Non-local means resolution enhancement of lung 4D-CT data.

Y. Zhang, Guorong Wu, Pew Thian Yap, Qianjin Feng, Jun Lian, Wufan Chen, Dinggang Shen

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)

Abstract

Image resolution in 4D-CT is a crucial bottleneck that needs to be overcome for improved dose planning in radiotherapy for lung cancer. In this paper, we propose a novel patch-based algorithm to enhance the image quality of 4D-CT data. Our premise is that anatomical information missing in one phase can be recovered from complementary information embedded in other phases. We employ a patch-based mechanism to propagate information across phases for reconstruction of intermediate slices in the axial direction, where resolution is normally the lowest. Specifically, structurally-matching and spatially-nearby patches are combined for reconstruction of each patch. For greater sensitivity to anatomical nuances, we further employ a quad-tree technique to adaptively partition each slice of the image in each phase for more fine-grained refinement. Our evaluation based on a public 4D-CT lung data indicates that our algorithm gives very promising results with significantly enhanced image structures.

Original languageEnglish
Title of host publicationMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
Pages214-222
Number of pages9
Volume15
EditionPt 1
Publication statusPublished - 2012 Dec 1

Fingerprint

Four-Dimensional Computed Tomography
Lung
Lung Neoplasms
Radiotherapy

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Zhang, Y., Wu, G., Yap, P. T., Feng, Q., Lian, J., Chen, W., & Shen, D. (2012). Non-local means resolution enhancement of lung 4D-CT data. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention (Pt 1 ed., Vol. 15, pp. 214-222)

Non-local means resolution enhancement of lung 4D-CT data. / Zhang, Y.; Wu, Guorong; Yap, Pew Thian; Feng, Qianjin; Lian, Jun; Chen, Wufan; Shen, Dinggang.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 15 Pt 1. ed. 2012. p. 214-222.

Research output: Chapter in Book/Report/Conference proceedingChapter

Zhang, Y, Wu, G, Yap, PT, Feng, Q, Lian, J, Chen, W & Shen, D 2012, Non-local means resolution enhancement of lung 4D-CT data. in Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 1 edn, vol. 15, pp. 214-222.
Zhang Y, Wu G, Yap PT, Feng Q, Lian J, Chen W et al. Non-local means resolution enhancement of lung 4D-CT data. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 1 ed. Vol. 15. 2012. p. 214-222
Zhang, Y. ; Wu, Guorong ; Yap, Pew Thian ; Feng, Qianjin ; Lian, Jun ; Chen, Wufan ; Shen, Dinggang. / Non-local means resolution enhancement of lung 4D-CT data. Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 15 Pt 1. ed. 2012. pp. 214-222
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