The purpose of the survey was to evaluate physician's and authorities policies and clinical practices when using occupational X-ray during ablation procedures and device implantation. This survey shows infrequent use of lead gloves, radiation absorbing pads, and lead glass cabins, but increasing use of three-dimensional mapping systems to decrease X-ray radiation hazards. Digital fluoroscopy wi...

Study of Image quality parameters like Contrast, SNR and MTF for Digital Radiography with FPD were carried out at different X-Ray tube variables like energy of X-Ray (kV) and tube current (mA) for different welded tube thicknesses. Experiments of Digital Radiography were carried out on butt welded tubes. Images of these welded tubes were taken with different kV and mA on actual working setup ke...

It is well known that chest X-ray imaging plays a very important role in the diagnosis of chest lesions in neonates 1) . However, concerns exist that the exposure of neonatal patients to increasing quantities of radiation through imaging will increase the future risk of cancer development. Additionally, the exposure dose received by the operator and attendants is also of concern, as they often ...

The ability to resolve 2ne picture detail is of paramount importance in medical imaging systems for viewing small tissue, bone structure and anatomy in X-ray images. In this paper, we present a new digital radiographic image processing system with the property of scalability and adaptability. (i) A new automatic optimization algorithm is proposed for display. (ii) An adaptive detection of a reg...

An overview of working with digital X–ray sensor equipment digital intraoral sensors (See Figure 1, opposite page) and this has given me the opportunity to develop and hone a vast array of tips and techniques to help make capturing images with digital intraoral sensors more comfortable and more consistent than ever before. Before we get into specific sensor placement tips, here are some general...

The analysis of X-ray imagery is the standard pre-screening approach for lung cancer. Unlike CTscans, X-ray images only provide a 2D projection of the patient’s body. As a result occlusions, i.e. some body parts covering other areas of the body within this projected X-ray image, can make the analysis more difficult. For example, the ribs, a predominant feature within the X-ray image, can cover ...

The effect of optical coupling efficiency on the spatial-frequency-dependent propagation of signal and noise is considered for x-ray image detectors for digital mammography in which a phosphor screen is optically coupled to a charge-coupled device (CCD) image array. For experimental purposes, optical coupling between a Gd2O2S:Tb phosphor screen and a CCD image array was provided by relay lenses...