[1]李明强,马昆,陶熙,等.数字乳腺层析成像系统影像链的设计与优化[J].南方医科大学学报,2019,(02):192.[doi:10.12122/j.issn.1673-4254.2019.02.11]
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数字乳腺层析成像系统影像链的设计与优化()
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《南方医科大学学报》[ISSN:1673-4254/CN:44-1627/R]

卷:
期数:
2019年02期
页码:
192
栏目:
出版日期:
2019-02-28

文章信息/Info

Title:
Key technologies in digital breast tomosynthesis system: theory, design, and optimization
作者:
李明强马昆陶熙王永波何基韦子权谌高峰李穗曾栋边兆英吴国辉廖山马建华
关键词:
数字乳腺层析成像影像链的设计与优化滤波反投影几何校正投影增强
Keywords:
digital breast tomosynthesis image chain design and optimization filtered back projection geometric correction projection enhancement
DOI:
10.12122/j.issn.1673-4254.2019.02.11
摘要:
目的针对数字乳腺层析成像技术(DBT)需求,研制DBT整机系统,实现其成像影像链的设计与优化。方法基于三维X 射线断层成像技术以及数字影像处理技术,作者结合DBT成像扫描模式,研究其投影数据校正、几何校正、投影增强、滤波调制 及图像重建方法,并搭建了硬件测试系统。实验中,利用标准ACR体模与高分辨率体模,对系统稳定性及噪声水平进行评估; 并采用商用设备的病人投影数据测试影像链成像算法效果。结果采用几何校正参数重建高分辨率体模的图像,线对清晰,无 混淆伪影;滤波调制后重建的ACR体模图像中,钙化点、囊肿、纤维结构更加清楚;增强处理后重建的病人乳腺图像,组织间对 比度更高,病灶显示更加清晰。结论本文所介绍的DBT系统可用于乳腺断层成像,图像质量与商用DBT系统相当,为乳腺疾 病的诊断提供重要的影像信息。
Abstract:
Objective To develop a digital breast tomosynthesis (DBT) imaging system with optimizes imaging chain. Method Based on 3D tomography and DBT imaging scanning, we analyzed the methods for projection data correction, geometric correction, projection enhancement, filter modulation, and image reconstruction, and established a hardware testing platform. In the experiment, the standard ACR phantom and high-resolution phantom were used to evaluate the system stability and noise level. The patient projection data of commercial equipment was used to test the effect of the imaging algorithm. Results In the high-resolution phantom study, the line pairs were clear without confusing artifacts in the images reconstructed with the geometric correction parameters. In ACR phantom study, the calcified foci, cysts, and fibrous structures were more clearly defined in the reconstructed images after filtering and modulation. The patient data study showed a high contrast between tissues, and the lesions were more clearly displayed in the reconstructed image. Conclusion This DBT imaging system can be used for mammary tomography with an image quality comparable to that of commercial DBT systems to facilitate imaging diagnosis of breast diseases.

相似文献/References:

[1]张忻宇,张华,边兆英,等.投影数据校正对数字乳腺层析成像质量的影响[J].南方医科大学学报,2017,(03):323.
[2]陈美玲,陶熙,李华勇,等.基于噪声相关性的惩罚加权最小二乘算法在低剂量数字乳腺层析成像中的应用[J].南方医科大学学报,2018,(01):48.

更新日期/Last Update: 1900-01-01