K-edge imaging visualization of multi-material decomposition in CT using virtual mono-energetic images

Kevin C. Ma; Thomas W. Holmes; Amir Pourmorteza

doi:10.1117/12.2534918

28 May 2019 K-edge imaging visualization of multi-material decomposition in CT using virtual mono-energetic images

Kevin C. Ma, Thomas W. Holmes, Amir Pourmorteza

Proceedings Volume 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine; 110722H (2019) https://doi.org/10.1117/12.2534918
Event: Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 2019, Philadelphia, United States

Abstract

Virtual mono-energetic images (VMI) are derived from dual- and multi-energy CT acquisitions to visualize attenuation tomograms of an object at a specific x-ray energy. Conventional VMI calculation does not involve k-edge imaging for heavier contrast materials, such as gadolinium and bismuth. To achieve results closer to real-world values, we have developed a VMI calculation and visualization tool that includes k-edge imaging. The algorithm is tested on multi-material decomposition of iodine and gadolinium in a virtual phantom. Attenuation values are calculated for varying concentration of iodine and gadolinium in the simulated phantom. A visualization toolkit is developed to perform VMI calculation and displays output images. Attenuation changes based on incident x-ray energies can be tested and observed, and a characteristic jump in attenuation can be observed in VMI at the 50kV energy (k-edge of gadolinium) in vials containing Gd.

Citation Download Citation

Kevin C. Ma, Thomas W. Holmes, and Amir Pourmorteza "K-edge imaging visualization of multi-material decomposition in CT using virtual mono-energetic images", Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110722H (28 May 2019); https://doi.org/10.1117/12.2534918

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available