Publication

To characterize the performance of X-ray detectors in a transparent and reproducible way, a variety of physical measures have evolved. The most important performance parameters are (1) dynamic range, (2) MTF (modulation transfer function), (3) DQE, and (4) image lag. These high-level parameters are fundamentally...

The development of LCD (liquid crystal display) technology for the consumer market as a replacement for monitors based on cathode ray tubes, has made a technology available whose characteristics are also ideally suited for sensors in medical X-ray imaging. It is based on hydrogenated amorphous silicon...

Analog signal, Archive, Baud, Bit (binary digit), Bit depth, Bits per second, Cathode ray tube (CRT), Central processing unit (CPU), Charge-coupled device (CCD), Charge-coupled device scanner, Complementary metal oxide semiconductor (CMOS), Detective quantum efficiency (DQE), Digital Imaging and Communications...

Performance monitoring must be done on each digital radiography device. Performance testing and monitoring of digital display equipment should be maintained in accordance with the equipment manufacturer specifications, applicable industry guidelines, and state and federal regulations. In the absence...

Display workstations used for the official interpretation of large-matrix systems should be capable of the following: bringing an image up on the workstation in 3 seconds or less; selection of image sequence and display format; flexible hanging protocols tailored to user preferences, with proper labeling...

Display device guidelines are currently divided according to two basic categories of digital image data set size when used for rendering an official interpretation: small matrix size (eg, computed tomography, magnetic resonance imaging, ultrasound, nuclear medicine, digital fluorography, and digital...

Image quality is affected by several factors, beginning with the acquisition process and device and including the manner in which images are displayed. In digital systems, the functions of acquisition and display are clearly separable, so that the evaluation and optimization of image quality can take...

In the late 1990s—about 100 years after the discovery of X-rays by Wilhelm Conrad Röntgen—flat detectors were first introduced in medical X-ray diagnostics. Since then this new technology has set out to become the prime standard in digital X-ray imaging. In general projection radiography and mammography...

Many people confuse DPI with PPI. Even though the terms "dots per inch" (DPI) and "pixels per inch" (PPI) are used interchangeably by many, they are not the same thing. In many instances the term DPI is used when in fact PPI is what is really meant.