What is a panel flat detector?

A panel flat detector is a device that allows to realize a X-ray photography providing a digital radiological image to the instant. They are made of two topologías: in format "cassette" or integrated inside an equipment. In general, does one refer to this type of device under the initials DR for " digital radiology " 1? Unlike other systems that work only with " cassette escaneable in two steps " (plate of phosphorus fotoestimulable PSP) called CR " X-rays computarizada ".

 Those who work with "cassette" have a rectangular form with an active surface that goes from 5 x 5cm up to 60 x100cm with a thickness from 1 to 10 cm. The most common size used in human medicine is of 36 x 43 cm (14 x 17 inches).

According to the physical used beginning, these detectors divide in two principal groups:

• Detectors of direct conversion: The X-rays turn directly into an electrical sign (technology CMOS)
•  Detectors of indirect conversion: The X-rays turn into photons (technology of amorphous silicon or selenium) that in turn are turned into an electrical sign.

 The detectors are generally two-dimensional, but there are some versions in which a linear detector of an alone dimension moves to a constant speed along the whole active surface of the panel (as the typical scanner of computer), generating the second dimension.