Abstract: A medical data processing method of determining anatomical structure subset data describing a subset of a graphical representation 9 of an anatomical structure of a patient's body to be displayed simultaneously with a medical image of an anatomical body part 1, the method being constituted to be executed by a computer and comprising the following steps: a) acquiring predetermined anatomical structure representation data describing a graphical representation of the anatomical structure and its position in the patient's body; b) acquiring anatomical body part image data describing an image of an anatomical body part 1 of the patient imaged by an optical imaging apparatus 2 for display by a display apparatus 3; c) acquiring optical parameter data describing an optical parameter WD serving as a basis for displaying the anatomical body part image data; d) determining, based on the anatomical structure representation data and the anatomical body part image data and the optical parameter data, anatomical structure s

Abstract: A medical data processing method of determining anatomical structure subset data describing a subset of a graphical representation 9 of an anatomical structure of a patient's body to be displayed simultaneously with a medical image of an anatomical body part 1, the method being constituted to be executed by a computer and comprising the following steps: a) acquiring predetermined anatomical structure representation data describing a graphical representation of the anatomical structure and its position in the patient's body; b) acquiring anatomical body part image data describing an image of an anatomical body part 1 of the patient imaged by an optical imaging apparatus 2 for display by a display apparatus 3; c) acquiring optical parameter data describing an optical parameter WD serving as a basis for displaying the anatomical body part image data; d) determining, based on the anatomical structure representation data and the anatomical body part image data and the optical parameter data, anatomical structure s

Abstract: A ring gauge includes an entry zone followed by a measuring zone defined by a guide cylinder in which is installed an air jet measuring system. The entry zone includes a first region exhibiting an opening substantially larger than the opening of the guide cylinder then a second region including a spring support guide structure which defines a circle the diameter of which is equal to the diameter of the guide cylinder opening, and finally a third tapered region having an entry diameter substantially greater than that of the guide cylinder opening and an exit diameter equal to that of the guide cylinder opening. The gauge is employed for checking the outer diameter of cylindrical parts which may penetrate therein without jamming.