Title :
Alternating minimization algorithm for dual energy X-ray CT
Author :
Sullivan, Joseph A O ; Benac, Jasenka ; Williamson, Jeffrey F.
Author_Institution :
Dept. of Electr. & Syst. Eng., Washington Univ., St. Louis, MO, USA
Abstract :
We present a method for obtaining quantitative images from dual energy X-ray CT measurements. We adopt a statistical model for the data and reconstruct images by maximizing the log-likelihood via an alternating minimization (AM) algorithm. Results for simulated data are shown and are compared to a post-processing method.
Keywords :
computerised tomography; image reconstruction; medical image processing; minimisation; statistical analysis; alternating minimization algorithm; dual energy X-ray computerized tomography; image reconstruction; maximum log-likelihood; post-processing method; Attenuation; Biological system modeling; Calibration; Computed tomography; Image reconstruction; Minimization methods; Oncology; Power engineering and energy; Systems engineering and theory; X-ray imaging;
Conference_Titel :
Biomedical Imaging: Nano to Macro, 2004. IEEE International Symposium on
Print_ISBN :
0-7803-8388-5
DOI :
10.1109/ISBI.2004.1398604
