Blood flow dynamic analysis apparatus and method, and magnetic resonance imaging system
First Claim
1. A blood flow dynamic analysis apparatus configured to acquire data from a plurality of regions lying in slices set to a subject with a contrast agent injected therein and to analyze blood flow dynamics of the subject based on the data, said blood flow dynamic analysis apparatus comprising:
- a contrast agent concentration profile generation device configured to generate a profile indicative of a temporal change in a concentration of the contrast agent for each of the regions;
a characteristic amount calculation device configured to calculate the concentration of the contrast agent in each region as contrast agent passes through the region based on a respective profile;
a graphical representation generation device configured to generate a graphical representation containing a cluster of dots representing the concentration of the contrast agent in each region as the contrast agent passes through the region;
a region determination device configured to determine a region of the plurality of regions in which a vein exists based on the graphical representation; and
a function calculation device configured to calculate a venous output function, based on the temporal change in the concentration of the contrast agent in the region in which the vein exists.
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Accused Products
Abstract
A blood flow dynamic analysis apparatus acquires data from a plurality of regions lying in slices set to a subject with a contrast agent injected therein and analyzes blood flow dynamics of the subject, based on the data. The apparatus includes a contrast agent concentration profile generation device for generating profiles each indicative of a temporal change in the concentration of the contrast agent for every said region lying in the slices, a characteristic amount calculation device for calculating the concentrations of the contrast agent in the regions after a bolus of contrast agent has passed through the regions, from the profiles, a histogram generation device for generating a histogram containing the concentrations of the contrast agent in the regions after the bolus of contrast agent has passed through the regions, a region determination device for determining a region in which each vein exists, from the regions, based on the histogram, and a function calculation device for calculating a venous output function, based on a temporal change in the concentration of the contrast agent in the region in which the vein exists.
13 Citations
20 Claims
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1. A blood flow dynamic analysis apparatus configured to acquire data from a plurality of regions lying in slices set to a subject with a contrast agent injected therein and to analyze blood flow dynamics of the subject based on the data, said blood flow dynamic analysis apparatus comprising:
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a contrast agent concentration profile generation device configured to generate a profile indicative of a temporal change in a concentration of the contrast agent for each of the regions; a characteristic amount calculation device configured to calculate the concentration of the contrast agent in each region as contrast agent passes through the region based on a respective profile; a graphical representation generation device configured to generate a graphical representation containing a cluster of dots representing the concentration of the contrast agent in each region as the contrast agent passes through the region; a region determination device configured to determine a region of the plurality of regions in which a vein exists based on the graphical representation; and a function calculation device configured to calculate a venous output function, based on the temporal change in the concentration of the contrast agent in the region in which the vein exists. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A magnetic resonance imaging system comprising:
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a contrast injection device configured to inject a contrast agent into a subject; and a blood flow dynamic analysis apparatus configured to acquire data from a plurality of regions lying in slices set to the subject with a contrast agent injected therein and to analyze blood flow dynamics of the subject based on the data, wherein said blood flow dynamic analysis apparatus comprises; a contrast agent concentration profile generation device configured to generate a profile indicative of a temporal change in a concentration of the contrast agent for each of the regions; a characteristic amount calculation device configured to calculate the concentration of the contrast agent in each region as a contrast agent passes through the region based on a respective profile; a graphical representation generation device configured to generate a graphical representation containing a cluster of dots representing the concentration of the contrast agent in each region as the contrast agent passes through the region; a region determination device configured to determine a region of the plurality of regions in which a vein exists based on the graphical representation; and a function calculation device configured to calculate a venous output function, based on the temporal change in the concentration of the contrast agent in the region in which the vein exists. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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12. A method of a blood flow dynamic analysis for acquiring data from a plurality of regions lying in slices set to a subject with a contrast agent injected therein and analyzing blood flow dynamics of the subject, based on the data, said method comprising:
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generating, by a profile generation device, profiles each indicative of a temporal change in the concentration of contrast agent for every region lying in the slices; calculating a concentration of the contrast agent in each of the regions as a contrast agent passes through the regions, from the profiles; generating, by a graphical representation generation device, a graphical representation containing a cluster of dots that represent a relationship of three characteristic amounts of the concentration of the contrast agent in the regions as the contrast agent passes through the regions; determining, by a region extraction unit, a region in which a vein exists, from the regions, based on the graphical representation; and calculating, by the region extraction unit, a venous output function, based on a temporal change in the concentration of the contrast agent in the region in which the vein exists.
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Specification