System and method for intravascular structural analysis...

Details System and method for intravascular structural analysis... System and method for intravascular structural analysis...

A - Human Necessities

61

B

A61B 5/00 (2006.01) A61B 8/12 (2006.01)

Patent

CA 2720637

A multimodal intravascular analysis uses a structural intravascular analysis modality to compensate for a chemical analysis modality. Examples of structural analysis are IVUS, OCT, including optical coherence domain Reflectometry (OCDR) and optical frequency domain imaging (OFDI), and/or sonar rangefinding. Examples of chemical or functional analysis are optical, NIR, Raman, fluorescence and spectroscopy, thermography and reflectometry. In one example, the structural analysis is used to characterize the environment structurally, such as catheter head- vessel wall distance. This information is then used to select from two or more algorithms which are depth specific (e.g. shallow vs. deep), to achieve improved accuracy in the chemical or functional analysis.

Linvention concerne une analyse intravasculaire multimodale, qui utilise une modalité danalyse intravasculaire structurale pour compenser une modalité danalyse chimique. Des exemples danalyse structurale sont IVUS, OCT, y compris réflectométrie optique à cohérence (OCDR) et imagerie optique (OFDI) et/ou télémétrie sonique. Des exemples danalyse chimique ou fonctionnelle sont loptique, le NIR, le Raman, la fluorescence et la spectroscopie, la thermographie et la réflectométrie. Dans un exemple, lanalyse structurale est utilisée pour caractériser lenvironnement de manière structurale, comme la distance paroi du vaisseau-tête du cathéter. Cette information est alors utilisée pour sélectionner deux algorithmes ou plus, qui sont spécifiques de la profondeur (par exemple plat par rapport à profond), pour atteindre une sécurité améliorée de lanalyse chimique ou fonctionnelle.

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