Shima Aran MD, Presenter: Nothing to Disclose

Khalid Walid Shaqdan MD, Abstract Co-Author: Nothing to Disclose

Elmira Hassanzadeh MD, Abstract Co-Author: Nothing to Disclose

Efren Jesus Flores MD, Abstract Co-Author: Nothing to Disclose

Hani H. Abujudeh MD, MBA, Abstract Co-Author: Research Grant, Bracco Group Consultant, RCG HealthCare Consulting Author, Oxford University Press

Dual-energy CT (DECT) enhances the capability of single energy CT with several new applications for advanced imaging of vascular pathologies. With low kVp dataset vascular attenuation is increased and therefore it is helpful in assessment of smaller or more poorly opacified vessels. This results in reduction of contrast utilization and radiation exposure. The availability of virtual noncontrast images help in detection of vascular calcifications and endoleaks. The other key advantages of DECT for vascular imaging are the availability of advanced postprocessing application, bone subtraction and calcification removal techniques. Appropriate use of DECT techniques can save radiation dose, decrease interpretation time, or improve diagnostic accuracy.

1. Physical principles of DE or spectral CT on basis of photoelectric and Compton interactions as well as material decomposition. 2. Available techniques of DE data acquisition, for example, dual source CT scanners, fast kilovoltage switching and sandwich detector tech¬niques. 3. Image processing and reconstruction of DECT data. 4. Clinical application of DECT for diagnosis of vascular pathologies. 5. Sample cases. 6. Limitations of DECT such as the effects on image quality, artifacts and radiation dose.  

http://abstract.rsna.org/uploads/2014/14004622/14004622_dv86.pdf

Aran, S, Shaqdan, K, Hassanzadeh, E, Flores, E, Abujudeh, H, Dual-energy CT: Vascular Applications, Basic Physical Principles and limitations.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14004622.html