Technological Educational Institute of Athens, Radiology Department, Athens, Greece.
Department of Medical Physics, University Hospital of Larissa, Medical, School of Thessaly, Biopolis, Greece.
Clin Imaging. 2014 Mar-Apr;38(2):85-90. doi: 10.1016/j.clinimag.2013.10.004. Epub 2013 Nov 7.
The purpose of this retrospective clinical study was to identify and evaluate the presence and frequency of T2 FLAIR artifacts on brain MRI studies performed at 3 T. We reviewed axial T2 FLAIR images in 200 consecutive unremarkable brain MRI studies performed at 3 T. All studies were reviewed for the presence of artifacts caused by pulsatile CSF flow, magnetic susceptibility and no nulling of the CSF signal. T2 FLAIR images introduce several artifacts that may degrade image quality and mimic pathology. Knowledge of these artifacts and increased severity and frequency at 3 T is of particular importance in avoiding a misdiagnosis.
本回顾性临床研究的目的是识别和评估在 3T 上进行的脑部 MRI 研究中 T2 FLAIR 伪影的存在和频率。我们回顾了在 3T 上进行的 200 例无明显异常的脑部 MRI 研究的轴向 T2 FLAIR 图像。所有研究均对由脉动 CSF 流、磁化率和 CSF 信号未消除引起的伪影的存在进行了评估。T2 FLAIR 图像会引入一些可能降低图像质量并模拟病变的伪影。了解这些伪影以及在 3T 下的严重程度和频率增加对于避免误诊尤为重要。
