Rollback reconstruction for TDC enhanced perfusion imaging

作     者：Jia-Shun Liu Yi-Kun Zhang Hui Tang Li-Bo Zhang Ben-Qiang Yang Ying Yan Li-Min Luo Yang Chen Jia-Shun Liu;Yi-Kun Zhang;Hui Tang;Li-Bo Zhang;Ben-Qiang Yang;Ying Yan;Li-Min Luo;Yang Chen

作者机构：Laboratory of Image Science and TechnologySoutheast UniversityNanjing 210096China Department of RadiologyGeneral Hospital of the Northern Theater of the Chinese People’s Liberation ArmyShenyang 110016China Department of RadiotherapyGeneral Hospital of the Northern Theater of the Chinese People’s Liberation ArmyShenyang 110016China Centre de Recherche en Information Biomedicale SinoFrancais(LIA CRIBs)35000 RennesFrance 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2021年第32卷第8期

页      面：23-33页

核心收录：

学科分类：1002[医学-临床医学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 100204[医学-神经病学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 10[医学] 

基　　金：supported in part by the State’s Key Project of Research and Development Plan (Nos. 2017YFC0109202,2017YFA0104302) the National Natural Science Foundation (No.61871117) Science and Technology Program of Guangdong (No.2018B030333001) 

主　　题：Rollback reconstruction CBCT Time resolution Time density curve 

摘      要：Tomographic perfusion imaging is a significant imaging modality for stroke ***,the low rotational speed of the C-arm(6–8 s per circle)is a challenge for applying perfusion imaging in C-arm cone beam computed tomography(CBCT).Traditional reconstruction methods cannot remove the artifacts caused by the slow rotational speed or acquire enough sample points to restore the time density curve(TDC).This paper presents a dynamic rollback reconstruction method for *** proposed method can improve the temporal resolution by increasing the sample points used for calculating the *** with existing techniques,the algorithm allows slow-rotating scanners to be used for perfusion imaging *** the experiments,the proposed method was compared with other dynamic reconstruction algorithms based on standard reconstruction and the temporal interpolation *** presented algorithm could improve the temporal resolution without increasing the X-ray exposure time or contrast agent.