MRI-guided brain biopsies using a 0.2 Tesla open magnet.

Area of Science:

• Medical Imaging
• Neurosurgery
• Interventional Radiology

Background:

• Interventional procedures require precise guidance for optimal outcomes.
• Open magnetic resonance (MR) systems offer unique advantages for certain interventions.
• Low-field MR systems present specific technical challenges and opportunities.

Purpose of the Study:

• To present the technique of interventional on-line MR-guided procedures.
• To evaluate the feasibility and outcomes of procedures performed in a 0.2 Tesla open magnet.
• To discuss recent advancements in MR technology for interventional applications.

Main Methods:

• Utilized a 0.2 Tesla open magnetic resonance imaging (MRI) system for real-time guidance.
• Performed 72 interventional procedures, including 60 brain biopsies and 12 catheter placements for drainage.
• Developed and implemented specialized MR-coil designs and MR-sequences.

Main Results:

• Successfully completed 72 procedures under on-line MR guidance.
• Demonstrated the utility of the 0.2 T open magnet for brain biopsies and cyst/abscess drainage.
• Identified key advantages and limitations of the technique in this setting.

Conclusions:

• Interventional on-line MR-guided procedures are feasible and effective using a 0.2 Tesla open magnet.
• The technique facilitates minimally invasive interventions such as biopsies and drainage.
• Ongoing developments in MR technology enhance the capabilities of these systems.