Method of magnetic resonance arteriography using contrast agents
First Claim
1. A method of imaging a portion of an artery in a patient using magnetic resonance imaging, comprising,collecting a first image data set;
- administering a magnetic resonance contrast agent to the patient; and
collecting a second image data set including collecting image data which is representative of a substantial portion of a center of k-space while a concentration of the contrast agent in the artery is substantially higher than a concentration of contrast agent in adjacent veins and background tissue.
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Abstract
The present invention is a method and apparatus for providing preferential enhancement of an artery of interest relative to adjacent veins and background tissue. The method and apparatus adapts the timing of a maximum or substantially elevated rate of infusion to correlate with the collection of image data corresponding to the center of k-space. The technique and apparatus temporally correlates the timing of a maximum or substantially elevated rate of infusion and the mapping of k-space according to the location of the artery of interest, the size of the artery of interest, the physical condition of the patient, the time delay due to the configuration of the contrast agent delivery system, and/or the type of pulse sequence employed by the imaging apparatus. Adapting the timing of a maximum or substantially elevated rate of infusion to correlate with the collection of image data corresponding to the center of k-space provides a period of a maximum or substantially elevated contrast concentration in the artery of interest relative to adjacent veins during collection of at least a portion of the image data corresponding to the center of k-space.
78 Citations
44 Claims
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1. A method of imaging a portion of an artery in a patient using magnetic resonance imaging, comprising,
collecting a first image data set; -
administering a magnetic resonance contrast agent to the patient; and collecting a second image data set including collecting image data which is representative of a substantial portion of a center of k-space while a concentration of the contrast agent in the artery is substantially higher than a concentration of contrast agent in adjacent veins and background tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of imaging a portion of an artery in a patient using magnetic resonance imaging, the method comprising,
collecting a first image data set before administering a substantial amount of a magnetic resonance contrast agent; -
administering a magnetic resonance contrast agent to the patient; and collecting a second image data set including collecting image data which is representative of at least a portion of a center of k-space while a concentration of the contrast agent in the artery is about a maximum relative to a concentration of contrast agent in adjacent veins and background tissue. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of imaging a portion of an artery in a patient using magnetic resonance imaging, the portion of the artery being within a region of interest, the method comprising,
collecting a first image data set administering a magnetic resonance contrast agent to the patient; - and
collecting a second image data set including; collecting image data which is representative of at least a portion of a center of k-space while a concentration of the contrast agent in the artery is about a maximum relative to a concentration of contrast agent in adjacent veins and background tissue; and collecting image data which is representative of a substantial portion of the center of k-space while a concentration of the contrast agent in the artery is substantially higher than a concentration of the contrast agent in veins and background tissue adjacent to the artery. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of imaging an artery in a patient using magnetic resonance imaging, comprising,
collecting a first image data set; -
administering a magnetic resonance contrast agent to the patient; and collecting a second image data set using a body coil, the step of collecting the second image data set includes collecting image data which is representative of a substantial portion of a center of k-space while a concentration of the contrast agent in the artery is substantially higher than a concentration of the contrast agent in adjacent veins and background tissue. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification