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Constant determination method and xenon CT apparatus in relation to the end-tidal rate constant and arterial blood rate constant
Constant determination method and xenon CT apparatus in relation to the end-tidal rate constant and arterial blood rate constant
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机译：关于潮气末常数和动脉血流常数的常数确定方法和氙CT设备
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摘要
PROBLEM TO BE SOLVED: To precisely obtain a brain blood stream. SOLUTION: A K-S arithmetic means 124 obtains the temporarily calculated value λα of a brain/blood distribution coefficient λ from temporarily calculated values Kaiαand Kaoα obtained by a Ke/Ka conversion means 112 on the basis of the assumed value γα of a Ke/Ka conversion constant γ set by an assumed value setting means 114. In this case, the means 114 varies the value γα in a desired range. A λ value defining means 126 compares the value λαwith a target value λτ supplied from a target λvalue calculation means 122 to define the value γα when the value λα approaches the closest to the value λτas a true Ke/Ka conversion constant γ.
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机译：要解决的问题：精确获取脑血流。解决方案：K-S算术装置124获得临时计算的值λ。脑/血液分配系数λ从临时计算的值Kaiα和Kaoα中得出。由Ke / Ka转换装置112基于假定值γ获得的值。 Ke / Ka转换常数＆在这种情况下，装置114改变值γ。在所需范围内。 λ值定义装置126将值λ与目标值λ相比较。从目标λ值计算装置122提供的值来定义值γ。当值＆lambda;＆alpha;作为真正的Ke / Ka转换常数γ接近最接近值λ的值。
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