Siemens Aktiengesellschaft

Jockenhövel, Stefan

Andreas Mahnken

Bernhard Schmidt

Bjoern Heismann

Thomas Schmitz-Rode

Gabriel Haras

Martin Sedlmair

Thomas Gries

Annabella Rauscher-Scheibe

Thorsten Deichmann

Stefan Weinandy

An example of the invention relates to a method for the multidimensional reconstruction of image data in a reconstruction area based on projection measurement data which has been acquired using an imaging system, preferably a computed tomography system, wherein the reconstruction is carried out in three different spatial directions with predefined resolution widths; a resolution width in at least one spatial direction being automatically adapted to a resolution width in another spatial direction, such that the adapted resolution widths are substantially identical.

Isotropic reconstruction of image data

A method for generating a tomographic temperature map in a patient by use of a CT device, a computing unit and CT system with computing unit are disclosed. In at least one embodiment of the method, the local distribution of density and mean atomic number is determined on the basis of tomographic image data from different X-ray energy regions, and a local temperature distribution in the tissue of the patient is ascertained from previously experimentally determined or theoretically calculated relations between Z values, density and temperature.

Method for generating a tomographic temperature map in a patient by way of a CT device, control and computing unit and CT system

A method is disclosed for providing tomographic pictures of a patient with the aid of a tomographic system by using contrast medium injections. The patient is firstly injected with a defined test bolus, while the temporal concentration profile of the contrast medium in at least one body region is determined in at least one scanning plane. The functional parameters of a prediction model that maps or at least approximates the relationship between the profile of a contrast medium injection and the temporal profile of the contrast medium concentration in the body region are determined from the measured profile of the contrast medium concentration in relation to the profile of the test bolus injection. After the specification of a desired contrast in the body region, the profile of a contrast medium injection that is required therefore is automatically calculated in temporal relationship with the scan, and the start of the tomographic scan and the start of the contrast medium injection and the profile thereof are started automatically in a fashion temporally tuned to one another.

Method and system for providing tomographic pictures of a patient by using contrast medium injections

A method and a device are proposed for determining the type of fluid in a fluid mass in an object. X-ray attenuation data is supplied from one or a plurality of X-ray recordings of an object area including the fluid mass in the object, which were acquired with at least two different X-ray spectra or detector weightings. The X-ray attenuation data is used to determine values for effective atomic number and density for the fluid mass and average these to obtain a mean value for effective atomic number and density for the fluid mass. Comparison data is also supplied, which indicates fluctuation ranges for combinations of effective atomic number and density for different types of fluid. The mean values for effective atomic number and density of the fluid mass are compared with the comparison data to determine the fluctuation range and thereby the type of fluid, into which the two mean values fall. The method and associated device can be used to determine the type of fluid in a fluid mass in an object in a reliable and unambiguous manner.

Method and device for determining the type of fluid in a fluid mass in an object

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Aachen, Germany

Andreas Mahnken