Myocardial Ischemia Diagnosed by Dual-Energy Computed Tomography: Correlation With Single-Photon Emission Computed Tomography

For decades, dual-energy imaging has been used for tissue differentiation with several x-ray–based imaging modalities, exploiting the fact that the tissues in the human body show different absorption characteristics when penetrated with different x-ray spectra, spectra that are typically generated by different kV settings of the x-ray tube. Recently, dual-source computed tomography (CT) with 2 x-ray tubes and 2 detector arrays mounted in the same gantry has become available.1 After experience with earlier experimental prototypes, this dual-source CT for the first time enables the clinical acquisition of dual-energy CT studies simultaneously with a single scan.
We used a dual-source […]

Full text available on: http://circ.ahajournals.org/cgi/content/full/117/9/1244

Authors: Balazs Ruzsics, Heon Lee, Eric R. Powers, Thomas G. Flohr, Philip Costello and U. Joseph Schoepf