由正牙线引起的MRI易感元件
Yuri Iwamoto1, Hiroaki Shimamoto1, Doaa Felemban2
1Department of Oral and Maxillofacial Radiology, Osaka University Graduate School of Dentistry, Suita 565-0871, Japan.
Dento maxillo facial radiology
|June 13, 2024
概括
不钢正牙线在MRI上产生比或线更大的磁感应器件. 电线特性和MRI序列显著影响文物大小和范围.
科学领域:
- 生物材料科学 生物材料科学
- 医学成像物理 医学成像物理
- 矯正牙科 矯正牙科是一種矯正牙科.
背景情况:
- ортодонтика线可以导致磁共振成像 (MRI) 中的磁感应器件.
- 了解这些文物对于在带有正牙器械的患者中准确的MRI解释至关重要.
研究的目的:
- 在MRI上评估由各种正牙线产生的磁感应器件.
- 为了确定线材特性和MRI序列对文物大小的影响.
主要方法:
- 弧形正线 (不钢,,) 在聚幻影中使用1.5TMRI扫描仪进行扫描.
- 标准的T1加权旋回回声 (SE) 和梯度回声 (GRE) 序列以及其他八个序列被采用.
- 使用ASTM F2119-07标准和OsiriX软件量化了这些文物.
主要成果:
- 不钢 (SS) 导线产生的黑白工件明显大于 (CC) 和 (Ti) 导线与SE/GRE序列 (P < .01).
- 渐变回声 (GRE) 序列显示,使用SS线的黑色文物体积最高.
- 此外,SS电线还显示了显著更长的头骨-尾尾骨文物范围 (P < .01).
结论:
- 铁磁/偏磁正牙线通过改变磁场均性来诱导人工物.
- 不钢线产生了最实质性的文物,其次是和线.
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