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Multigrid reconstruction of micro-CT data
KTH, School of Technology and Health (STH).
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Multigrid-rekonstruktion av microCT-data (Swedish)
Abstract [en]

The group of Medical Imaging at School of Health and Technology is developing a micro-CT scanner for small animal imaging. Micro-CT refers to reconstructing CT image with resolution in scale of micrometer, and this goal is achieved by acquiring projection data with high resolution. Nevertheless, high resolution projection data and high resolution recon- struction image have introduced the problem of memory insufficiency, as more points need to be processed during micro-CT reconstruction.

For this reason, this paper has investigated how to alleviate the burden on computers memory through applying multi-grid reconstruction algo- rithms, which means to reconstruct region of interest (ROI) with high resolution while reconstructing background with lower resolution. By do- ing that, pixels being considered in the reconstruction space has been decreased and normal computers will be capable to handle reconstruction of micro-CT image.

Through testing on numerical data (Shepp Logan Phantom), it can be concluded that multi-grid reconstruction algorithm could reconstruct high fidelity ROI with much faster speed comparing to full resolution reconstruction. Moreover, this proposed technique can also give decent reconstruction to data acquired from micro-CT scanner. 

Place, publisher, year, edition, pages
2017. , 62 p.
Series
TRITA-STH, 2017:73
National Category
Medical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-211180OAI: oai:DiVA.org:kth-211180DiVA: diva2:1127993
Subject / course
Medical Engineering
Educational program
Master of Science in Engineering - Medical Engineering
Presentation
2017-06-08, Stockholm, 13:00 (English)
Supervisors
Examiners
Available from: 2017-08-06 Created: 2017-07-20 Last updated: 2017-08-06Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
  • en-GB
  • en-US
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Output format
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