Dual-Energy Computed Tomography: From Inception to Tomorrow

Deborah Greer, MEd, RT(R)(M)

*Professor and Clinical Coordinator, Radiography, CT, and MRI Programs, Mercer County Community College, West Windsor, NJ.

Address correspondence to: Deborah Greer, MEd, RT(R)(M). E-mail: debgreer724@msn.com.  

Disclosure statement: The author reports having no significant financial or advisory relationships with corporate organizations related to this activity.


Dual-energy (DE) computed tomography (CT) and multienergy CT represent an emerging field in CT imaging and is moving quickly into mainstream CT imaging procedures. Numerous technical advances have taken place in recent years that incorporate this technology into standard imaging protocol, for which the most up-to-date information for radiologic technologists (RTs) is needed. This course will provide RTs with information on DECT and appropriate patient care, radiation protection practices, and procedures. The history of DECT as well as patient preparation prior to their imaging study, practices and procedures during the study, and patient post-care will be covered.  The contrast media used during DECT procedures including indications and contraindications and the responsibilities of the RT for patients, personnel, and the public in regards to radiation protection and safety are outlined. Image formation, evaluation, and archiving as well as the equipment associated with various procedures and the specific techniques and applications associated with DECT will be highlighted.


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