objective : double aortic arch (daa) is a rare congenital malformation. strategies for diagnosis and treatment are different. thoracoscopic treatment of daa is limited to case reports or little case series. we report a description of our diagnostic and therapeutic approach and evaluate outcomes. methods: we reviewed charts of infants with double aortic arch who were hospitalized in our departme...

The ability to conduct high-quality automatic 3D segmentation of tumors in CT scans is of high value to busy radiologists. Discriminative random fields (DRFs) were used to segment 3D volumes of lung tumors in CT scan data. Optimal parameters for the DRF inference were first calculated using gradient ascent. These parameters were then used to solve the inference problem using the graph cuts algo...

conclusions performing routine chest and abdominopelvic ct-scan in conscious blunt trauma patients decreases the hospitalization time but has no effect on patient complications and final outcome. using a selective approach and performing ct-scan only for symptomatic patients, would be an appropriate option to decrease radiation dose and facility overuse. nevertheless, the concern of missing occ...

The ability to conduct high-quality semiautomatic 3D segmentation of lung nodules in CT scans is of high value to busy radiologists. Discriminative random fields (DRFs) were used to segment 3D volumes of lung nodules in CT scan data using only one seed point per nodule. Optimal parameters for the DRF inference were first found using simulated annealing. These parameters were then used to solve ...

One of the dominant approaches to tissue engineering is the seeding of biodegradable, biocompatible polymer scaffolds with progenitor cells prior to 3D culture or implantation. The microarchitecture of these scaffolds has direct effects upon the ability of cells to attach, migrate, and differentiate. Microtomographic (micro-CT) scanners enable high-speed 3D characterization of the salient featu...

Industrial computed tomography (CT) has opened a new paradigm in product inspection fields. In contrary to other 3D inspection devices, industrial CT systems can completely digitize the interior as well as the exterior of nearly any object. Without any destructive testing, an object’s failures can be detected by volume data analysis from industrial CT scan data. In this paper, we present a set ...

PURPOSE To compare the accuracy of 2D algorithm with an established 3D algorithm, and to define the number of CT-slices needed for treatment planning of intact breast irradiation. MATERIAL AND METHODS Twenty patients with breast cancer treated with conservative surgery were included in this study, ten of them had right breast cancer and the other 10 patients had cancer of the left breast. For...

The aim of this study was to investigate the clinical application effects of a novel computer-aided detection (CAD) system based on three-dimensional computed tomography (CT) images on pulmonary nodule. 98 cases with pulmonary nodule (PN) in our hospital from Jun, 2009 to Jun, 2013 were analysed in this study. All cases underwent PN detection both by the simple spiral CT scan and by the compute...