Doctoral Thesis on "Methodology for implementation of selected instruments improving quality" deals with the management and quality assurance, disagreements and effects tools for improving the quality on different types of disagreements. The first part is an introduction, which outlines the definition of quality and its problems today. In the overview of the current state of knowledge, are described in more detail individual tools for quality improvement, defining disagreements and their management. Another part consists of the hypothesis and defines the objectives of the work. The fourth section is devoted to materials and methods that will be used to achieve the objectives set. The last chapter presents already achieved partial and expected results.