Rollback reconstruction for TDC enhanced perfusion imaging

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

doi:10.1007/s41365-021-00918-7

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Rollback reconstruction for TDC enhanced perfusion imaging

NUCLEAR ELECTRONICS AND INSTRUMENTATION | Updated：2021-09-07

- Rollback reconstruction for TDC enhanced perfusion imaging
- Rollback reconstruction for TDC enhanced perfusion imaging
- Nuclear Science and Techniques 2021年32卷第8期文章编号：80
- Affiliations：
  
  1.Laboratory of Image Science and Technology, Southeast University, Nanjing 210096, China
  2.Department of Radiology, General Hospital of the Northern Theater of the Chinese People’s Liberation Army, Shenyang 110016, China.
  3.Department of Radiotherapy, General Hospital of the Northern Theater of the Chinese People’s Liberation Army, Shenyang 110016, China.
  4.Centre de Recherche en Information Biomedicale Sino-Francais (LIA CRIBs), Rennes 35000, France
- Author bio：
  
  Yang Chen, chenyang.list@seu.edu.cn
- Funds：
  
  State’s Key Project of Research and Development Plan(2017YFC0109202;2017YFA0104302);National Natural Science Foundation(61871117);Science and Technology Program of Guangdong(2018B030333001)
- DOI：10.1007/s41365-021-00918-7
  中图分类号：
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Jia-Shun Liu, Yi-Kun Zhang, Hui Tang, 等. Rollback reconstruction for TDC enhanced perfusion imaging[J]. Nuclear Science and Techniques, 2021,32(8):80

Jia-Shun Liu, Yi-Kun Zhang, Hui Tang, et al. Rollback reconstruction for TDC enhanced perfusion imaging[J]. Nuclear Science and Techniques, 2021,32(8):80
Jia-Shun Liu, Yi-Kun Zhang, Hui Tang, 等. Rollback reconstruction for TDC enhanced perfusion imaging[J]. Nuclear Science and Techniques, 2021,32(8):80 DOI： 10.1007/s41365-021-00918-7.

Jia-Shun Liu, Yi-Kun Zhang, Hui Tang, et al. Rollback reconstruction for TDC enhanced perfusion imaging[J]. Nuclear Science and Techniques, 2021,32(8):80 DOI： 10.1007/s41365-021-00918-7.

摘要

Abstract

Tomographic perfusion imaging is a significant imaging modality for stroke diagnosis. However, the low rotational speed of the C-arm (6 to 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 CBCT. The proposed method can improve the temporal resolution by increasing the sample points used for calculating the TDC. Combined with existing techniques, the algorithm allows slow-rotating scanners to be used for perfusion imaging purposes. In the experiments, the proposed method was compared with other dynamic reconstruction algorithms based on standard reconstruction and the temporal interpolation approach. The presented algorithm could improve the temporal resolution without increasing the X-ray exposure time or contrast agent.

关键词

Keywords

Rollback reconstructionCBCTTime resolutionTime density curve

references

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