Lin Li MD, Presenter: Nothing to Disclose

Yanfeng Zhao MD, Abstract Co-Author: Nothing to Disclose

liang yang, Abstract Co-Author: Nothing to Disclose

Dehong Luo MD, Abstract Co-Author: Nothing to Disclose

chunwu zhou, Abstract Co-Author: Nothing to Disclose

Huizhi Cao, Abstract Co-Author: Nothing to Disclose

1)To understand typical beam-hardening artifact in clinical images and why virtual monochromatic images are naturally free of beam-hardening artifact. 2) To demonstrate the advantage of virtual monochromatic images with extra metallic artifact reduction technique(MARs) in a significant reduction metal artifact. 3) To summarize the experience of phantom and clinical study on selecting optimal keV to reduce artifact while remaining the best CNR.  

1) Various beam-hardening and metal artifacts artifacts in traditional CT examination. 2) Principle of virtual monochromatic imaging using rapidly switching the dual kVp and what is MARs. 3) Monochromatic image demonstrating a significant reduction in artifact from phantom experiment and clinical study 1. Optimal keV and Scan parameters to remove artifacts near contrast agents or bones. 2. Optimal keV with MARs to remove artifacts near metal. 3. Experimental data and various clinical images.  

http://abstract.rsna.org/uploads/2014/14019288/14019288_cfu5.pdf

Li, L, Zhao, Y, yang, l, Luo, D, zhou, c, Cao, H, The Value of Single-source Dual-energy Spectral CT Imaging in Beam-hardening Reduction and Metallic Artifacts Correction.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14019288.html