[1]齐泽瑶,王远军. 基于全变分模型的CT不完全角度重建算法研究进展[J].中国医学物理学杂志,2019,36(2):180-184.[doi:1005-202X(2019)02-0180-05]
 QI Zeyao,WANG Yuanjun. Research progress on limited-angle CT reconstruction algorithm based on total variation model[J].Chinese Journal of Medical Physics,2019,36(2):180-184.[doi:1005-202X(2019)02-0180-05]
点击复制

 基于全变分模型的CT不完全角度重建算法研究进展()
分享到:

《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
36卷
期数:
2019年第2期
页码:
180-184
栏目:
医学影像物理
出版日期:
2019-02-25

文章信息/Info

Title:
 Research progress on limited-angle CT reconstruction algorithm based on total variation model
文章编号:
R318;TP391
作者:
 齐泽瑶王远军
 上海理工大学医疗器械与食品学院, 上海 200093
Author(s):
 QI Zeyao WANG Yuanjun
 School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
关键词:
 计算机断层扫描不完全角度重建全变分综述
Keywords:
 Keywords: computed tomography limited-angle CT reconstruction total variation review
分类号:
R318;TP391
DOI:
1005-202X(2019)02-0180-05
文献标志码:
A
摘要:
 在计算机断层扫描成像领域,不完全角度重建算法可以在不完备的投影数据中重建出质量较好的图像,而其中比较突出的一类算法是基于全变分模型的重建算法。研究者们在此模型的基础上提出了许多相关的算法,重建出了质量更好的图像。本文首先简要介绍了全变分模型重建算法,然后在模型改进和求解算法两个方面对此模型的重建算法进行研究。在模型改进方面主要介绍了根据全变分模型的局限性以及图像的内涵信息引入相关的先验(方向信息、非局部信息、高阶梯度信息等)来改善图像的重建性能。在求解算法方面主要介绍了经典的梯度下降算法以及基于稀疏优化理论的交替方向最小化算法。最后分析总结了目前存在的问题以及提出模型改进和求解算法两方面相结合依旧是未来发展的趋势。
Abstract:
 Abstract: Using limited-angle CT reconstruction algorithm can reconstruct a CT image of good quality from limited projection data, and the most prominent algorithms among them are based on total variation (TV) model. So far, many related algorithms based on TV model have been proposed to reconstruct images of better quality. Herein the reconstruction algorithms based on TV model are briefly introduced and then studied in two aspects, namely model improvement and solution algorithm. In terms of model improvement, we mainly introduce the methods about how to improve the reconstruction performance of images by introducing relevant prior information (direction information, non-local information, high-order gradient information, etc.) based on the limitations of the TV model and the connotation information of the image. In terms of solution algorithm, we mainly introduce classical gradient descent algorithms and the alternating direction minimization algorithm based on sparse optimization theory. Finally, the existing problems are analyzed and summarized. In conclusion, the combination of model improvement and solution algorithm is still the trend of future development of TV-based limited-angle CT reconstruction algorithm.

相似文献/References:

