2018

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.