Optimization of a fluoroscope to reduce radiation exposure in pediatric imaging
Optimization of a fluoroscope to reduce radiation exposure in pediatric imaging
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DOI：
10.1007/s002470050728
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发表时间：
2000-04-01
影响因子：
2.3
通讯作者：
Johnson, LM
中科院分区：
文献类型：
--
作者：
Brown, PH;Thomas, RD;Johnson, LM
背景一家新的儿童医院提供了动力，以调查辐射剂量和图像质量的荧光镜，这是专门设计的儿科荧光透视。辐射防护管理建议尽可能低的辐射暴露，同时仍保持诊断图像质量。在儿科成像优化前后，从新安装的荧光镜获得辐射暴露和图像质量的比较体模成像数据。材料和方法。从不同厚度的体模中获取图像，模拟不同的患者尺寸。评价图像的高对比度和低对比度对象的可视化以及辐射暴露。由于使用图像增强器防散射格栅的效果也进行了调查。儿科手术用新型荧光镜的优化减少了约50%的辐射暴露（与最初安装的荧光镜相比），图像质量损失很小。脉冲透视能够将辐射剂量降低到连续透视的10%以下，同时仍保持可接受的体模图像质量。儿科荧光透视中的辐射暴露可以降低到远低于通常在未优化的荧光镜上发现的暴露设置的值。脉冲透视被认为是最佳儿科透视的必要条件。
Background. A new children's hospital provided the impetus to investigate radiation dose and image quality in a fluoroscope that was specially engineered for pediatric fluoroscopy. Radiation protection management recommends radiation exposures that are as low as reasonably achievable, while still maintaining diagnostic image quality.Objectives. To obtain comparative phantom imaging data on radiation exposure and image quality from a newly installed fluoroscope before and after optimization for pediatric imaging.Materials and methods. Images were acquired from various thickness phantoms, simulating differing patient sizes. The images were evaluated for visualization of high- and low-contrast objects and for radiation exposure. Effects due to use of the image intensifier anti-scatter grid were also investigated.Results. The optimization of the new fluoroscope for pediatric operation reduced radiation exposure by about 50% (compared to the originally installed fluoroscope), with very little loss of image quality. Pulsed fluoroscopy was able to lower radiation dose to less than 10% of continuous fluoroscopy, while still maintaining acceptable phantom image quality.Conclusion. Radiation exposure in pediatric fluoroscopy can be reduced to values well below the exposure settings that are typically found on unoptimized fluoroscopes. Pulsed fluoroscopy is considered a requisite for optimal pediatric fluoroscopy.