Standards for x-ray computed tomography
The objective of this project is to create low cost standards for use in x-ray computed tomography (CT) in medicine with emphasis on lung studies. Typically, CT images made of a patient are calibrated daily. However, due to the large variety of vendors with different hardware and software in a rapidly evolving field, it is not always possible to have meaningful time sequences of CT images to show changes in the size of tumors, for example. Moreover, the “CT numbers” as reported show a certain variability due to technical issues such as detector design as well as a lack of precision in the underlying definition.
A commercially available foam may be suitable as a standard for lung CT imaging.
Standards for x-ray computed tomography:
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