alexa One Computation Method of the Constant K3/K4 in Three-Compartment Modeling of 13N-NH3 PET Images Tractor
ISSN: 2471-2663

Clinical & Medical Biochemistry
Open Access

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Research Article

One Computation Method of the Constant K3/K4 in Three-Compartment Modeling of 13N-NH3 PET Images Tractor

Zhenyou Wang*, Xueling Huang and Changxiu Song

Faculty of Applied Mathematics, Guangdong University of Technology, Guangzhou, PR China

*Corresponding Author:
Zhenyou Wang
Faculty of Applied Mathematics Guangdong
University of Technology Guangzhou, 510520, PR China
E-mail: [email protected]

Received date:December 09, 2015; Accepted date: January 05, 2016; Published date: January 12, 2016

Citation: Wang Z, Huang X, Song C (2016) One Computation Method of the Constant K3/K4 in Three-Compartment Modeling of 13N-NH3 PET Images Tractor. Clin Med Biochemistry Open Access 2:110. doi: 10.4172/2471-2663.1000110

Copyright: © 2016 Wang Z, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



This study aims to quantitatively analyze and compute the velocity constant of three-compartment modeling, which is based on 13NNH 3 PET images of human brain tumors. We selected the parietal lobe, cerebellum, frontal lobe, and the average of these three reference regions to analyze the transfer constant ratio, K3/K4, in three-compartment modeling. The study was based on the results of threecompartment modeling. Data sampling was performed for a left frontal lobe tumor, and simultaneously, data sampling was performed for three reference regions (including the parietal lobe, cerebellum, and right frontal lobe). The dynamic frames were 4 × 10 s, 7 × 20 s, 4 × 60 s, and 1 × 480 s. The parietal lobe, cerebellum, frontal lobe and the average of the three reference regions, as determined by the slopes of the fitted curves, are 1.6207, 1.5931, 1.5293, and 1.5803, respectively. The F-test values are 5552.4, 2943.6, 3756.8, and 5650.2, respectively; the average F-test value is the largest. And we have experiment with 11 ROIs with REF in this way, they are the line relative. All the R2 and P for all the fitted curves are almost 1, and all the P of all the fitted curves are almost 0. Moreover, the 95% confidence interval, which is based on the variance test, are enough short respectively. The comparison results show that the deviation and relative deviation for mean of REF are within the acceptable level. Thus, we have thought the K3/K4 as 0.5803; therefore, the transfer constant K4 is about 1.72 times that of K3 for the clinical use of 13N-NH3 PET tracer for brain tumors. The 13N-NH3 PET tracer is feasible for clinical use with brain tumors. The transfer constant, K4, is approximately two times of K3 in the three-compartment modeling of the parietal lobe, cerebellum, frontal lobe and the average of the three reference regions. This method is feasible and effective.


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