Method for producing a computed tomography display of tissue structures by applying a contrast medium
First Claim
1. A method of determining a distribution of a contrast medium in a tissue structure, an X-ray scan being performed during the presence of the contrast medium, comprising:
- measuring absorption data for at least two different energy spectra;
reconstructing a computed tomography intermediate image per energy spectrum;
determining the distribution of the contrast medium in the tissue structure from different energy-specific absorption behavior between the tissue structure and the contrast medium, anda calculating significancy statement referring to the distribution of the contrast medium from the at least two intermediate images,by forming the quotient of the intermediate images.
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Abstract
A method is disclosed for producing a computed tomography display of tissue structures by applying a contrast medium. A contrast medium is applied to a patient for better visualization of the tissue structure to be examined. An X-ray scan is performed during the presence of the one contrast medium, and computed tomography 2- or 3-dimensional pictures are subsequently reconstructed from the X-ray scan data obtained. In the method, absorption data are measured for at least two different energy spectra, a computed tomography intermediate image is reconstructed per energy spectrum, and the distribution of the one contrast medium in the tissue is determined from the different energy-specific absorption behavior between tissue and contrast medium.
20 Citations
11 Claims
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1. A method of determining a distribution of a contrast medium in a tissue structure, an X-ray scan being performed during the presence of the contrast medium, comprising:
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measuring absorption data for at least two different energy spectra; reconstructing a computed tomography intermediate image per energy spectrum; determining the distribution of the contrast medium in the tissue structure from different energy-specific absorption behavior between the tissue structure and the contrast medium, and a calculating significancy statement referring to the distribution of the contrast medium from the at least two intermediate images, by forming the quotient of the intermediate images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for producing a computer tomography display of a tissue structure by applying a contrast medium, the method comprising:
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applying the contrast medium to a patient for better visualization of the tissue structure to be examined; performing an X-ray scan during the presence of the contrast medium; measuring absorption data for at least two different energy spectra; reconstructing a computed tomography intermediate image per energy spectrum; determining the distribution of the contrast medium in the tissue structure from different energy-specific absorption behavior between the tissue structure and the contrast medium; reconstructing at least one of computed tomography two-dimensional and-three dimensional pictures, and a calculating significancy statement referring to the distribution of the contrast medium from the at least two intermediate images by forming the quotient of the intermediate images.
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Specification