可编程心室-腹突变门的安全性和功能:一个体外7特斯拉磁共振成像研究
Bixia Chen1,2, Philipp Dammann1,2, Ramazan Jabbarli2
1Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, North Rhine Westphalia, Germany.
PloS one
|October 11, 2023
概括
在7TMRI系统中测试了两个可编程的心室-腹膜 (VP) 冲门的安全性. 两都被发现是MR不安全的,这表明需要改进门设计以适应条件的7TMRI使用.
科学领域:
- 医疗器械 医疗器械
- 磁共振成像技术 磁共振成像技术
- 神经外科 神经外科
背景情况:
- 超高场 (7T) MRI神经成像正在扩大.
- 可编程的心室-腹腔 (VP) 排流经常被植入.
- 在7TMRI中评估植入装置的安全性至关重要.
研究的目的:
- 在7TMRI系统中评估两种常见的可编程VP道门的功能和安全性.
- 为了在7TMRI中识别与这些设备相关的潜在图像工件.
- 在7T时确定proGAV 2.0和CODMAN CERTAS® Plus门的MR安全性.
主要方法:
- 测试了三种proGAV 2.0和三种CODMAN CERTAS® Plus可编程VP变送.
- 在静态磁场梯度下进行了偏斜角度测试.
- 通过使用球形幻影和7TMRI扫描 (MPRAGE,GRE,SE序列) 来评估各种位置的压力设置,可重编程性和MRI器件.
主要成果:
- 两种门类型均表现出显著的偏斜角度,表明MR由于7T的铁磁吸引力造成的不安全条件.
- 在大多数位置上,proGAV门保持了编程压力和可重编程性,但在倾斜时失去可重编程性.
- 科德曼门改变了压力设置,并在所有测试位置失去可重编程性. 门附近的文物限制了图像的评估能力.
结论:
- 经过测试的可编程VP分流 (proGAV 2.0和CODMAN CERTAS® Plus) 在7TMRI系统中使用是不安全的.
- 开发用于7T系统的MR条件可编程VP道门需要新的设计,可能使用无磁铁机制或高度强制性的永久磁铁.
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