Dual Energy

Objective: In supraaortic vessels, bone subtracted maximum intensity projections make the evaluation of computed tomographic angiography (CTA) datasets easier and faster. Dual energy CT can be used for bone removal without user interaction. The purpose of this study was to compare the results of conventional and dual energy-based bone removal. Materials … Read more

This fourth article of our Dual Energy series gives an overview of the most important clinical applications of Dual Energy, including color coding of contrast material, perfusion imaging, angiography, and differentiation of renal stones and tendons/ligaments. Read more

This third article of our Dual Energy-series focuses on the technical implementation of Dual Energy technology. For Dual Energy scanning, the tube potentials are mostly set to 140 and 80 kVp to obtain the largest spectral difference. Weighted average images are calculated by the image reconstruction system to resemble normal 120 … Read more

Electro-cardiogram (ECG)-gated dual energy computed tomography (DECT) of the heart may enable spectral analysis of the myocardium for areas of decreased blood supply in addition to morphological assessment for coronary artery stenosis. We used DECT for evaluating a 49-year-old woman with known coronary artery disease and new onset chest pain. She … Read more

This second article of our new Dual Energy series describes the physics Dual Energy technology. Read more

This first article of our new Dual Energy series introduces you to Dual Energy. Dual Source CT had initially been developed to increase the temporal resolution of CT for cardiac imaging. By now, Dual Energy CT is ready for routine clinical use. Read more

The potential of dual energy computed tomography (DECT) for the analysis of gallstone compounds was investigated. The main goal was to find parameters, that can reliably define high percentage (> 70 %) cholesterol stones without calcium components. Read more

The following question has been sent by Daniel Newman: I am asked frequently about the difference between dual energy and dual source.  It seems that for most people the terms are interchangeble.  However, not all CT systems utilize 2 tubes.  Can you explain to me the pros and cons of each … Read more

Case history: 45-year-old female with cholangiocellular carcinoma and known peritoneal carcinosis presents for follow-up scan post surgery and post chemotherapy. Question: Can virtual non-enhanced imaging confirm the presence of a small renal stone in the lower pole of the right kidney found incidentally? Read more

In conclusion, our initial experience suggests that DECT, as a single examination, might be promising for the integrative analysis of the coronary artery morphology and the myocardial blood supply and is in good agreement with ICA and SPECT. Read more