Ces radiol. 2009, 63(1):28-33

Cardiac imaging with dual-energy computed tomographyOriginal article

Jiří Ferda¹, Jan Baxa¹, Thomas Flohr², Bernhard Schmidt², Boris Kreuzberg¹

¹ Radiodiagnostická klinika LF UK a FN, Plzeň

² Siemens Medical Solutions, CT division, Department of Research and Development, Forchheim, Deutschland

Aim: To evaluate the experience with the dual-energy cardiac CT (DECT).


Material and method. Forty examinations (29 males, 11 females, mean age 58.3 ranging 48-81 year) using dual-energy CT on dual-source system operating in dual energy mode were performed in suspected coronary arterial disease (27×) and in patients who underwent aortocoronary bypass graft surgery (13×). Based on the two sets of images (140 kV and 100 kV) images of 1.5 mm thickness, 330 ms of temporal, the three-material-decomposition algorithm was used to create maps of iodine distribution and these maps were used in myocardial perfusion analysis. Perfusion analysis using DECT was compared with perfusion and delayed enhancement magnetic resonance imaging in 20 patients.

Results: Sufficient perfusion imaging was obtained in 88% of patients; assessable angiogram of coronaries was reconstructed in all patients. Comparing the perfusion analyses, the same finding was found both on DECT and MRI in 85% of patients.

Conclusion: DECT of the heart is the promising imaging method including the imaging of coronary anatomy and myocardial perfusion obtained from a single data acquisition.

Keywords: computed tomography, dual-energy imaging, cardiac CT, myocardial perfusion

Grants and funding:

Podpořeno výzkumným záměrem MSM 0021620819.

Accepted: February 15, 2009; Published: March 1, 2009  Show citation