Tracking planar orientations of active MRI needles

Shashank Sathyanarayana, Pelin Aksit, Aravind Arepally, Parag V. Karmarkar, Meiyappan Solaiyappan, Ergin Atalar

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Purpose: To determine and track the planar orientation of active interventional devices without using localizing RF microcoils. Materials and Methods: An image-based tracking method that determines a device's orientation using projection images was developed. An automated and a manual detection scheme were implemented. The method was demonstrated in an in vivo mesocaval puncture procedure in swine, which required accurate orientation of an active transvascular needle catheter. Results: The plane of the catheter was determined using two projection images. The scan plane was adjusted automatically to follow the catheter plane, and its orientation with respect to a previously acquired target plane was displayed. The algorithm facilitated navigation for a fast and accurate puncture. Conclusion: Using image-based techniques, with no mechanical design changes, the orientation of an active intravascular probe could be tracked.

Original languageEnglish (US)
Pages (from-to)386-391
Number of pages6
JournalJournal of Magnetic Resonance Imaging
Issue number2
StatePublished - Aug 2007


  • Active devices
  • Catheter tracking
  • Interventional MRI
  • Loopless antenna
  • Projection images

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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