Liquid injector with appropriate operating conditions set by selecting displayed image
First Claim
1. A liquid injector for injecting at least a contrast medium into a subject whose fluoroscopic image is to be captured by an imaging diagnostic apparatus, said liquid injector, comprising:
- a liquid injection mechanism for injecting at least a contrast medium into a subject;
control means for controlling operation of said liquid injection mechanism under an operating condition;
said control means is configured;
(i) to read out a base-operation condition including data of a predetermined injection time for injection, a necessary dose of effective component of the contrast medium per unit weight of the subject, a concentration of the effective component, and an injection rate;
(ii) to calculate a necessary volume of the contrast medium based on the read out necessary dose of effective component per unit weight, weight of the subject, and concentration of the effective component;
(iii) to make an injection pattern based on the calculated necessary volume of the contrast medium and the base-operation condition, andwherein the injection rate of the base-operation condition is changed based on the calculated necessary volume of the contrast medium, and wherein the predetermined injection time is unchanged, for all volumes of the contrast medium, when making the injection pattern, whereby a timing of an optimum concentration of the contrast medium will be substantially unchanged for all volumes of the contrast medium by said liquid injection mechanism.
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Abstract
A contrast liquid injector has a controller that calculates a necessary volume of the contrast medium based on a read out necessary dose of effective component per unit weight, weight of the subject, and concentration of the effective component. The injection rate of a base-operation condition is changed based on the calculated necessary volume of the contrast medium, wherein the predetermined injection time is unchanged, for all volumes of the contrast medium, when making the injection pattern, whereby a timing of an optimum concentration of the contrast medium will be substantially unchanged for all volumes of the contrast medium.
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Citations
6 Claims
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1. A liquid injector for injecting at least a contrast medium into a subject whose fluoroscopic image is to be captured by an imaging diagnostic apparatus, said liquid injector, comprising:
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a liquid injection mechanism for injecting at least a contrast medium into a subject; control means for controlling operation of said liquid injection mechanism under an operating condition; said control means is configured; (i) to read out a base-operation condition including data of a predetermined injection time for injection, a necessary dose of effective component of the contrast medium per unit weight of the subject, a concentration of the effective component, and an injection rate; (ii) to calculate a necessary volume of the contrast medium based on the read out necessary dose of effective component per unit weight, weight of the subject, and concentration of the effective component; (iii) to make an injection pattern based on the calculated necessary volume of the contrast medium and the base-operation condition, and wherein the injection rate of the base-operation condition is changed based on the calculated necessary volume of the contrast medium, and wherein the predetermined injection time is unchanged, for all volumes of the contrast medium, when making the injection pattern, whereby a timing of an optimum concentration of the contrast medium will be substantially unchanged for all volumes of the contrast medium by said liquid injection mechanism. - View Dependent Claims (2, 3)
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4. A method of preparing an injection pattern, by using a computer, for injecting at least contrast medium into a subject, the method comprising steps of:
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(i) reading out a base-operation condition including data of a predetermined injection time for injection, a necessary dose of effective component of the contrast medium per unit weight of the subject, a concentration of the effective component, and an injection rate; (ii) calculating a necessary volume of the contrast medium based on the read out necessary dose of effective component per unit weight, weight of the subject, and concentration of the effective component; (iii) making an injection pattern based on the calculated necessary volume of the contrast medium and the base-operation condition, wherein the injection rate of the base-operation condition is changed based on the calculated necessary volume of the contrast medium, and wherein the predetermined injection time is unchanged, for all volumes of the contrast medium, whereby a timing of an optimum concentration of the contrast medium will be substantially unchanged for all volumes of the contrast medium, (iv) injecting the necessary volume of the contrast medium into a subject, according to the injection pattern. - View Dependent Claims (5, 6)
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Specification