Saito Hitoshi, Ito Teruhiro, Omachi Koichi, Inugami Atsushi, Yamaguchi Masaru, Tsushima Megumi, Mariya Yasushi, Kashiwakura Ikuo
Department of Radiology, Akita Kousei Medical Center, 1-1-1 Iijima Nishibukuro, Akita, 011-0948, Japan.
Department of Radiological Life Sciences, Hirosaki University Graduate School of Health Science, 66-1 Hon-cho, Hirosaki, Aomori, 036-8564, Japan.
Radiol Phys Technol. 2020 Mar;13(1):104-110. doi: 10.1007/s12194-020-00553-8. Epub 2020 Jan 29.
The present study aimed to evaluate whether the use of a smoothing filter would improve the image quality in pediatric Tc-dimercaptosuccinic acid (Tc-DMSA) scintigraphy. We retrospectively reviewed 31 kidneys in 16 consecutive pediatric patients aged 10 months to 14 years. The administered dose was calculated using a weight-based method. Two reviewers randomly evaluated the original planar posterior images and smoothing filter image; they assessed image quality and performed defect evaluations. The evaluation of visual image quality yielded significantly better results for the smoothing filter images than for the original images. Although the smoothing filter images were slightly inferior to the original images in terms of edge sharpness, no significant difference was observed in the defect evaluation. We confirmed that Tc-DMSA scintigraphy with a smoothing filter yielded reduced image noise, while maintaining defect evaluation performance and improving image quality.
本研究旨在评估使用平滑滤波器是否会改善小儿锝-二巯基丁二酸（Tc-DMSA）闪烁扫描的图像质量。我们回顾性分析了16例年龄在10个月至14岁的连续儿科患者的31个肾脏。给药剂量采用基于体重的方法计算。两名阅片者随机评估原始平面后位图像和平滑滤波器图像；他们评估图像质量并进行缺损评估。视觉图像质量评估结果显示，平滑滤波器图像明显优于原始图像。尽管平滑滤波器图像在边缘清晰度方面略逊于原始图像，但在缺损评估中未观察到显著差异。我们证实，使用平滑滤波器的Tc-DMSA闪烁扫描可降低图像噪声，同时保持缺损评估性能并改善图像质量。
