Generation of 4D access corridors from real-time multislice MRI for guiding transapical aortic valvuloplasties. Academic Article uri icon

Overview

abstract

  • Real-time image-guided cardiac procedures (manual or robot-assisted) are emerging due to potential improvement in patient management and reduction in the overall cost. These minimally invasive procedures require both real-time visualization and guidance for maneuvering an interventional tool safely inside the dynamic environment of a heart. In this work, we propose an approach to generate dynamic 4D access corridors from the apex to the aortic annulus for performing real-time MRI guided transapical valvuloplasties. Ultrafast MR images (collected every 49.3 ms) are processed on-the-fly using projections to extract a conservative dynamic trace in form of a three-dimensional access corridor. Our experimental results show that the reconstructed corridors can be refreshed with a delay of less than 0.5ms to reflect the changes inside the left ventricle caused by breathing motion and the heartbeat.

publication date

  • January 1, 2011

Research

keywords

  • Aortic Valve
  • Cardiac Surgical Procedures
  • Catheterization
  • Magnetic Resonance Imaging

Identity

Scopus Document Identifier

  • 80053508340

Digital Object Identifier (DOI)

  • 10.1007/978-3-642-23623-5_32

PubMed ID

  • 22003624

Additional Document Info

volume

  • 14

issue

  • Pt 1