We evaluated a new 3D angiography system with a flat panel detector (FPD) for its capabilitiy to acquire volume sets during a single rotation scan and to reconstruct high spatial resolution three-dimensional and cross sectional images, namely cone beam volume computed tomography (CBVCT) images. Present status of the technique, advantages and potential applications are discussed.

OBJECTIVE To evaluate image quality of female pelvic computed tomography (CT) scans reconstructed with the adaptive statistical iterative reconstruction (ASIR) technique combined with low tube-voltage and to explore the feasibility of its clinical application. MATERIALS AND METHODS Ninety-four patients were divided into two groups. The study group used 100 kVp, and images were reconstructed w...

Four-dimensional computed tomography (4D CT) is used to account for respiratory motion in radiation treatment planning, but artifacts resulting from the acquisition and postprocessing limit its accuracy. We investigated the efficacy of three experimental 4D CT acquisition methods to reduce artifacts in a prospective institutional review board approved study. Eighteen thoracic patients scheduled...

A large randomized controlled trial, The National Lung Screening Study (NLST), has demonstrated that screening with low-dose spiral computed tomography saved lives from lung cancer when compared with screening with chest radiographs. This is the first test showing efficacy in screening for lung cancer as previous trials of chest radiographs and sputum cytology failed to result in fewer deaths w...

Methods: A 9-year-old boy presented with acute headache, fever and vomiting. He had recurrent meningitis episode one month earlier and a head trauma 6 months ago. Laboratory fi ndings and lumbar puncture suggested an intracranial bacterial infection. Computerized tomography, magnetic resonance imaging and nasal endoscopy failed to fi nd the presence of rhinorrhea. Spiral computed tomography was...

The SYNTAX score is an angiographic scoring system that is currently used for evaluating the complexity of coronary lesions. Its efficiency in both long-term prognosis and the selection of treatment modalities has been shown in many studies. However, there is little evidence for the use of this scoring system in CT angiography, which has become a part of coronary artery disease practice. Here, ...