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DCE-MRI Quantitative Technique Subject
The reproducibility study of the pharmacokinetic model extended tofts linear of the dynamic contrast-enhanced MRI in brain glioma
JIA Long-wei  NIU Lei  MA Wen-shuai  LIU Xue-jun  FENG Wei-hua  SUI Qing-lan 

DOI:10.3969/j.issn.1674-8034.2015.08.003.


[Abstract] Objective: Through repeatedly measuring the dynamic contrast-enhanced MRI (DCE-MRI) pharmacokinetic parameters-volume transfer constant, Ktrans; extracellular extravascular volume fraction, Ve; and blood plasma fraction, Vp of the glioma to determine whether the pharmacokinetic model of Extended Tofts Linear could operate reproduceably.Materials and Methods: Nineteen cases of gliomas (seven with low-grade, twelve with high-grade) were enrolled. All of the patients underwent DCE-MRI before operation. The pharmacokinetic model of Extended Tofts Linear was used to calculate the datas, the tissue enhancement-time curve and pharmacokinetic parameters (Ktrans, Ve and Vp) of the lesion, solid components were obtained. Ktrans value, Ve value and Vp value were compared to judge whether there were significant differences between the low-grade glioma and the high-grade glioma of the two groups (survey one and survey two), and whether the pharmacokinetic model of Extended Tofts Linear could operate reproduceably.Results: The values of Ktrans, Ve and Vp in high-grade glioma were significantly higher than the low grade glioma in both groups (survey one and survey two), (P<0.05); The intraclass correlation coefficient (ICC) values of Ktrans, Ve and Vp were 0.93, 0.809, 0.592, separately> 0.4.Conclusion: The reproducibility of the DCE-MRI Extended Tofts Linear is good.
[Keywords] Hemodynamics;Magnetic resonance imaging;Dynamic enhancement;Brain;Glioma

JIA Long-wei Department of Radiology, The Afflilated Hospital of Qingdao University, Qingdao 266000, China

NIU Lei Department of Radiology, The Afflilated Hospital of Qingdao University, Qingdao 266000, China

MA Wen-shuai Department of Radiology, The Afflilated Hospital of Qingdao University, Qingdao 266000, China

LIU Xue-jun Department of Radiology, The Afflilated Hospital of Qingdao University, Qingdao 266000, China

FENG Wei-hua Department of Radiology, The Afflilated Hospital of Qingdao University, Qingdao 266000, China

SUI Qing-lan* Department of Radiology, The Afflilated Hospital of Qingdao University, Qingdao 266000, China

*Corresponding author: Sui QL, E-mail: suiql@163.com

Conflicts of interest   None.

Received  2015-06-01
Accepted  2015-07-08
DOI: 10.3969/j.issn.1674-8034.2015.08.003
DOI:10.3969/j.issn.1674-8034.2015.08.003.

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