Nonlinear diagnostic systems (NLS) have been widely used recently and are becoming increasingly popular. Even in the rare cases where the clinical symptoms appear very typical, diagnostic methods provide additional information about the extent of the effect and allow prognosis to be considered. In most cases, it is crucial for diagnosis and subsequent selection of the correct treatment.

Nonlinear analysis was originally used in organic chemistry to determine the composition of complex compounds. Sviatoslav Pavlovich Nesterov introduced the trigger sensor and thus the concept in 1988 and is considered the originator of NLS diagnostic equipment (Meta Hunter). Active work began immediately to develop and improve the NLS diagnostic system. Clinical testing of early devices took place from 1990 to 1995. Commercial production of the device grew rapidly in the late 1990s, and the quality of the results produced suddenly soared.

Thanks to the introduction of some new devices equipped with digital trigger sensors, NLS diagnostics have become not only more time-efficient but also completely different in terms of quality. It is clear that some runtime techniques such as tree-dimensional visualization of survey results will soon become routine practice. Negative testing is just one example of an off-the-shelf implementation. The method is so widely used that we would rather talk about a clear scope of its use rather than just its popularity.

NLS methods not only advance along the path of technological innovation, but also along the path of new applications. Some minor surgical procedures, such as biopsies, have long been monitored using ultrasound, fluoroscopy, or computed tomography. Today we had the opportunity to perform a biopsy for NLS surveillance. By the way, many surgeons specialize in using this method to assist in major surgeries.

The equipment cost for NLS diagnostics remains very low compared to some other hardware-based methods. This should promote wider use of this approach in countries with low living standards. Among all hardware-based diagnostic methods, NLS provides the closest representation to the pathological anatomy. This feature of the method and its harmlessness have facilitated the rapid development of NLS diagnostics.

More and more devices now use NLS diagnostic technology, such as Meta Hunter. They play an important role in people's health problems.