[1]王遥,霍万里,熊壮,等.TACE手术中不同站姿下铅眼镜和铅面罩对医生眼晶状体防护效果的蒙特卡洛模拟比较[J].中国医学物理学杂志,2016,33(6):553.[doi:DOI:10.3969/j.issn.1005-202X.2016.06.003]
 [J].Chinese Journal of Medical Physics,2016,33(2):553.[doi:DOI:10.3969/j.issn.1005-202X.2016.06.003]
[2]张新,谷晓芳,王培臣,等.轻离子束治疗设备注册检验关键技术问题[J].中国医学物理学杂志,2016,33(6):559.[doi:10.3969/j.issn.1005-202X.2016.06.004]
 [J].Chinese Journal of Medical Physics,2016,33(2):559.[doi:10.3969/j.issn.1005-202X.2016.06.004]
[3]江芬芬,王培,康盛伟,等. 热释光剂量片测量肺部肿瘤放疗剂量的方法[J].中国医学物理学杂志,2016,33(6):564.[doi:10.3969/j.issn.1005-202X.2016.06.005]
 [J].Chinese Journal of Medical Physics,2016,33(2):564.[doi:10.3969/j.issn.1005-202X.2016.06.005]
[4]刘洪源,彭威,杨锐,等. 锥形束CT离线校正肺癌摆位误差[J].中国医学物理学杂志,2016,33(6):573.[doi:10.3969/j.issn.1005-202X.2016.06.007]
 [J].Chinese Journal of Medical Physics,2016,33(2):573.[doi:10.3969/j.issn.1005-202X.2016.06.007]
[5]赵彪,潘香,杨毅,等. 右乳癌保乳术后瘤床同步X线和后程电子线补量调强放疗剂量学比较[J].中国医学物理学杂志,2016,33(6):576.[doi:10.3969/j.issn.1005-202X.2016.06.008]
 [J].Chinese Journal of Medical Physics,2016,33(2):576.[doi:10.3969/j.issn.1005-202X.2016.06.008]
[6]邓南,钱建庭,刁现芬,等. 基于宽带检测放疗X-光光声效应仿体实验[J].中国医学物理学杂志,2016,33(9):865.[doi:DOI:10.3969/j.issn.1005-202X.2016.09.001]
 [J].Chinese Journal of Medical Physics,2016,33(2):865.[doi:DOI:10.3969/j.issn.1005-202X.2016.09.001]
[7]张先稳,李军,张西志,等. 宫颈癌术后5野调强放疗4个变量组合的最佳治疗模式的剂量学[J].中国医学物理学杂志,2016,33(9):872.[doi:10.3969/j.issn.1005-202X.2016.09.002]
 [J].Chinese Journal of Medical Physics,2016,33(2):872.[doi:10.3969/j.issn.1005-202X.2016.09.002]
[8]胡健,李承军,徐利明,等. 床面倾斜对剂量验证通过率的影响[J].中国医学物理学杂志,2016,33(9):881.[doi:10.3969/j.issn.1005-202X.2016.09.003]
 [J].Chinese Journal of Medical Physics,2016,33(2):881.[doi:10.3969/j.issn.1005-202X.2016.09.003]
[9]陈亚正,肖明勇,孙春堂,等. 准直器角度对宫颈癌术后VMAT计划的影响[J].中国医学物理学杂志,2016,33(9):885.[doi:10.3969/j.issn.1005-202X.2016.09.004]
 [J].Chinese Journal of Medical Physics,2016,33(2):885.[doi:10.3969/j.issn.1005-202X.2016.09.004]
[10]李毅,唐丰文,张晓智. 基于四维CT和锥形束CT确定非小细胞肺癌放疗靶区外放边界[J].中国医学物理学杂志,2016,33(9):892.[doi:10.3969/j.issn.1005-202X.2016.09.005]
 [J].Chinese Journal of Medical Physics,2016,33(2):892.[doi:10.3969/j.issn.1005-202X.2016.09.005]
[11]郭广威,莫贤海,陈炯,等. 低剂量与标准剂量CT对慢性鼻窦炎手术高风险患者图像质量和辐射剂量的影响[J].中国医学物理学杂志,2017,34(11):1137.[doi:DOI:10.3969/j.issn.1005-202X.2017.11.011]
 GUO Guangwei,MO Xianhai,CHEN Jiong,et al. Evaluation of low-dose versus standard-dose CT examination in surgical high-risk patients with chronic rhinosinusitis[J].Chinese Journal of Medical Physics,2017,34(2):1137.[doi:DOI:10.3969/j.issn.1005-202X.2017.11.011]
[12]张巧莹,黄晓宇,梁小红,等. PACS系统三维测量方法与多田公式计算方法在脑出血测量的准确性比较[J].中国医学物理学杂志,2019,36(3):296.[doi:DOI:10.3969/j.issn.1005-202X.2019.03.010]
 ZHANG Qiaoying,,et al. Comparison of accuracy between Picture Archiving and Communication Systems three-dimensional measuring method and Tada formula in intracerebral hemorrhage volume measurement[J].Chinese Journal of Medical Physics,2019,36(2):296.[doi:DOI:10.3969/j.issn.1005-202X.2019.03.010]

备注/Memo

备注/Memo:
 【收稿日期】2018-08-03
【基金项目】国家自然科学基金(61201067);上海市自然科学基金(18ZR1426900)
【作者简介】齐泽瑶,硕士,研究方向:CT图像重建算法研究,E-mail: 871166527@qq.com
【通信作者】王远军,博士,副教授,研究方向:生物医学工程、医学图像处理,E-mail: yjwang@usst.edu.cn
更新日期/Last Update: 2019-02-26