Title :
Analysis of image-reconstruction algorithms for circular, cone-beam CT by Hotelling observer performance on a detection task
Author :
Sidky, Emil Y. ; Pan, Xiaochuan
Author_Institution :
Dept. of Radiol., Univ. of Chicago, Chicago, IL, USA
Abstract :
We apply task-based evaluation methods to image-reconstruction in circular cone-beam CT. The particular task considered is that of detection of a micro-calcification of known location in a known background; namely a signal-known-exactly/background-known-exactly (SKE/BKE) detection task. The image-reconstruction algorithms are evaluated based on efficiency for detection. This task-based metric can be applied to any linear image-reconstruction algorithm, such as the FDK algorithm or other more recent approximate methods for image-reconstruction in circular, cone-beam CT.
Keywords :
computerised tomography; image reconstruction; mammography; medical image processing; Hotelling observer performance; SKE-BKE detection task; background known exactly detection task; circular cone beam CT; image reconstruction algorithms; microcalcification detection; signal known exactly detection task; task based evaluation methods; task based metric; Algorithms; Cone-Beam Computed Tomography; Imaging, Three-Dimensional; Pattern Recognition, Automated; Radiographic Image Enhancement; Radiographic Image Interpretation, Computer-Assisted; Reproducibility of Results; Sensitivity and Specificity;
Conference_Titel :
Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4244-3296-7
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2009.5333643
