Farzana Mehzabin Rahman FRCR, MBBS, Abstract Co-Author: Nothing to Disclose

Seyed Mohammad Mehdi Ameli Renani MBBS, Presenter: Nothing to Disclose

Susan Cheng Shelmerdine MBBS, Abstract Co-Author: Nothing to Disclose

Gerard Goh MBBS, Abstract Co-Author: Nothing to Disclose

Savvas Nicolaou MD, Abstract Co-Author: Nothing to Disclose

Ioannis Vlahos MRCP, FRCR, Abstract Co-Author: Consultant, Siemens AG Consultant, General Electric Company

To illustrate the potential value of a variety of dual energy CT material specific algorithms for the depiction of pathology in patients in the emergency department.

• Brief overview of Dual energy CT: acquisition techniques and material specific imaging • Benefits of paired low-high kVp imaging: contrast opacification and volume/rate optimisation • Series of clinical examples, coupled with explanation of the established material specific images and their potential benefits and limitations in emergency department traumatic and non-traumatic presentations: Pulmonary Blood Volume Imaging – PE, significance of defects, limitations Angiographic imaging – Acute aortic syndromes Bone removal: run-offs (ischaemia/trauma), direct carotid angiography (dissection) Virtual non-contrast imaging: dose reduction, characterisation of incidental lesions post contrast Renal Stone characterisation • Emerging applications: stroke, gout, tendon injury, acute cardiac perfusion, bowel ischaemia, trauma (extravasation)  

This exhibit provides a summary of the current potential benefits and limitations of the use of dual energy imaging in the emergency department, including dose reduction strategies and highlights some emerging potential utilities.

Rahman, F, Ameli Renani, S, Shelmerdine, S, Goh, G, Nicolaou, S, Vlahos, I, Dual Energy Imaging in the Emergency Department.  Radiological Society of North America 2012 Scientific Assembly and Annual Meeting, November 25 - November 30, 2012 ,Chicago IL. http://archive.rsna.org/2012/12031273.html