Predictive factors of truncation artifacts in the arterial phase of Gd-EOB-DTPA-enhanced MRI: a nationwide multicenter study
Predictive factors of truncation artifacts in the arterial phase of Gd-EOB-DTPA-enhanced MRI: a nationwide multicenter study
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DOI：
10.1007/s11604-020-01052-x
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发表时间：
2020-10-06
影响因子：
2.1
通讯作者：
Murakami, Takamichi
中科院分区：
文献类型：
--
作者：
Tsurusaki, Masakatsu;Sofue, Keitaro;Murakami, Takamichi
目的在日本进行的一项多中心研究中，确定gd - eob - dtpa增强MRI动脉期截断伪影（TAs）的预测因素。材料与方法获取患者因素（年龄、性别、体重、是否存在病毒性肝炎等）和成像参数（触发、体素大小、矩阵、k空间排序、采集时间、还原因子、翻转角度、脂肪抑制、场强、注射速率、生理盐水体积）的数据。进行单因素和多因素分析，探讨这些参数的相关性。结果我们评估了来自43家机构的1444名患者，他们使用GE、西门子、飞利浦或东芝的MRI设备进行扫描（分别为501名、3554名、349名和240名）。TAs的总发生率为12.5%（分别为17.2%、3.6%、15.7%和12.1%）。Philips设备中使用的基质[比值比（OR） 0.13]、翻转角度（OR 5.77）、脂肪抑制（OR 0.106）和场强（OR 0.092）显著增加了MRI检查中TAs的发生率。结论动脉期TAs的发生受多种患者因素和影像学参数的影响。特别是西门子和东芝设备的TAs频率明显较低。这表明在动态序列中使用的这种特定于供应商的技术可能具有抗ta的作用。
Purpose To identify predictive factors for truncation artifacts (TAs) in the arterial phase of Gd-EOB-DTPA-enhanced MRI in a multicenter study in Japan. Materials and methods Data on patient factors (age, sex, weight, presence of viral hepatitis, and other conditions) and imaging parameters (e.g., triggering, voxel size, matrix, k-space ordering, acquisition time, reduction factor, flip angle, fat suppression, field strength, injection rate, and saline volume) were obtained. Univariate and multivariate analyses were performed to investigate the correlation of these parameters. Results We evaluated 1444 patients from 43 institutions who were scanned using GE, Siemens, Philips, or Toshiba MRI equipment (501, 354, 349, and 240 patients, respectively). The total incidence of TAs was 12.5% (17.2, 3.6, 15.7, and 12.1%, respectively). The matrix [odds ratio (OR) 0.13], flip angle (OR 5.77), use of fat suppression (OR 0.106), and field strength (OR 0.092) used in the Philips equipment significantly increased the incidence of TAs in MRI examination. Conclusions The incidence of TAs in the arterial phase is influenced by several patient factors and imaging parameters. Especially, Siemens and Toshiba equipment had a significantly lower frequency of TAs. This indicates that such vendor-specific technology used in the dynamic sequence may have a TA-resistant effect.