Norbert Gilles Joseph Campeau MD, Presenter: Nothing to Disclose

Christopher J. Stevens MD, Abstract Co-Author: Nothing to Disclose

Alice Cheung Patton MD, Abstract Co-Author: Nothing to Disclose

Amy Louise Kotsenas MD, Abstract Co-Author: Nothing to Disclose

David R. De Lone MD, Abstract Co-Author: Nothing to Disclose

E. Paul Lindell MD, Abstract Co-Author: Nothing to Disclose

Shuai Leng PhD, Abstract Co-Author: Nothing to Disclose

Cynthia H. McCollough PhD, Abstract Co-Author: Research Grant, Siemens AG

Joel Garland Fletcher MD, Abstract Co-Author: Grant, Siemens AG

-To review the basic physical principles of DECT techniques and how these can be used to perform material decomposition and pseudo/virtual monochromatic imaging which are the principle tools used for manipulating DECT source images into clinically useful information. -To illustrate the clinical utility of DECT in neuroradiology with current clinical examples, including virtual non-contrast imaging, bone subtracted CTA of the head/neck and CTV of the brain, evaluation of gout in the cervical spine, and depiction of edema in acute vertebral compression fractures.

Physics of Dual Energy CT (DECT) -Radiologic behavior of materials at different x-ray energies -Methods for performing DECT Material Decomposition/Differentiation -Illustrate how DECT information is processed for specific identification of material Pseudo/Virtual Monochromatic Imaging (P/VMI) -May be performed with image-based post processing or raw-data based processing. Can be useful to reduce metal artifacts, and accentuate tissue contrast/ iodine contrast enhancement. Clinical Examples -Virtual Non Contrast Imaging (hemorrhage, post-angiogram, lipiodol embolus) -Bone subtracted head/neck CTA -Bone subtracted dual energy CTV of the brain -Evaluation of cervical spine involvement by gout -Bone edema associated with acute compression fracture

http://abstract.rsna.org/uploads/2014/14004418/14004418_yili.pdf

Campeau, N, Stevens, C, Patton, A, Kotsenas, A, De Lone, D, Lindell, E, Leng, S, McCollough, C, Fletcher, J, Neuroradiology Applications of Dual Energy CT (DECT).  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14004418.html