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1 Introduction
The X-Ray analysis has developed constantly over time since Wilhelm R¨ontgen discovered
it’s applications. X-Rays are now used not only for simple radiography. Modern
algorithms are capable of reconstruct a three dimensional view of the object, allowing us
to recover important information about the inside of the object to study, for example, a
human body. Ionizing radiations like X-Rays have also been used to discover the structure
of the DNA thanks to X-Ray diffractometry.
This project aims to explore the technologies of 2D radiography (sections 10 and 11) and
3D tomographic scans (section 12), and for that, a 3D printable machine is designed, built
and tested using a long list of software, tools and parts [28]. One of these parts is an
improved Zero Voltage Switching (ZVS) Mazzilli driver, optimized for higher frequency
(section 2.1.3). The design and testing is done considering safety, as described in section 9.
A Geiger counter is used to ensure that the device is safe to operate and that the operator
is not exposed.
In addition to the device, three programs written in C++ have been developed. The
first one is an original implementation of the inverse Radon transform to perform tomographic
reconstructions of the data gathered wih the X-Ray machine and it’s explained
in appendix A. The second program, found in appendix B, uses an original algorithm
for pseudocolor radiography that tries to improve other algorithms that usually saturates
the color of the result. The last program is a numerical model of the Mazzilli ZVS transformer
driver inside the machine and it provides useful information about the voltages
and currents involved depending on some circuit parameters. It’s found in appendix C.
