Considerations for high-magnification high-cone-angle helical micro-CT

Trond Varslot; Andrew Kingston; Glenn Myers; Adrian Sheppard

doi:10.1117/12.929304

Considerations for high-magnification high-cone-angle helical micro-CT

Trond Varslot^*, Andrew Kingston, Glenn Myers, Adrian Sheppard

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

This paper is motivated by our groups recent move from a conventional micro-CT system with a circular source- trajectory, to that with with a helical source-trajectory. By using a helix we can now image well beyond the limiting cone-angle of 10 degrees for a circle. We routinely perform micro-CT with cone-angles greater than 50° by using the Katsevich theoretically-exact reconstruction algorithm. Imaging with such large cone-angles enables high-signal-to-noise-ratio imaging but requires the specimen to be in a very close proximity to the source. This brings about its own challenges. Here we present experimental considerations and data post-processing techniques that allow us to obtain high-fidelity high-resolution micro-CT images at extreme cone-angles.

Original language	English
Title of host publication	Developments in X-Ray Tomography VIII
DOIs	https://doi.org/10.1117/12.929304
Publication status	Published - 2012
Event	Developments in X-Ray Tomography VIII - San Diego, CA, United States Duration: 13 Aug 2012 → 15 Aug 2012

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8506
ISSN (Print)	0277-786X

Conference

Conference	Developments in X-Ray Tomography VIII
Country/Territory	United States
City	San Diego, CA
Period	13/08/12 → 15/08/12

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10.1117/12.929304

Cite this

@inproceedings{c1f0246d62b54835998523348442347c,

title = "Considerations for high-magnification high-cone-angle helical micro-CT",

abstract = "This paper is motivated by our groups recent move from a conventional micro-CT system with a circular source- trajectory, to that with with a helical source-trajectory. By using a helix we can now image well beyond the limiting cone-angle of 10 degrees for a circle. We routinely perform micro-CT with cone-angles greater than 50° by using the Katsevich theoretically-exact reconstruction algorithm. Imaging with such large cone-angles enables high-signal-to-noise-ratio imaging but requires the specimen to be in a very close proximity to the source. This brings about its own challenges. Here we present experimental considerations and data post-processing techniques that allow us to obtain high-fidelity high-resolution micro-CT images at extreme cone-angles.",

keywords = "Computed tomography, Helical micro-CT, Micro-CT",

author = "Trond Varslot and Andrew Kingston and Glenn Myers and Adrian Sheppard",

year = "2012",

doi = "10.1117/12.929304",

language = "English",

isbn = "9780819492234",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Developments in X-Ray Tomography VIII",

note = "Developments in X-Ray Tomography VIII ; Conference date: 13-08-2012 Through 15-08-2012",

}

Varslot, T, Kingston, A , Myers, G & Sheppard, A 2012, Considerations for high-magnification high-cone-angle helical micro-CT. in Developments in X-Ray Tomography VIII., 850614, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8506, Developments in X-Ray Tomography VIII, San Diego, CA, United States, 13/08/12. https://doi.org/10.1117/12.929304

Considerations for high-magnification high-cone-angle helical micro-CT. / Varslot, Trond; Kingston, Andrew ; Myers, Glenn et al.
Developments in X-Ray Tomography VIII. 2012. 850614 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8506).

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

TY - GEN

T1 - Considerations for high-magnification high-cone-angle helical micro-CT

AU - Varslot, Trond

AU - Kingston, Andrew

AU - Myers, Glenn

AU - Sheppard, Adrian

PY - 2012

Y1 - 2012

N2 - This paper is motivated by our groups recent move from a conventional micro-CT system with a circular source- trajectory, to that with with a helical source-trajectory. By using a helix we can now image well beyond the limiting cone-angle of 10 degrees for a circle. We routinely perform micro-CT with cone-angles greater than 50° by using the Katsevich theoretically-exact reconstruction algorithm. Imaging with such large cone-angles enables high-signal-to-noise-ratio imaging but requires the specimen to be in a very close proximity to the source. This brings about its own challenges. Here we present experimental considerations and data post-processing techniques that allow us to obtain high-fidelity high-resolution micro-CT images at extreme cone-angles.

AB - This paper is motivated by our groups recent move from a conventional micro-CT system with a circular source- trajectory, to that with with a helical source-trajectory. By using a helix we can now image well beyond the limiting cone-angle of 10 degrees for a circle. We routinely perform micro-CT with cone-angles greater than 50° by using the Katsevich theoretically-exact reconstruction algorithm. Imaging with such large cone-angles enables high-signal-to-noise-ratio imaging but requires the specimen to be in a very close proximity to the source. This brings about its own challenges. Here we present experimental considerations and data post-processing techniques that allow us to obtain high-fidelity high-resolution micro-CT images at extreme cone-angles.

KW - Computed tomography

KW - Helical micro-CT

KW - Micro-CT

UR - http://www.scopus.com/inward/record.url?scp=84872560080&partnerID=8YFLogxK

U2 - 10.1117/12.929304

DO - 10.1117/12.929304

M3 - Conference contribution

SN - 9780819492234

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Developments in X-Ray Tomography VIII

T2 - Developments in X-Ray Tomography VIII

Y2 - 13 August 2012 through 15 August 2012

ER -

Considerations for high-magnification high-cone-angle helical micro-CT

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