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• W4377097554 abstract "To investigate the feasibility and accuracy of quantifying liver iron concentration (LIC) in patients with thalassemia (TM) using 1.5T and 3T T2* MRI.1.5T MRI T2* values were measured in 391 TM patients from three medical centers: the T2* values of the test group were combined with the LIC (LICF) provided by FerriScan to construct the curve equation. In addition, the liver 3T MRI liver T2* data of 55 TM patients were measured as the 3T group: the curve equation of 3T T2* value and LICF was constructed.Based on the test group LICF (0.6-43 mg/g dw) and the corresponding 1.5T T2* value, the equation was LICF = 37.393T2*∧(-1.22) (R2 = 0.971; P < 0.001). There was no significant difference between LICe - 1.5T and LICF in each validation group (Z = -1.269, -0.977, -1.197; P = 0.204, 0.328, 0.231). There was significant consistency (Kendall's W = 0.991, 0.985, 0.980; all P < 0.001) and high correlation (rs = 0.983, 0.971, 0.960; all P < 0.001) between the two methods. There was no significant difference between the clinical grading results of LICe - 1.5T and LICF in each validation group (χ2 = 3.0, 4.0, 2.0; P = 0.083, 0.135, 0.157), and there was significant consistency between the clinical grading results (Kappa's K = 0.943, 0.891, 0.953; P < 0.001). There was no statistical correlation between the LICF (≥14 mg/g dw) and the 3T T2* value of severe iron overload (P = 0.085). The LICF (2-14 mg/g dw) in mild and moderate iron overload was significantly correlated with the corresponding T2* value (rs = -0.940; P < 0.001). The curve equation constructed from LICF and corresponding 3T T2* values in this range is LICF = 18.463T2*∧(-1.142) (R2 = 0.889; P < 0.001). There was no significant difference between LICF and LICe - 3T in the mild to moderate range (Z = -0.523; P = 0.601), and there was a significant correlation (rs = 0.940; P < 0.001) and significant consistency (Kendall's W = 0.970; P = 0.008) between them. LICe - 3T had high diagnostic efficiency in the diagnosis of severe, moderate, and mild liver iron overload (specificity = 1.000, 0.909; sensitivity = 0.972, 1.000).The liver iron concentration can be accurately quantified based on the 1.5T T2* value of the liver and the specific LIC-T2* curve equation. 3T T2* technology can accurately quantify mild-to-moderate LIC, but it is not recommended to use 3T T2* technology to quantify higher iron concentrations." @default.
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• W4377097554 date "2023-05-19" @default.
• W4377097554 modified "2023-09-30" @default.
• W4377097554 title "A multicenter study on the quantification of liver iron concentration in thalassemia patients by means of the MRI T2* technique" @default.
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• W4377097554 doi "https://doi.org/10.3389/fmed.2023.1180614" @default.
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