Access to eBooks is limited to institutions that have purchased or currently subscribe to the SPIE eBooks program. eBooks are not available via an individual subscription. SPIE books (print and digital) may be purchased individually on SPIE.Org.

Contact your librarian to recommend SPIE eBooks for your organization.
Translator Disclaimer
Chapter 2:
Physics of Spectral CT Measurements

Figure 2.1 depicts the setup of a spectral CT x-ray attenuation measurement. The source S emits a flux of x-ray quanta at an object. The object consists of x-ray-attenuating materials that are described by their spectral attenuation coefficient μ(E, r) at position r. The detector registers the quanta passing through the object. Two independent measurements with and without the object are performed. The resulting intensities I and I0 yield the attenuation A = I=I0 ∈ [0,1], which describes the relative decrease in intensity caused by x-ray attenuation in the object. In the following, we briefly review the spectral characteristics of the source, object, and detector.

Online access to SPIE eBooks is limited to subscribing institutions.

Back to Top