background x-ray, is one of the oldest, and yet the most widely used form of medical photographing. x-ray is a valuable tool to diagnose and examine many diseases such as arthritis, spinal injuries, pneumonia, bronchitis and even cancer. running a quality control program of the radiology devices can reduce the absorbed dose in the patients. the aim of this study is to take the quality control t...

Methods We examined 58 children with juvenile idiopathic arthritis. Clinical, serological and x-ray manifestations were analyzed in children and correlated with the genotypes. For detection erosion bone process we used ultrasound, x-ray, MRI and diagnostic arthroscopy with synovial biopsy. We investigated (PCR-RFLP) the status of p53 gene this children with juvenile idiopathic arthritis and 100...

We discuss the different physical processes that are important to understand the thermal X-ray emission and absorption spectra of the diffuse gas in clusters of galaxies and the warm-hot intergalactic medium. The ionisation balance, line and continuum emission and absorption properties are reviewed and several practical examples are given that illustrate the most important diagnostic features i...

Real-time visualization of digital X-ray image sequences requires the reduction of severe noise while preserving diagnostic details. We introduce a noise reduction method for X-ray image sequences using products of Laplacian pyramid coefficients. The method features SNR improvement comparable to the Wiener filter, however, being superior in the preservation of fine structures and generating a m...

Thirty-two years after injection of thorium dioxide (Thorotrast) for diagnostic x-ray studies in a female patient deposits were found by light microscopy in the liver macrophages (Kupffer cells). They were shown by electron microscopy to be located inside secondary lysosomes, and by autoradiography and x-ray microanalysis they were identified as thorium.

Synopsis This chapter presents x-ray image quality optimization techniques using digital phantom images and computerized observer models. The X-ray imaging parameters are optimized so as to maximize tumor detectability while minimizing the patient dose. Digital phantoms are generated using the virtual photographic and radiographic imaging simulator (ViPRIS) package. ViPRIS uses a tomographic ph...