Left ventricle segmentation in dynamic cardiac CT using random walks method.

Purpose: Segmentation of the left ventricle (LV) in cardiac CT (CCT) images is difficult due to the intensity heterogeneity arising from accumulation of contrast agent in papillary muscle and trabeculae carneae. In this study, we demonstrated the random walks method for LV segmentation in CCT through cardiac phases.

Methods: 63 CCT data sets from 7 patients with 9 cardiac phases were included in this study.

Characterization of a thermophilic L-rhamnose isomerase from Thermoanaerobacterium saccharolyticum NTOU1.

L-rhamnose isomerase (EC 5.3.1.