Wenli Cai PhD, Presenter: Nothing to Disclose

Da Zhang PhD, Abstract Co-Author: Nothing to Disclose

Bob Liu PhD, Abstract Co-Author: Nothing to Disclose

Michael Ethan Zalis MD, Abstract Co-Author: Co-founder, QPID Health Inc Chief Medical Officer, QPID Health Inc Stockholder, QPID Health Inc

The teaching points of this exhibits are: 1. Dual-energy CT colonography (DE-CTC) has different profiles of radiation dose compared to conventional single-energy CT colonography (SE-CTC). 2. Dual-energy electronic cleansing (DE-EC) improves the quality of electronic cleansing and the diagnostic performance in fecal-tagging DE-CTC images compared to SE-CTC. 3. DE-EC may achieve better EC performance compared to conventional single-energy EC with less radiation dose. 4. Low-dose DE-CTC assisted by DE-EC has the potential to become the next-generation colorectal screening modality.

The exhibit will be outlined as below: 1. Experiments of radiation dose: demonstrate the measurements of radiation dose in the colon scanned by DE-CTC and SE-CTC imaging protocols at the same scanner-reported doses. 2. Review of the DE-EC technique for low-dose DE-CTC, including reduction of image noise, material decomposition model, and virtual colon tagging. 3. Experiments of DE-EC: demonstrate the improvement of EC quality in the reduction of artifacts and pitfalls by using DE-EC vs. single-energy EC. 4. Discussion of the effectiveness and limitations of DE-EC techniques in visualization of low-dose DE-CTC images. 5. Future work and summary of DE-EC in low-dose DE-CTC images.  

http://abstract.rsna.org/uploads/2014/14016182/14016182_68za.pdf

Cai, W, Zhang, D, Liu, B, Zalis, M, Radiation Dose and Image Quality for Low Dose Fecal-tagging CT Colonography: A Comparison of Electronic Cleansing between Single-energy and Dual-energy CTC.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14016182.html