Background: Gonad shielding has been recommended during pelvic x-rays since the 1950s. The popular method of gonad shielding is placement a lead shield in the midline of the pelvis. The aim of this study was to evaluate the prevalence and utility of gonad shielding in pediatrics undergoing pelvic x-rays.Materials and MethodsFollowing study approval, we retrospectively retrieved data from the di...

Stability of linear delayed systems subjected to digital control is analyzed. These systems can typically be written in the form ẋ(t) = Ax(t) + Bx(t− τ) + Cx(tj−1) , t ∈ [tj , tj+1) , where tj = j∆t with ∆t being the sampling period for the digital controller. The point-delay term x(t−τ) is assumed to be inherently present in the governing equation of the uncontrolled system, while the term x(t...

Adaptation to the digital world is explained by concept of nativity, which includes competencies such as grow up with technology, being comfortable multitasking, reliant on graphics for communication, thrive instant gratifications and rewards. On other hand, one sources differentiation in technologies generation (X, Y Z), about year birth or age. In this study, nativity levels generations were ...

We provide simple protocols for generating digital volume data with the high-resolution episcopic microscopy (HREM) method. HREM is capable of imaging organic materials with volumes up to 5 x 5 x 7 mm3 in typical numeric resolutions between 1 x 1 x 1 and 5 x 5 x 5 µm3. Specimens are embedded in methacrylate resin and sectioned on a microtome. After each section an image of the block surface is ...

This study is focused on the evaluation of a Digital Elevation Model (DEM) for Tokyo, Japan from data collected by the recently launched TerraSAR add-on for Digital Elevation Measurements (TanDEM-X), satellite of the German Aerospace Center (DLR). The aim of the TanDEM-X mission is to use Interferometric SAR techniques to generate a consistent high resolution global DEM dataset. In order to gen...

This paper studies the properties of a new class of codes introduced recently (and currently being used) in the context of digital system test compaction [12]. These codes, named X-codes after the “X” symbol used to denote unknown logic values in digital systems, address the problem of detecting errors in the presence of unknowns. Specifically, an X-code produces a hash (or signature) over a se...

orthopantomography is a well-established imaging technique in dental diagnosis. although its exposure to individuals is relatively low compared to other diagnostic radiology examinations, it is still the most frequent x-ray examination. so it is important to estimate absorbed dose to critical organs in this examination. the present study was designed to determine the radiation doses to eyes, pa...

The design methodology for the development of 3D integrated edgeless pixel detectors with in-pixel processing using Electronic Design Automation (EDA) tools is presented. A large area 3 tier 3D detector with one sensor layer and two ASIC layers containing one analog and one digital tier, is built for x-ray photon time of arrival measurement and imaging. A full custom analog pixel is 65μm x 65μm...