Atlas-assisted tomography: Registration of a deformable atlas to compensate for limited-angle cone-beam trajectory

Ofri Sadowsky; Krishnakumar Ramamurthi; Lotta M. Ellingsen; Gouthami Chintalapani; Jerry L. Prince; Russell H. Taylor

Atlas-assisted tomography: Registration of a deformable atlas to compensate for limited-angle cone-beam trajectory

Ofri Sadowsky, Krishnakumar Ramamurthi, Lotta M. Ellingsen, Gouthami Chintalapani, Jerry L. Prince, Russell H. Taylor

Whiting School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We present a method to improve the quality of cone-beam tomographic images computed from an intra-operative C-arm scan by adding information from an anatomical atlas. Limited range of C-arm view angles leads to reconstruction artifacts and poor anatomical detail. We propose to complete the missing views with simulated projections of a statistical anatomical model, which is deformably registered to match the data in the C-arm images. This paper presents the methods used to create the atlas and to register it with x-ray images. We compare the results of seven leave-one-out simulated hybrid reconstruction tests on a population of 13 subjects, with "ground-truth" CT, a classical short-scan, and a partial-scan reconstruction.

Original language	English (US)
Title of host publication	2006 3rd IEEE International Symposium on Biomedical Imaging
Subtitle of host publication	From Nano to Macro - Proceedings
Pages	1244-1247
Number of pages	4
State	Published - Nov 17 2006
Event	2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Arlington, VA, United States Duration: Apr 6 2006 → Apr 9 2006

Publication series

Name	2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings
Volume	2006

Other

Other	2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro
Country	United States
City	Arlington, VA
Period	4/6/06 → 4/9/06

ASJC Scopus subject areas

Engineering(all)

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Sadowsky, O., Ramamurthi, K., Ellingsen, L. M., Chintalapani, G., Prince, J. L., & Taylor, R. H. (2006). Atlas-assisted tomography: Registration of a deformable atlas to compensate for limited-angle cone-beam trajectory. In 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings (pp. 1244-1247). [1625150] (2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings; Vol. 2006).

Atlas-assisted tomography : Registration of a deformable atlas to compensate for limited-angle cone-beam trajectory. / Sadowsky, Ofri; Ramamurthi, Krishnakumar; Ellingsen, Lotta M.; Chintalapani, Gouthami; Prince, Jerry L.; Taylor, Russell H.

2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings. 2006. p. 1244-1247 1625150 (2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings; Vol. 2006).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sadowsky, O, Ramamurthi, K, Ellingsen, LM, Chintalapani, G, Prince, JL & Taylor, RH 2006, Atlas-assisted tomography: Registration of a deformable atlas to compensate for limited-angle cone-beam trajectory. in 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings., 1625150, 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings, vol. 2006, pp. 1244-1247, 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro, Arlington, VA, United States, 4/6/06.

Sadowsky O, Ramamurthi K, Ellingsen LM, Chintalapani G, Prince JL , Taylor RH. Atlas-assisted tomography: Registration of a deformable atlas to compensate for limited-angle cone-beam trajectory. In 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings. 2006. p. 1244-1247. 1625150. (2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings).

Sadowsky, Ofri ; Ramamurthi, Krishnakumar ; Ellingsen, Lotta M. ; Chintalapani, Gouthami ; Prince, Jerry L. ; Taylor, Russell H. / Atlas-assisted tomography : Registration of a deformable atlas to compensate for limited-angle cone-beam trajectory. 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings. 2006. pp. 1244-1247 (2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings).

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abstract = "We present a method to improve the quality of cone-beam tomographic images computed from an intra-operative C-arm scan by adding information from an anatomical atlas. Limited range of C-arm view angles leads to reconstruction artifacts and poor anatomical detail. We propose to complete the missing views with simulated projections of a statistical anatomical model, which is deformably registered to match the data in the C-arm images. This paper presents the methods used to create the atlas and to register it with x-ray images. We compare the results of seven leave-one-out simulated hybrid reconstruction tests on a population of 13 subjects, with {"}ground-truth{"} CT, a classical short-scan, and a partial-scan reconstruction.",

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