The study of quantitative myocardial iron deposition in water phantoms at 3.0T in comparison with 1.5T MRI
10.3969/j.issn.1002-1671.2017.12.037
- VernacularTitle:3.0T和1.5TMRI定量心肌铁沉积的体外水模对比研究
- Author:
Peng PENG
1
;
Guangxin YANG
;
Ling ZHANG
;
Xiao FENG
;
Zhongkui HUANG
;
Liling LONG
Author Information
1. 广西医科大学第一附属医院放射科
- Keywords:
magnetic resonance imaging;
iron;
heart;
water phantom
- From:
Journal of Practical Radiology
2017;33(12):1951-1954
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility,reproducibility and reliability of the T 2* MRI technique in quantifying different concentrations of MnCl2water phantoms at 3.0T.Methods The water phantoms with different concentrations of MnCl2underwent T2* imaging at both 1.5T and 3.0T MRI,and repeated imaging at 3.0T MRI after 1 month.A Spearman correlation was used to determine the relationship of T2* values and Mn concentrations,and established the linear regression equations by using the simple linear regression.W ilcoxon signed-rank sum test and Bland-Altman method were used to evaluate the reproducibility of twice T 2* measurements at 3.0T,and the interclass correlation coefficient(ICC)was calculated.Results T2* values of the phantoms were negatively correlated to Mn concentrations(r= -1.000,P<0.001),and R2* values of the phantoms were positively correlated to Mn concentrations(r=1.000,P<0.001). T2* values of the phantoms measured at 3.0T were positively correlated to that measured at 1.5T(r=1.000,P<0.001).The linear regression equation was T2* 3.0T =0.651T2* 1.5T +0.041.There was no statistical difference of T2* values between the two measurements at 3.0T (Z= -1.732,P=0.083),and ICC was 1.000.Conclusion 3.0T MRI is feasible to quantify cardiac iron deposition.
