Energy-resolved computed tomography with a response-function-less transXend detector

ABSTRACT

A ‘transXend’ detector measures X-rays as electric current and yields an X-ray energy spectrum after analysis. Response functions are necessary for the analysis and are previously estimated using material details of the X-ray detector. The detector specifics, however, are not always available to users. Here, a ‘response-function-less’ transXend detector is described that relies on transmission measurements of X-rays that passed through known basis materials. The validity of the method is verified by obtaining effective atomic numbers for nine resins.

KEYWORDS:

• X-ray
• computed tomography
• energy-resolved
• current measurement
• response function
• effective atomic number

Acknowledgments

The authors are thankful to D. Ito and H. Kuniwake for their fruitful discussions.

Disclosure statement

No potential conflict of interest was reported by the author(s).