Siemens Aktiengesellschaft

Rudolf Ackermann

Rainer Alfred Kuth

Sultan Haider

Klaus Ludwig

Holger Dresel

Hans Huebsch

Reinhard Rueckriem

In a method for representation of medical image information on a display medium an image representation parameter is varied dependent on the position of the observer. Superimpositions of data sets from different medical examinations are thereby displayed. The observer thus has simultaneous access to information from the medical examinations, which makes the diagnosis easier for him or her.

Method for displaying medical image information dependent on a detected position of the observer

In a method for selectively enabling or blocking the use of medical equipment made available by a vendor or a system option in the medical equipment, for a customer, wherein the equipment is arranged in a facility of the customer, a compilation is created and stored at a vendor's computer from which it proceeds whether the customer is permitted to use the medical equipment overall or which system option of the medical equipment the customer is permitted to use. Given a desired utilization of the medical equipment or a system option of the medical equipment by the customer, a check is made at the vendor's computer as to see whether the customer is authorized for the use and whether costs arising from previous use are to be paid. The use is automatically enabled when the authorization still exists and no costs are outstanding, or the use is automatically inhibited when there is no authorization or costs are still outstanding.

Method for selectively enabling or blocking the use of medical equipment

A computer tomography system, in addition to conducting a standard computer tomography scan, is capable of producing a shadowgraph prior to conducting the computer tomography examination with the measurement unit in a locked position, as well as one or more real time shadowgraphs during the computer tomography examination. The shadowgraph obtained with the measurement unit in the lock position can then be superimposed with one or more of the real time shadowgraphs obtained during the tomography examination, and the superimposed image displayed, so that patient and/or organ movement arising during the computer tomography examination can be immediately visually perceived.

Computer tomography apparatus having means for producing a shadowgraph

An exemplary embodiment operates according to the principle of non-linear manipulation of the brightness distribution of video pictures by means of matching the brightness distribution (histogram) to a prescribed function F(H). An arithmetic unit with a histogram memory determines the histogram of a video image. A processing circuit is connected to the histogram memory and calculates correction values from the histogram for example during a vertical blanking interval so as to convert the current image point information into corrected image point information in accord with the prescribed function F(H), the corrected information being read into a correction memory. The image point information of a video image is supplied to the address input of the correction memory for conversion in accord with the correction values stored there.

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Buckenhof, Germany

Rudolf Ackermann