The two main technology formats available in Digital Radiography are Charge Coupled Device (CCD) based detectors and Flat Panel Detectors (either direct or indirect capture).
At the core of the IDC DR technology consists a very high density CCD (VHD CCD),a lens, and a scintillator Light from the scintillator is deflected by a mirror into the lens which focuses light onto the 9 or 16 Megapixels of the CCD. A crucial difference between this and Flat Panel technology is IDC’s VHD CCD based detector does not have any electronics in the radiation field. Flat Panel systems - either direct or indirect - use thin film transistor (TFT) layers that capture the medical x ray generated electrons. Unlike CCD technology, the electronics in Flat Panel systems are in the direct radiation beam which causes degradation to the electronic components and can cause them to fail. To better protect the electronics, and reduce the risk of failure; Flat Panel manufacturers “harden” them, a process which reduces the efficiency of the conversion process.
Additionally, these complex electronic devices have layers of components that are surrounded by protective casings. In order to produce the Flat Panel technology, an array of smaller devices are tiled together which prevents an entirely seamless x-ray image to be produced; allowing for critical information in the x-ray image to potentially be overlooked by the Radiologist.
Another important difference between CCD and Flat Panel technology pertains to fill factor. The higher the fill factor, the higher the resolution of the image and the lower
the dose needed. IDC has 100% fill factor. This means out of the 9 Million or 16 Million pixels in the two different platforms of the IDC technology, 100% of the pixel area is used. The Flat Panel technology has far lower fill factors because of the electronics running through each pixel which reduces the x-ray capture surface area.

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