DR Flat Panel
Flat Panel Systems have proven to be cost effective when upgrading or retrofitting your equipment to a State of the Art digital imaging suite. This technology is changing rapidly and although there are only a few manufacturers of DR glass world-wide, flat panels are marketed under at least two dozen different trade names.
DICOM Disribution has been integrating flat panels for years, and have worked with nearly every brand-name manufacturer in the world as well as many independents. We have extensive experience with products marketed by Carestream, Canon, CMT, Del Medical, DR Tech, Fuji, Quantum, Samsung, Toshiba, Trixell, Varian and several less known suppliers. Based on our experience we can guide you through technical selection, budgeting, integration and post-warranty service considerations
The price difference between DR technology and CR has recently dropped tremendously. If you are considering a transition to DR, please call us prior to finalizing your purchase.
Flat Panel Digital X-ray detectors can be divided into two classes. They either use a direct technique (direct-conversion detectors) or an indirect technique (indirect-conversion detectors) for converting X-rays into an electric charge.
- Direct-conversion detectors have an X-ray photoconductor, such as amorphous selenium, that directly converts X-ray photons into an electric charge.
- Indirect-conversion detectors have a scintillator that first converts X-rays into visible light. That light is then converted into an electric charge by means of photodetectors such as amorphous silicon photodiode arrays or CCDs. Thin-film transistor (TFT) arrays may be used in both direct- and indirect-conversion detectors.
In both direct- and indirect-conversion detectors, the electric charge pattern that remains after the X-ray exposure is sensed by an electronic readout mechanism, and analog-to-digital conversion is performed to produce the digital image. DR is a self-scanning, direct-readout X-ray image acquisition technology which makes use of CCD detectors or flat panel digital detectors based on amorphous selenium or amorphous silicon.
Direct-conversion flat panel detectors - amorphous selenium
The selenium-based technology uses an amorphous selenium-coated thin-film-transistor (TFT) array to capture and convert X-ray energy directly into digital signals. It is a direct-conversion technology that converts X-ray beams into electric charges directly. No light-emitting materials as with CR systems, no intermediate steps or additional processes as with silicon-based systems or CCD systems are required to capture and convert the incident X-ray energy. Under a bias voltage applied across the detector structure, incident X-rays directly generate electron-hole pairs in the selenium layer. These charges are collected by individual storage capacitors associated with each detector element for readout by customized electronics within the array.
Indirect-conversion flat panel detectors - amorphous silicon
A second type of Digital Imaging Sensor is based on amorphous silicon. This type of flat-panel sensor uses thin films of silicon integrated with arrays of photodiodes. These photodiodes are coated with a crystalline cesium iodide scintillator or a rare-earth scintillator (Terbium-doped Gadolinium dioxide sulfide). When these scintillators are struck by X-rays, visible light is emitted proportional to the incident X-ray energy. The light photons are then converted into an electric charge by the photodiode arrays. Unlike the selenium-based system, this type of indirect-conversion detector technology requires a two-step process for X-ray detection, i.e. the scintillator converts the X-ray beams into visible light, and light is then converted into an electric charge by photo-detectors, such as amorphous silicon photodiodes.
Indirect-conversion CCD detectors
The oldest indirect-conversion DR system is based on charge-coupled devices (CCDs). These arrays record light created by the impact of X-rays on a scintillation material, such as photostimulable phosphors. The most salient characteristic of CCDs is that they are relatively small – typically 2-4 cm2, which is much smaller than typical projected X-ray areas. Because of this, CCD-based systems require optical coupling to reduce the size of the projected visible light image and transfer the image to the face of one or more CCDs. Although CCD-based detectors require optical coupling and image demagnification, they are attractive because they are both widely available and relatively low in cost.
Konica Minolta Medical Imaging USA, Inc. is a leading domestic manufacturer of digital and traditional imaging products for diagnostic use by hospitals, imaging centers, clinics, and private-practice physicians. A proven leader in the digital Konica Minolta products include REGIUS Computed Radiography and DR systems...
DICOM Distribution is an Independent INTEGRATOR, which means that we can and will recommend different products from many different manufacturers. By representing many brands of products, we are better able to tailor a solution for any given project or budget. While one manufacturer may specialize in x-ray systems they may not always offer the best CR solution. This is also true for PACS, (Picture Archive Communication System). Many CR manufacturers do not offer the best PACS solution specific to the needs of your practice. DICOM Distribution can integrate these components from different manufacturers; thus providing our customer with a solution that is tailor made for their specific practice needs.
Here are our DR Solutions...
Manufacturers
Types
Product Bundles
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- 24/7 LEAD Customer Support
- 200 Years of Medical Experience
- PACS, RIS, CR etc. supported all from one lead company.
- Fully Dicom and HIPAA Compliant.
- Proven technology that is working in Hospitals, Imaging Centers and Clinics
- Reference Account
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For more information, please contact 877-434-2661 or email info@dicomdistribution.com
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