedge shape which tapers down from its attachment to the neural arch band. The section, or stacked sections, are embedded in a matrix of plastic material equivalent to water or tissue. |