One-Class Acoustic Characterization Applied to Blood Detection in IVUS

  • Sean M. O’Malley
  • Morteza Naghavi
  • Ioannis A. Kakadiaris
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4791)

Abstract

Intravascular ultrasound (IVUS) is an invasive imaging modality capable of providing cross-sectional images of the interior of a blood vessel in real time and at normal video framerates (10-30 frames/s). Low contrast between the features of interest in the IVUS imagery remains a confounding factor in IVUS analysis; it would be beneficial therefore to have a method capable of detecting certain physical features imaged under IVUS in an automated manner. We present such a method and apply it to the detection of blood. While blood detection algorithms are not new in this field, we deviate from traditional approaches to IVUS signal characterization in our use of 1-class learning. This eliminates certain problems surrounding the need to provide “foreground” and “background” (or, more generally, n-class) samples to a learner. Applied to the blood-detection problem on 40 MHz recordings made in vivo in swine, we are able to achieve ~95% sensitivity with ~90% specificity at a radial resolution of ~600 μm.

Keywords

Support Vector Machine Intravascular Ultrasound IVUS Catheter Radial Resolution Blood Detection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Sean M. O’Malley
    • 1
  • Morteza Naghavi
    • 2
  • Ioannis A. Kakadiaris
    • 1
  1. 1.Computational Biomedicine Lab, University of Houston; Houston, TX 
  2. 2.Association for Eradication of Heart Attack; Houston, TX 

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