[图像重建方法对数字乳腺断层合成中图像质量的影响]
[Influence of Image Reconstruction Method on Image Quality in Digital Breast Tomosynthesis].
作者信息
Nishikawa Mami, Tominaga Kaori, Ueno Tokitaka, Yasukawa Shiori, Hiroshige Kana, Mouri Kanako, Kozawa Yoshihiro, Uemura Tadahisa, Fujimitsu Ritsuko, Yoshimitsu Kengo
机构信息
Department of Radiological Technology, Fukuoka University Hospital.
Department of Radiology, Faculty of Medicine, Fukuoka University.
出版信息
Nihon Hoshasen Gijutsu Gakkai Zasshi. 2021;77(1):14-22. doi: 10.6009/jjrt.2021_JSRT_77.1.14.
PURPOSE
Digital breast tomosynthesis (DBT) imaging uses two types of image reconstruction. methods, i.e., filtered back projection (FBP) method and an iterative reconstruction (IR) method. Although the effect of the difference in the image reconstruction method on the image quality has been reported, these studies were performed using different apparatus or conditions. In this study, we examined the effect of image reconstruction on the image quality using the same equipment under the same conditions.
METHOD
We measured reflection artifact, sharpness, signal detection ability, and granularity using DBT-photographed images by both the FBP and the IR methods.
RESULT
Although the difference between the two methods was subtle for granularity, IR was found to be superior to FBP in all items tested.
CONCLUSION
This study suggested the clinical usefulness of IR over FBP.
目的
数字乳腺断层合成（DBT）成像使用两种图像重建方法，即滤波反投影（FBP）法和迭代重建（IR）法。尽管已经报道了图像重建方法的差异对图像质量的影响，但这些研究是在不同的设备或条件下进行的。在本研究中，我们在相同条件下使用相同设备检查了图像重建对图像质量的影响。
方法
我们使用FBP法和IR法通过DBT拍摄的图像测量反射伪影、清晰度、信号检测能力和颗粒度。
结果
尽管两种方法在颗粒度方面的差异很细微，但发现在所有测试项目中IR均优于FBP。
结论
本研究表明IR在临床上比FBP更有用。
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