1. The guidance system (10) for guiding the instrument (12, 100, 100A, 100B, 112) inside the body (14), while the guidance system (10) comprises: a medical imaging device (18) configured to form an image of the inner region body (14), a device (16, 102) for determining the type of tissue, configured to receive a tissue signal from the instrument (12, 100, 100A, 100B, 112), and the device (16, 102) for determining the type of tissue is configured to determine a set parameters indicating the type of tissue based on the tissue signal from the instrument (12, 100, 100A, 100B, 112), moreover, the guidance system (10) is configured to determine the position of the tool (12, 100, 100A, 100B, 112) and to save a sequence of positions, and the guidance system (10) is configured to create a displayed image combining the image the inner area of the body and a set indicating the type of tissue parameters displayed in the recorded positions of the instrument (12, 100, 100A, 100B, 112), and a display device (22) configured to display the displayed image, characterized in that the device (16, 102 ) fabric type determination is capable of working in two modes, while in the first mode, fabric type determination is performed with the first calculation accuracy, and in the second mode, fabric type determination is performed with the second calculation accuracy higher than the first calculation accuracy. 2. The guidance system (10) according to claim 1, further comprising: an instrument speed analyzer for determining the current instrument speed (12, 100, 100A, 100B, 112), while if the current tool speed (12, 100, 100A, 100B, 112 ) above the speed threshold, the tissue type determination device operates in the first mode, if the current tool speed is lower than the speed threshold, then the device1. Система (10) наведения для наведения инструмента (12, 100, 100A, 100B, 112) внутри тела (14), при этом система (10) наведения содержит:устройство (18) медицинской визуализации, выполненное с
