Digital Xray - CR/DR

Computed Radiography

(CR) uses very similar equipment to conventional radiography except that in place of a film to create the image, an imaging plate (IP) made of X-ray sensitive phosphor is used. The imaging plate housed in a special cassette and placed under the body part or object to be examined and the x-ray exposure is made. Instead of taking an exposed film into a darkroom for developing in chemical tanks or an automatic film processor, the imaging plate is run through a special laser scanner, or CR reader, that reads the image. The digital image can then be viewed and enhanced using software that has functions very similar to other conventional digital image-processing software, such as contrast, brightness, filtration and zoom.

• CR systems eliminate film and the chemicals that are required to process film

• Processors require constant running water; CR systems use no water significantly reducing water utility bills, waste, and plumbing issues associated with processors

• CR systems reduce repeat rates which reduces radiation dose to patients

• Digital images can be enhanced using software with functions such as contrast, brightness, collimation, zoom, etc

• Images can be sent anywhere on your network 

Digital Radiography

Recently imaging and diagnostic centers are transitioning to filmless solutions by purchasing DR (Digital Radiography) technology. Over one-third of the hospitals in the United States have already selected DR as their preferred imaging solution.  Just like CR technology, DR has dramatically improved in quality and price since it was introduced more than 10 years ago.

• The Silicon detector is the most popular type of FPD (Flat Panel detector). The Silicon detector, considered indirect image capture technology, is made of Cesium Iodide or Gadolinium Oxysulfide.

• The Selenium detector is the second type of FPD (Flat Panel detector). The Selenium detector is known as direct image capture technology because no X-ray energy conversion takes place within the detector

• Last is the High Density Line Scan Solid State type of DR detector.  This phosphor detector records the X-ray energy during exposure, is scanned by a linear laser diode to excite stored energy, and is read by a digital image capture array of CCD’s (Charge Coupled Devices).

Each type of detector is very different and has advantages and disadvantages associated, so it is highly recommended to review the pro’s and con’s with Raynostix to find out which technology is best suited for your facility. 

Below is a list of advantages of DR:

• DR systems reduce repeat rates which reduces radiation doses to patients

• Reduces costs associated with processing, managing and storing films

• Immediate image preview

• The ability to digitally transfer and enhance images