Modeling of Pharmaceutical Propagation
First Claim
1. A method of controlling an injector system for delivering a contrast enhancing fluid to a patient, comprising:
- determining at least one patient transfer function for the patient based upon data specific to the patient, the at least one patient transfer function providing a time enhancement output for a given input;
determining a desired time enhancement output;
using the at least one patient transfer function to determine an injection procedure input; and
controlling the injector system at least in part on the basis of the determined injection procedure input.
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Accused Products
Abstract
A method of modeling propagation of a pharmaceutical fluid in a patient, includes: collecting data corresponding to a time response curve resulting from injection of the fluid; and determining at least one mathematical model describing the data. The mathematical model can, for example, be a model which is not determined by a continuous or a discrete-time Fourier transform of the data. A method of controlling injection of a pharmaceutical fluid into a patient using an injector in a medical procedure, includes: collecting data corresponding to a patient response curve resulting from injection of the fluid; determining at least one mathematical model describing the data; and controlling the injector during the medical procedure to control injection of the fluid into the patient to create patient response at least in part on the basis of the mathematical model. A method of controlling injection of a contrast medium into a patient using an injector in a medical imaging procedure using an imaging scanner, includes: determining at least one mathematical model to predict a time enhancement response resulting from injection of the contrast medium; determining an injection protocol to approximate a predetermined time enhancement response in the patient by determining a constrained input solution to the mathematical model; and using the injection protocol to control the injector during the medical imaging procedure to control injection of the contrast medium into the patient to create an image of a region of interest.
153 Citations
106 Claims
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1. A method of controlling an injector system for delivering a contrast enhancing fluid to a patient, comprising:
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determining at least one patient transfer function for the patient based upon data specific to the patient, the at least one patient transfer function providing a time enhancement output for a given input;
determining a desired time enhancement output;
using the at least one patient transfer function to determine an injection procedure input; and
controlling the injector system at least in part on the basis of the determined injection procedure input. - 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, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A method of determining at least one patient physiological parameter from an imaging procedure, comprising the following steps:
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measuring time enhancement outputs for at least two different regions of interest; and
determining at least one difference between the time enhancement outputs to provide a measure of the at least one patient physiological parameter. - View Dependent Claims (41, 42, 43, 44)
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45. An injector system for the delivery of a fluid to a patients comprising:
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an injector; and
a controller in communicative connection with the injector, the controller comprising;
at least one patient transfer function determined for the patient based upon data specific to the patient, the at least one patient transfer function providing a time enhancement output for a given input; and
a processor to determine an injection procedure input for a desired time enhancement output using the at least one patient transfer function. - View Dependent Claims (46, 47, 48, 49, 50, 51)
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52-86. -86. (canceled)
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87. A method of controlling an injector in a medical imaging procedure using an imaging scanner, comprising:
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determining at least one mathematical model to predict a time enhancement response resulting from injection of a contrast medium;
determining an injection protocol to approximate a predetermined time enhancement response in the patient by determining a constrained input solution to the mathematical model; and
using the injection protocol to control the injector during the medical imaging procedure to control injection of the contrast medium into the patient to create an image of a region of interest. - View Dependent Claims (88, 89, 90, 91, 92, 93, 94, 95, 96)
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97-98. -98. (canceled)
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99. A method of controlling injection of a pharmaceutical fluid into a patient using an injector having a controller in communicative connection with a computer memory in a medical procedure, comprising:
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collecting data corresponding to a patient response curve resulting from injection of the fluid;
choosing at least one mathematical model from a plurality of mathematical models stored in the computer memory to describe the data;
adapting the model to the collected data; and
controlling the injector via the controller during the medical procedure to control injection of the fluid into the patient to create patient response at least in part on the basis of the mathematical model.
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100. A system for creating an image of a region of interest of a patient comprising:
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an imaging device for measuring a property of the patient over a region of interest;
an injector for injecting a pharmaceutical into the patient;
at least one standard region that is also measured by the imaging device; and
a computation algorithm that corrects measurements of the property over the patient'"'"'s region of interest based upon the measurements in the standard region. - View Dependent Claims (101, 102)
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103. A method of creating an image of a region of interest in a patient comprising:
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measuring a property of the patient over the region of interest using an imaging device;
measuring at least one standard region with the imaging device; and
correcting measurements of the property over the patient'"'"'s region of interest based upon the measurements in the standard region. - View Dependent Claims (104, 105)
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106. An imaging system, comprising:
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an imager to create an image of a region of interest of a patient;
an injector adapted to inject a contrast medium; and
a controller in operative communication with the injector to control the injector, the controller comprising. at least one patient transfer function determined for the patient based upon data specific to the patient, the at least one patient transfer function providing a time enhancement output for a given input; and
a processor to determine an injection procedure input for a desired time enhancement output using the at least one patient transfer function.
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Specification