Method and system for determining a measurement start time
First Claim
1. A method for determining a measurement start time for an imaging measurement via a medical imaging system, the method comprising:
- respectively detecting concentration values of a current concentration of a contrast medium in a monitored region of an examination subject at successive detection times;
determining a current examination-specific enhancement model curve based on a behavior of the concentration values with respect to time and a plurality of candidate enhancement model curves, the plurality of candidate enhancement model curves being calculated based on a population-averaged enhancement model curve; and
determining the measurement start time based on the current examination-specific enhancement model curve,wherein the determining a current examination-specific enhancement model curve includes,fitting the concentration values with respect to time to each of the plurality of candidate enhancement model curves, andselecting the current examination-specific enhancement model curve from among the plurality of candidate enhancement model curves based on the fitting.
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Abstract
A method is disclosed for determining a measurement start time for an imaging measurement via a medical imaging system depending on a course of concentration values of a contrast medium in a monitored region of an examination object over time. The method includes detecting the concentration values of the current concentration of the contrast medium in the monitored region at different successive detection times; determining a current examination-specific accumulation model curve on the basis of a course of the concentration values over time; and determining the measurement start time on the basis of the examination-specific accumulation model curve. A method for controlling a medical imaging system, a control device and a medical imaging system for implementing the method are further disclosed.
27 Citations
27 Claims
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1. A method for determining a measurement start time for an imaging measurement via a medical imaging system, the method comprising:
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respectively detecting concentration values of a current concentration of a contrast medium in a monitored region of an examination subject at successive detection times; determining a current examination-specific enhancement model curve based on a behavior of the concentration values with respect to time and a plurality of candidate enhancement model curves, the plurality of candidate enhancement model curves being calculated based on a population-averaged enhancement model curve; and determining the measurement start time based on the current examination-specific enhancement model curve, wherein the determining a current examination-specific enhancement model curve includes, fitting the concentration values with respect to time to each of the plurality of candidate enhancement model curves, and selecting the current examination-specific enhancement model curve from among the plurality of candidate enhancement model curves based on the fitting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for performing an imaging measurement via a medical imaging system, the method comprising:
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respectively detecting concentration values of a current concentration of a contrast medium in a monitored region of an examination subject at successive detection times; determining a current examination-specific enhancement model curve based on a behavior of the concentration values with respect to time and a plurality of candidate enhancement model curves, the plurality of candidate enhancement model curves being calculated based on a population-averaged enhancement model curve; determining a measurement start time for the imaging measurement based on the current examination-specific enhancement model curve; and performing the imaging measurement at the measurement start time after the determining the measurement start time, wherein the determining a current examination-specific enhancement model curve includes fitting the plurality of candidate enhancement model curves to the behavior of the concentration values with respect to time. - View Dependent Claims (25)
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26. A control device for a medical imaging system, the control device comprising:
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an interface configured to acquire or output a contrast medium administration start time; and a measurement start time determination unit including an input interface configured to respectively acquire concentration values of a current concentration of a contrast medium in a monitored region of an examination subject at successive detection times, an enhancement model curve determination unit configured to determine a current examination-specific enhancement model curve based on a behavior of the concentration values with respect to time and a plurality of candidate enhancement model curves, the plurality of candidate enhancement model curves being calculated based on a population-averaged enhancement model curve, and a model curve analysis unit configured to determine the measurement start time based on the current examination-specific enhancement model curve, wherein the enhancement model curve determination unit is configured to determine the current examination-specific enhancement model curve by, fitting the concentration values with respect to time to each of the plurality of candidate enhancement model curves, and selecting the current examination-specific enhancement model curve from among the plurality of candidate enhancement model curves based on the fitting. - View Dependent Claims (27)
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Specification