An x-ray imaging system, using digital subtraction techniques, has been developed. The system requires: (1) high output generation equipment; (2) an image intensifier capable of receiving high output exposures, 1 mR (2.58 X 10(-7) C/kg) at the face of the intensifier, without loss of either contrast or resolution; (3) a precision digital video camera; (4) processing computer with sufficient sto...

Digital X-ray radiography has been found to be an appropriate NDT tool for Quality Assurance of large size solid rocket motors, high explosive charges, etc. This technique provides quick and comparable image quality as compared to conventional film radiography. A CCD-based Digital Imaging System (DIS) integrated with a 4 MeV linac X-ray source, installed for the first time in India at HEMRL, Pu...

Several efforts have been made to completely automate cephalometric analysis by automatic landmark search. However, accuracy obtained was worse than manual identification in every study. The analogue-to-digital conversion of X-ray has been claimed to be the main problem. Therefore the aim of this investigation was to evaluate the accuracy of the Cellular Neural Networks approach for automatic l...

Background: Distance learning requires media to help students understand the material. Digital booklets are an alternative teaching biodiversity through visualization. This study aimed determine feasibility of digital for class X materials. Methods: Research and Development use ADDIE model. The product is validated by expert validators, material experts, teachers. Product trials on were divided...

A visible-light digital camera is used for taking ordinary photos, but with new operational procedures it can measure the photon energy in the X-ray wavelength region and therefore see chemical elements. This report describes how one can observe X-rays by means of such an ordinary camera - The front cover of the camera is replaced by an opaque X-ray window to block visible light and to allow X-...