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Computerized methodology for micro-CT and histological data inflation using an IVUS based translation map.

Lambros S Athanasiou1, George A Rigas1, Antonis I Sakellarios1

  • 1Unit of Medical Technology and Intelligent Information Systems, Department of Materials Science and Engineering, University of Ioannina, PO Box 1186, GR 45110 Ioannina, Greece.

Computers in Biology and Medicine
|March 17, 2015
PubMed
Summary

A new framework inflates micro-computed tomography (micro-CT) and histology images to match intravascular ultrasound (IVUS) data. This image inflation method improves plaque area detection sensitivity in cardiovascular research.

Keywords:
HistologyImage registrationIntravascular ultrasoundMicro-CTPlaque characterization

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Area of Science:

  • Medical imaging
  • Cardiovascular research
  • Image analysis

Background:

  • Accurate 3D reconstruction of arterial structures is crucial for cardiovascular research.
  • Discrepancies in resolution and data formats between micro-CT, histology, and intravascular ultrasound (IVUS) pose challenges.
  • Existing methods lack precise alignment and inflation capabilities for multimodal image data.

Purpose of the Study:

  • To present a novel framework for inflating micro-computed tomography (micro-CT) and histology images.
  • To enable accurate data fusion and comparison with intravascular ultrasound (IVUS) images.
  • To enhance the sensitivity of plaque area detection by aligning multimodal imaging data.

Main Methods:

  • Manual co-registration of micro-CT/histology and IVUS images using fiducial landmarks.
  • Automatic segmentation of the lumen in both micro-CT/histology and IVUS images.
  • Image inflation of micro-CT/histology data based on contour differences with IVUS images.

Main Results:

  • The proposed inflation methodology was validated by comparing plaque areas.
  • Increased sensitivity of plaque area matching was observed: 7% for histology and 22% for micro-CT.
  • The framework effectively aligns and enhances the comparability of different imaging modalities.

Conclusions:

  • The developed image inflation framework successfully integrates micro-CT and histology data with IVUS.
  • This methodology significantly improves the accuracy of plaque area quantification.
  • The approach offers a valuable tool for advancing cardiovascular research and diagnostic imaging.