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MRI-guided percutaneous nephrostomy: a feasibility study

Juho Kariniemi1, Roberto Blanco Sequeiros, Risto Ojala

  • 1Department of Radiology, Oulu University Hospital, PO Box 50, 90029 Oulu, Finland. juho.kariniemi@oulu.fi

European Radiology
|November 27, 2008
PubMed

Insights

This study found magnetic resonance imaging (MRI)-guided percutaneous nephrostomy (PCN) is feasible and safe for dilated renal systems. Further development is needed for non-dilated kidneys.

Area of Science:

  • Radiology
  • Interventional Radiology
  • Medical Imaging

Background:

  • Percutaneous nephrostomy (PCN) is a common procedure.
  • MRI guidance offers potential advantages for interventional procedures.
  • Open-configuration low-field MRI systems present unique challenges and opportunities.

Purpose of the Study:

  • To evaluate the feasibility and safety of MRI-guided PCN.
  • To assess the utility of an open-configuration low-field MRI system for PCN.
  • To determine the efficacy of MRI-guided PCN in different renal collecting system dilatations.

Main Methods:

  • Prospective enrollment of eight patients.
  • Procedures performed using a 0.23-T open C-arm MRI system with optical tracking.
  • Utilized MRI-compatible drainage kits and the Seldinger technique.
  • All interventions guided solely by MRI.

Main Results:

  • Seven out of eight PCN procedures were successful.
  • Successful catheter placement was achieved in all dilated renal systems.
  • PCN was unsuccessful in one non-dilated renal system.
  • Mean procedure time was 26 minutes.
  • No major complications were reported during or after the procedures.

Conclusions:

  • MRI-guided PCN is feasible and safe for dilated renal collecting systems.
  • The technique requires further development for application in non-dilated kidneys.
  • This approach may offer a viable alternative for specific patient populations.

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