Small Irradiators

Our first product, now undergoing development and testing in preparation for FDA approval, is the self-contained blood irradiator (SCBI).  This does not make the blood sterile:  it inactivates T-leukocytes in order to prevent graft versus host disease.  Variations of SCBI could be used for many other applications such as materials processing or seed growth termination. Research irradiators for radiobiology and radiochemistry applications are also under development in high voltage, high power and digitally addressable versions.

Sterilization Systems

These will be larger systems designed for continuous processing of medical products, food and other items which require penetrating radiation for sterilization of pathogens. Medical products are preferably sterilized in their packages and penetrating radiation is a good alternative in many cases. Current product sterilization facilities use high-energy X-rays produced with megavolt electrical sources such as linear accelerators, or, more commonly, gamma rays from radioactive isotopes. These facilities require massive concrete walls for radiation shielding, making them costly and centralized. Conveyor belt sterilization systems using FPXS panels will use lower, safer energies, be largely self-shielding, reduce capital and operating costs by 90%, and bring sterilization close to the point of production. The savings in inventory costs to manufacturers could be large. Elimination of shipping costs could also make food sterilization economically more attractive than it is today.

UV-C Fluid Treatment

Stellarray has made prototypes of UV-C panels and UV-C pipes which offer significant advantages over the medium pressure mercury lamps used in the radiation treatment of drinking water and effluent water streams. These include higher power efficiency, high power levels, tunable power, no mercury content, ease of maintenance and a high degree of scalability. Smaller versions can be used to sterilize other fluid flows, particularly in medicine.

Medical Imaging

DAXS smart sources will be used primarily in imaging applications, where they will replace mechanical gantries with digital addressing of X-ray pixels for CT systems with no moving parts.   We have worked with the MD Anderson Cancer Center on digital tomosynthesis in an NIH-supported project to improve the accuracy of breast cancer screening and in another NIH project for four-dimensional CT, which will be used in applications including angiogenesis imaging.  Later non-contact mammography systems will use alternating DAXS sources and electronic detectors.  We have worked with the UVa Medical Center in an NIH project for a pre-clinical small animal imaging system, an area of increasing importance due to growing needs for mouse models and the recent mapping of the mouse genome.  Current systems are expensive and provide poor images of the cardiovascular system since the mouse heart rate is over 500 beats per minute.  DAXS panels will also be combined with flat panel detectors in portable CT or tomosynthesis systems for underserved populations, battlefield and emergency medicine, and emerging markets.