In this study, we assessed how image quality depends on the angle of tilt of a flex tilt coil supporting device during an MRI examination. All measurements were performed with an American College of Radiology (ACR) MRI phantom using a flex tilt coil supporting device. All images were analyzed using an automatic assessment method following the ACR MRI accreditation guidance. Image quality was compared between acquisitions grouped according to the angle of tilt of the coil supporting device: group A (Flat mode), group B (10˚), and group C (18˚). All measured image qualities were within the ACR recommended criteria, regardless of the angle of tilt of the flex tilt coil supporting device. However, statistically significant differences between the three groups were found for slice thickness, position accuracy, image intensity uniformity, and SNR (P < 0.05, ANOVA). The flex tilt coil supporting device can provide sufficient image quality, passing the criteria of the ACR MRI guideline, despite differences in slice thickness, slice position accuracy, image intensity uniformity, and SNR according to the angle of tilt.

中文翻译：

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根据柔性倾斜线圈支撑设备的倾斜角度进行图像质量评估：ACR幻象研究

在这项研究中，我们评估了在MRI检查期间图像质量如何取决于柔性倾斜线圈支撑装置的倾斜角度。所有测量均使用挠性倾斜线圈支撑装置在美国放射学院（ACR）MRI体模上进行。遵循ACR MRI认证指南，使用自动评估方法分析所有图像。在根据线圈支撑设备的倾斜角度分组的采集之间比较了图像质量：A组（平面模式），B组（10°）和C组（18°）。不管柔性倾斜线圈支撑装置的倾斜角度如何，所有测量的图像质量均在ACR建议的标准之内。但是，在切片厚度，位置精度，图像强度均匀性和SNR（P  <0.05，方差分析）。尽管根据倾斜角度的不同，切片厚度，切片位置精度，图像强度均匀性和SNR有所不同，但柔性倾斜线圈支撑装置仍可以提供足够的图像质量，并通过ACR MRI准则。