Method of predicting contrast agent flowage in organism

A technology of contrast agents and living organisms, applied in diagnostic recording/measurement, instruments for radiological diagnosis, medical science, etc., which can solve the problem of low image resolution

Inactive Publication Date: 2006-08-23
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The resolution of the images examined by this test is also very low

Method used

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  • Method of predicting contrast agent flowage in organism
  • Method of predicting contrast agent flowage in organism
  • Method of predicting contrast agent flowage in organism

Examples

Experimental program
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Embodiment Construction

[0152] figure 1 A computed tomography system 1 preferably employing the method according to the invention is shown, which is used in different forms. In the example shown, the computed tomography system 1 has an x-ray tube 2 and a detector 3 arranged opposite it, which are rotatably mounted on a support. During the rotation of the x-ray tube 2 and the detector 3, the patient 7 moves past the x-ray tube 2 and the detector 3 on the patient couch 6 along the system axis 4 so that a helical scan is performed relative to the patient. The x-ray tube 2 and the detector 3 are located together with the holder in a housing 5 which is connected to the computing unit 9 via data and control lines 10 . For the injection of the contrast medium, the computer unit 9 controls the injector 11 via the control line 8 , which injects the contrast medium into the patient at the desired flow rate and at the desired time via the venous access 12 .

[0153] If a so-called test bolus is injected, the ...

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Abstract

A method is disclosed for forecasting the contrast medium flow in a living body, in particular in a patient, in which a defined test bolus with a contrast medium is injected, preferably intravenously and with a known injection flow profile, into the body, preferably into a blood vessel. The time concentration profile of the contrast medium is observed and determined over a limited time period with a number of measuring instants at at least one location in the body with the aid of a tomographic method. The time profile of the contrast medium concentration of another contrast medium dose is forecast with the aid of a linear cause / effect formulation from the measured data obtained via the distribution of the contrast medium. The following calculation formula is then used for forecasting the time concentration profile cR(t) of the contrast medium at at least one of the previously measured locations of the body.

Description

technical field [0001] The invention relates to a method for predicting the flow of a contrast agent in a living body, especially in a patient, wherein a defined test bolus containing a contrast agent with a known injection flow profile is injected into the body, preferably into a blood vessel, especially a vein, Observation and determination of the temporal concentration course of a contrast agent at at least one location in the body using tomographic methods during a finite time period Z comprising a plurality of measurement instants and using a linear cause / effect basis from the obtained measured data on the distribution of the contrast agent Predict the time course of contrast agent concentration for another contrast agent injection. Background technique [0002] For tomographic methods, especially in the field of computed tomography or NMR tomography, due to the low contrast that occurs in the visualization of specific body regions, a contrast agent is preferably applie...

Claims

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Application Information

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IPC IPC(8): A61B6/03A61B5/00
CPCA61B6/481A61B6/504
Inventor 厄恩斯特·克洛茨安娜贝拉·劳舍尔
Owner SIEMENS AG
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