BACKGROUND AND PURPOSE A recent development in radiology is the use of flat panel detectors in CT to obtain higher-resolution images. This technique is known as flat panel volume CT (fpVCT). We sought to compare the image quality and diagnostic value of 2 different flat panel detector-equipped scanners: one is a prototype fpVCT scanner, and the other is a so-called flat panel digital volume tom...

Total reflection X-Ray Fluorescence (TXRF) is a comparatively new technique of material characterization and trace element analysis. It is an advanced variant of Energy Dispersive X-ray Fluorescence (EDXRF) and is based on the principle of total reflection of X-rays when these radiations fall on a flat smooth surface at a grazing angle less than the critical angle of the sample support. The cri...

Increasingly, veterinarians are using medical imaging to diagnose their patients. There is a corresponding tendency towards replacing conventional film-screen systems with digital medical imaging systems, such as computed radiography (CR) and direct radiography (DR). With these systems, many veterinarians around the world are enjoying considerable benefits, including time savings and optimal im...

A laboratory-based X-ray reflectometer has been developed to measure the performance of hard X-ray multilayer coatings at their operational X-ray energies and incidence angles. The instrument uses a sealed-tube X-ray source with a tungsten anode that can operate up to 160 kV to provide usable radiation in the 15-150 keV energy band. Two sets of adjustable tungsten carbide slit assemblies, space...

X-ray techniques are commonly used in the fields of non-destructive testing (NDT) of industrial parts, material characterization, security and examination of various other specimens. The most used techniques for obtaining images are radioscopy for 2D and computed tomography (CT) for 3D imaging. Apart from these two imaging techniques, where X-ray radiation penetratesmatter, other methods like r...

Purpose Pulmonary ventilation and circulation dynamics are reflected on fluoroscopic images as changes in X-ray translucency. The purpose of this study was to investigate the feasibility of non-contrast functional imaging using a dynamic flat-panel detector (FPD). Methods Dynamic chest radiographs of 20 subjects (Abnormal, n=12; Normal, n=8) were obtained using the FPD system. Image analysis wa...

In the field of respiratory medicine, chest radiography and chest CT have to date been the main modalities of imaging used in routine medical care. The word tomosynthesis is formed from tomography and synthesis, tomosynthesis is a kind of digital tomography which is an imaging modality capable of reconstructing a coronal plane section of arbitrary height from a single tomographic scan 1) . The ...

The design, initial imaging performance, and model-based optimization of a dedicated cone-beam CT (CBCT) scanner for musculoskeletal extremities is presented. The system offers a compact scanner that complements conventional CT and MR by providing sub-mm isotropic spatial resolution, the ability to image weight-bearing extremities, and the capability for integrated real-time fluoroscopy and dig...