Angiographic method and apparatus allowing identification of contrast agent propagation
AssigneeSiemens Aktiengesellschaft
InventorSebastian Schmidt
Life of this patent
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Abstract
In a method and apparatus for acquisition of angiographic data sets of a region of an examination subject, into whose bloodstream a contrast agent has been introduced, a data set of the region to be examined is acquired during a first propagation phase of the contrast agent in the bloodstream as a reference data set to determine reference data, additional data sets of the region to be examined are then acquired, and based on the reference data, variations that are caused in at least some of the additional data sets due to the arrival of a second propagation phase of the contrast agent are determined, and the arrival of the second propagation phase of the contrast agent in the bloodstream is identified based on the determined variations.
Claims29
A method for acquiring angiographic data sets of a region of an examination subject in whose bloodstream a contrast agent has been introduced, comprising the steps of;
- acquiring an angiographic data set of a region of the examination subject to be examined during a first propagation phase of the contrast agent in the bloodstream, as a reference data set containing reference data;
- acquiring additional angiographic data sets of said region;
- based on said reference data set, determining variations that are caused in at least some of said additional data sets due to arrival of a second propagation phase of said contrast agent in the bloodstream;
- and
- based on the determined variations, identifying arrival of the second propagation phase of the contrast agent in the bloodstream.
An angiographic data acquisition system for acquiring angiographic data sets of a region of an examination subject in whose bloodstream a contrast agent has been introduced, comprising:
- an angiographic data acquisition unit that acquires an angiographic data set of a region of the examination subject to be examined during a first propagation phase of the contrast agent in the bloodstream, as a reference data set containing reference data;
- said angiographic data acquisition unit also acquiring additional angiographic data sets of said region;
- and
- a processor supplied with said reference data set and said additional data sets, that based on said reference data set, determines variations that are caused in at least some of said additional data sets due to arrival of a second propagation phase of said contrast agent in the bloodstream, and that, based on the determined variations, identifies arrival of the second propagation phase of the contrast agent in the bloodstream and emits and output indicating said arrival.
A computer-readable medium encoded with programming instructions for acquiring angiographic data sets of a region of an examination subject in whose bloodstream a contrast agent has been introduced, said medium being loadable into control unit of an angiography system and said programming instructions causing:
- a data acquisition unit of the angiography system to acquire an angiographic data set of a region of the examination subject to be examined during a first propagation phase of the contrast agent in the bloodstream, as a reference data set containing reference data, and to also acquire additional angiographic data sets of said region;
- and
- a processor to determine, based on said reference data set, variations that are caused in at least some of said additional data sets due to arrival of a second propagation phase of said contrast agent in the bloodstream and, based on the determined variations, to identify arrival of the second propagation phase of the contrast agent in the bloodstream.
Dependencies are inferred from the claim text.