X-ray is one kind of electromagnetic wave with strong penetrability that can even penetrate the steel plate with certain thickness. So it is usually utilized for fluoroscopic imaging of different objects. Since 1895 when X-ray was discovered by Wilhelm Röntgen, the famous German physicist, it was firstly used in medical imaging and diagnosis. Later, in more than one hundred years that follow, X-ray had played significant role in various areas including medical, security inspection, nondestructive testing and industrial inspection. X-ray imaging technology is the most fundamental as well as the first method that has been used in contraband inspection.
NUCTECH COMPANY LIMITED, with radiation imaging as its core technology, is a security inspection solution and service supplier producing high-tech security inspection products with proprietary intellectual property rights. Based on high energy radiation imaging technology and by receiving the continuous x-ray spectrum generated by the accelerator (highest boundary energy ranges from 1MeV to 9MeV), NUCTECH has successfully developed various series of inspection system including fixed, mobile and relocatable container/vehicle inspection system, train inspection system and fast-scan inspection system, among which many are the very first of their kinds. All the systems are designed with high-quality imaging system and high penetration technology and the hardware and software can be tailor made according to customers’ requirements. Now, NUCTECH high energy inspection systems are widely used in various fields including containers inspection at customs, air cargo screening and train inspection.
Low energy x-ray imaging technology is mainly used in the baggage inspection system. NUCTECH baggage inspection systems are designed with more advanced x-ray generators, high-resolution detectors, higher level image processing algorithms, ergonomic-principle-based user interface and diversified network programming for higher operation efficiency. Taking the threats in various industries into account, NUCTEH total solution for security inspection can effectively detect various kinds of hazardous items and contrabands including explosives, weapons, flammables, erosive items, candid cameras, wiretaps, radioactive substance and chemical and biological weapons. With flexible configuration, high efficiency and user-friendly design, the security solutions can meet the needs in all industries.
Dual-energy imaging technology was first used in the field of medical imaging and quickly got spread out widely in bone mineral density measurement in late 1970s. However, it remained a worldwide problem to make use of the high-energy and dual-energy x-ray generated by the accelerator and to apply it to inspect containers. In 2001, NUCTECH developed the world first dual-energy x-ray container/vehicle inspection system. Through special processing, the system can inspect containers by two different types of x-ray with different energy generated by the same accelerator. While producing two pieces of fluoroscopic image, the system can measure the equivalent atomic numbers of the goods in the containers so as to distinguish the materials including organic, inorganic and nuclear materials, which greatly boosted the capability of identifying the materials inspected. Now, dual-energy imaging technology is becoming increasingly mature and it’s gradually used in all security inspection systems of NUCTECH.