Improved superficial brain hemorrhage visualization in susceptibility weighted images by constrained minimum intensity projection

Marcelo A. Castro, Dzung L. Pham, John Butman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Minimum intensity projection is a technique commonly used to display magnetic resonance susceptibility weighted images, allowing the observer to better visualize hemorrhages and vasculature. The technique displays the minimum intensity in a given projection within a thick slab, allowing different connectivity patterns to be easily revealed. Unfortunately, the low signal intensity of the skull within the thick slab can mask superficial tissues near the skull base and other regions. Because superficial microhemorrhages are a common feature of traumatic brain injury, this effect limits the ability to proper diagnose and follow up patients. In order to overcome this limitation, we developed a method to allow minimum intensity projection to properly display superficial tissues adjacent to the skull. Our approach is based on two brain masks, the largest of which includes extracerebral voxels. The analysis of the rind within both masks containing the actual brain boundary allows reclassification of those voxels initially missed in the smaller mask. Morphological operations are applied to guarantee accuracy and topological correctness, and the mean intensity within the mask is assigned to all outer voxels. This prevents bone from dominating superficial regions in the projection, enabling superior visualization of cortical hemorrhages and vessels.

Original languageEnglish (US)
Title of host publicationMedical Imaging 2016 - PACS and Imaging Informatics
Subtitle of host publicationNext Generation and Innovations
EditorsTessa S. Cook, Jianguo Zhang
PublisherSPIE
ISBN (Electronic)9781510600249
DOIs
StatePublished - 2016
EventMedical Imaging 2016 - PACS and Imaging Informatics: Next Generation and Innovations - San Diego, United States
Duration: Feb 28 2016Feb 29 2016

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume9789
ISSN (Print)1605-7422

Other

OtherMedical Imaging 2016 - PACS and Imaging Informatics: Next Generation and Innovations
CountryUnited States
CitySan Diego
Period2/28/162/29/16

Keywords

  • Image segmentation
  • Magnetic resonance imaging
  • Minimum intensity projection
  • Susceptibility weighted imaging
  • Traumatic brain injury

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Improved superficial brain hemorrhage visualization in susceptibility weighted images by constrained minimum intensity projection'. Together they form a unique fingerprint.

  • Cite this

    Castro, M. A., Pham, D. L., & Butman, J. (2016). Improved superficial brain hemorrhage visualization in susceptibility weighted images by constrained minimum intensity projection. In T. S. Cook, & J. Zhang (Eds.), Medical Imaging 2016 - PACS and Imaging Informatics: Next Generation and Innovations [97890D] (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 9789). SPIE. https://doi.org/10.1117/12.2216959