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Digital X-ray Imaging

Digital X-Ray Imaging

Analogic’s digital imaging technology enables medical professionals to receive high quality diagnostic imaging with less radiation exposure risk to the patient. We have several options for imaging systems designed to work with the needs of small to large hospitals and healthcare facilities.

Here are some of the ways Analogic’s digital systems and expertise are working to change the medical field, saving lives and providing support for medical practitioners in both healthcare and imaging facilities.

 

Flat Panel X-ray Detectors

Flat panel X-ray detector (FPXD) technology and digital radiography have developed rapidly in the last decade. These advancements fueled by several factors including:

  • improvements in large-area amorphous Silicon (α-Si)thin-film transistor (TFT) arrays
  • innovations in deposition techniques forscintillators and photoconductors.

 

As x-ray systems improve, medical professionals are better able to diagnose and treat conditions requiring x-ray images. Analogic’s technology not only improves efficiency; our flat panel detector is helping doctors provide accurate diagnosis and improve patient care.

Several types of FPXD are commercially available today for digital medical imaging. Our flat-panel detectors are based on amorphous selenium technology on TFT arrays. Doctors receive high-resolution images with excellent image quality and contrast. In addition, quicker image processing, and a high frame rate speed the time to diagnosis.

 

Direct vs. Indirect Radiography and X-ray Conversion

Two conversion methods can be used in digital X-ray imaging: direct and indirect. The direct conversion method transforms X-ray energy resolution directly into electrical charges within a semiconductor. The indirect conversion requires an intermediate step: X-ray energy is first converted into light by a scintillating medium before conversion into electrical charges by a photodiode.

With indirect detection, the light generated by the X-ray interaction in the scintillator spreads in every direction and consequently degrades the spatial resolution. Needle-type scintillators can greatly help in guiding the light to a pixel, but a certain degree of light still will spread to neighboring pixels.

 

Why Use Direct Radiography and X-ray Conversion

The direct X-ray conversion method has the main benefit of having a higher modulation transfer function (MTF), leading to a high spatial resolution and highly contrasted images. Where traditional x-rays left a margin of error, digital detectors reduce that margin. There are several reasons to choose digital images over traditional x-ray technology.

  • Directdigital radiography systems are filmless, unlike traditional film radiography, which requires the classic x-ray film many people are used to.
  • Digital x-ray image acquisition reduces waste and overhead for healthcare facilities while allowing for direct data capture during a patient session.
  • The digital image goes straight to a computer for a reduction in radiation dosewith no loss of clarity. Conventional radiography does not provide dose efficiency.

 

Patented Amorphous Selenium Technology

Our patented Selenium structure includes blocking layers that permit fast image readout and high dynamic range. Our Selenium technology is suitable for both static and dynamic imaging. Find out how Analogic’s cutting-edge digital technology can improve patient care, provide real time data capture, and improve picture archiving for easier patient records.