Tribuna Liliana, Oliveira Pedro Belo, Iruela Alba, Marques João, Santos Paulo, Teixeira Tiago
Department of Radiology, Hospital da Luz Aveiro, 3800-009 Aveiro, Portugal.
Department of Radiology, Centro Hospitalar Universitário de Coimbra, 3004-561 Coimbra, Portugal.
Diagnostics (Basel). 2021 Dec 11;11(12):2334. doi: 10.3390/diagnostics11122334.
This study aimed at establishing native T1 reference values for a Canon Vantage Galan 3T system and comparing them with previously published values from different vendors. A total of 20 healthy volunteers (55% Women; 33.9 ± 11.1 years) underwent left ventricular T1 mapping at 3T MR. A MOLLI 5(3)3 sequence was used, acquiring three short-axis slices. Native T1 values are shown as means (±standard deviation) and Student's independent samples -test was used to test gender differences in T1 values. Pearson's correlation coefficient analysis was used to compare two processes of T1 analysis. The results show a global native T1 mean value of 1124.9 ± 55.2 ms (exponential analysis), that of women being statistically higher than men (1163 ± 30.5 vs. 1077.9 ± 39.5 ms, respectively; < 0.001). There were no specific tendencies for T1 times in different ventricular slices. We found a strong correlation (0.977, < 0.001) with T1 times derived from parametric maps (1136.4 ± 60.2 ms). Native T1 reference values for a Canon 3T scanner were provided, and they are on par with those already reported from other vendors for a similar sequence. We also found a correlation between native T1 and gender, with higher values for women.
本研究旨在建立佳能Vantage Galan 3T系统的固有T1参考值，并将其与先前不同供应商发表的值进行比较。共有20名健康志愿者（55%为女性；年龄33.9±11.1岁）在3T磁共振成像下进行左心室T1成像。使用MOLLI 5(3)3序列，采集三个短轴切片。固有T1值以均值（±标准差）表示，并采用学生独立样本t检验来检验T1值的性别差异。使用Pearson相关系数分析来比较T1分析的两个过程。结果显示，固有T1的全局平均值为1124.9±55.2毫秒（指数分析），女性的值在统计学上高于男性（分别为1163±30.5和1077.9±39.5毫秒；P<0.001）。不同心室切片的T1时间没有特定趋势。我们发现与参数图得出的T1时间有很强的相关性（0.977，P<0.001）（1136.4±60.2毫秒）。提供了佳能3T扫描仪的固有T1参考值，它们与其他供应商针对类似序列报告的值相当。我们还发现固有T1与性别之间存在相关性，女性的值更高。
