Abstract: A localizing unit for an X-ray diagnostic system covered with a sterile drape is provided. In one embodiment, the localizing unit can be sterilized and has an adapter, which includes a mechanism for puncturing the sterile drape and a mechanism for temporarily securing the sterile drape on a housing of the X-ray diagnostic system. The adapter may be detachably held in predetermined holders on the housing of the X-ray diagnostic system and may be positioned on the housing in a reproducible manner. In some embodiments, the mechanism for temporarily securing the sterile drape on the housing includes an elastically deformable, surrounding seal, which upon positioning the adapter, produces a force on the sterile drape in a direction perpendicular to the surface of the housing.

Abstract: Embodiments of an X-ray diagnostic imaging system comprise a plurality of coded 2D and/or 3D markers associated with surfaces of system components. The position and coding of at least some of the coded markers can be determined by a position detection system. In some embodiments, a coded marker is assigned a reference point having a known position on the surface of the system component. The positions of the system components in space can be calculated based at least in part on a reference point network determined from the position of the individual reference points measured with the position detection system. In some embodiments, the coded markers represent information with a data matrix code (DMC).

Abstract: Embodiments of an X-ray source for a mobile X-ray diagnostic unit with a C-arm include a generator vessel that may be mounted to a hollow frame of the C-arm. The generator vessel may have a first subregion with a high-voltage generator and a second subregion with an X-ray source. In some embodiments, the first subregion, the second subregion, or both subregions may be at least partially inside a portion of the hollow frame of the C-arm. The generator vessel may be at least partially filled with insulating oil for cooling the high-voltage generator and/or the X-ray source.

Abstract: A travel stand for a mobile X-ray diagnostic machine with a laser detection system containing measurement devices to determine the position of the travel stand in a spatially fixed system of coordinates is provided. The measuring devices can operate by non-contact measurement techniques and that the position of the travel stand can be determined by techniques such as triangulation. An X-ray diagnostic machine with such a position detection system offers advantages in the 3D reconstruction from 2D X-ray projection images and in navigationally guided operations under X-ray monitoring.

Abstract: The subject matter of the present application relates to methods for calibrating an X-ray diagnostic system and apparatus for use in the calibration methods. In one embodiment, the apparatus includes a position detection system having an acquisition unit. An X-ray phantom is disposed near the acquisition unit in a known position and/or orientation relative to a coordinate system of the position detection system. The X-ray phantom may be detachably mounted on the acquisition unit.

Abstract: Embodiments of an X-ray source for a mobile X-ray diagnostic unit with a C-arm include a generator vessel that may be mounted to a hollow frame of the C-arm. The generator vessel may have a first subregion with a high-voltage generator and a second subregion with an X-ray source. In some embodiments, the first subregion, the second subregion, or both subregions may be at least partially inside a portion of the hollow frame of the C-arm. The generator vessel may be at least partially filled with insulating oil for cooling the high-voltage generator and/or the X-ray source.

Abstract: Embodiments of an X-ray diagnostic imaging system comprise a plurality of coded 2D and/or 3D markers associated with surfaces of system components. The position and coding of at least some of the coded markers can be determined by a position detection system. In some embodiments, a coded marker is assigned a reference point having a known position on the surface of the system component. The positions of the system components in space can be calculated based at least in part on a reference point network determined from the position of the individual reference points measured with the position detection system. In some embodiments, the coded markers represent information with a data matrix code (DMC).

Abstract: The disclosure relates to a localizing unit for an X-ray diagnostic system covered with a sterile drape. In one embodiment, the localizing unit can be sterilized and has an adapter, which includes a means for puncturing the sterile drape and a means for temporarily securing the sterile drape on a housing of the X-ray diagnostic system. The adapter may be detachably held in predetermined holders on the housing of the X-ray diagnostic system and may be positioned on the housing in a reproducible manner. In some embodiments, the means for temporarily securing the sterile drape on the housing includes an elastically deformable, surrounding seal, which upon positioning the adapter, produces a force on the sterile drape in a direction perpendicular to the surface of the housing.

Abstract: The subject matter of the present application relates to methods for calibrating an X-ray diagnostic system and apparatus for use in the calibration methods. In one embodiment, the apparatus includes a position detection system having an acquisition unit. An X-ray phantom is disposed near the acquisition unit in a known position and/or orientation relative to a coordinate system of the position detection system. The X-ray phantom may be detachably mounted on the acquisition unit.

Abstract: A travel stand for a mobile X-ray diagnostic machine with a laser detection system containing measurement devices to determine the position of the travel stand in a spatially fixed system of coordinates is provided. The measuring devices can operate by non-contact measurement techniques and that the position of the travel stand can be determined by techniques such as triangulation. An X-ray diagnostic machine with such a position detection system offers advantages in the 3D reconstruction from 2D X-ray projection images and in navigationally guided operations under X-ray monitoring.

Abstract: Phosphate-containing, glycol-based coolant mixtures which are stable in hard water and are free of nitrites, silicates, amines and borates containa) 0.5-3% by weight of ammonium and/or alkali metal phosphateb) 2-5.5% by weight of ammonium or alkali metal benzoatec) 0.2-1.5% by weight of ammonium or alkali metal molybdated) 0.2-0.8% by weight of ammonium or alkali metal nitratee) 0.05-0.4% by weight of benzotriazolef) 0.05-0.4% by weight of tolyltriazoleg) 0.005-0.35% by weight of a water-soluble magnesium compoundh) 0.02-0.5% by weight of an oligomeric or polymeric carboxylic acid with a molecular weight of 1,000-100,000,i) 0.05-5% by weight of water and the amount of glycol necessary to make up to 100% by weight.

Abstract: The Al.sub.2 O.sub.3 carrier material from Ag/Al.sub.2 O.sub.3 supported catalysts which is obtained after the silver has been removed from such spent catalysts in a conventional manner is regenerated by a method in which the carrier material(a) is treated with an aqueous solution of a water-soluble salt or hydroxide of a metal of group IIA, IIIB or IVB of the Periodic Table or of aluminum, copper, manganese, zinc, cadmium, tin or lead, and the material treated in this manner is then dried, and/or the material(b) is heated at 750-1,500.degree. C. for not less than 10 minutes.

Abstract: The subject invention relates to a process for regenerating silver-containing carrier catalysts used in the preparation of ethylene oxide which comprises treating a deactivated catalyst with a solution comprising a potassium, rubidium, or cesium compound and a reducing agent. The subject process provides improved catalyst regeneration.

Abstract: Butynediol is prepared by reacting acetylene and formaldehyde in contact with a heavy metal acetylide as catalyst, in the liquid phase by the Reppe method. Acetylene is fed upwardly through a suspension of the catalyst in formaldehyde at such a rate that it is virtually completely consumed and a liquid zone containing no catalyst is formed above the suspension.