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MR-guided procedures using contemporaneous imaging frameless stereotaxis in an open-configuration system
M H Lee1, R B Lufkin, A Borges
1Department of Radiological Sciences, UCLA School of Medicine, Los Angeles, CA 90095-1721, USA.
Journal of Computer Assisted Tomography
|December 8, 1998
Summary
New open-design MRI magnets enable frameless stereotaxis for minimally invasive procedures. This technique allows accurate instrument placement for biopsy and treatment using real-time imaging guidance.
Area of Science:
- Medical Imaging
- Neurosurgery
- Interventional Radiology
Background:
- Conventional closed MRI systems present technical challenges for frameless stereotactic procedures.
- Advancements in open-design MRI magnets with in-room monitoring offer new possibilities.
Purpose of the Study:
- To evaluate the clinical feasibility and success of frameless MR-guided procedures using an open-design magnet.
- To assess the accuracy and safety of this technique for various interventions.
Main Methods:
- Utilized an open-design 0.2 T MRI magnet (Siemens OPEN) with an in-room monitor.
- Performed 33 frameless MR-guided procedures, including aspiration cytology, biopsy, and treatment, in diverse anatomical locations.
- Success was defined by accurate instrument placement within the target region.
Main Results:
- Successfully completed 28 biopsy and 5 treatment procedures.
- Achieved accurate instrument placement in all cases, enabling completion of the intended procedure.
- The open-design magnet facilitated direct physician access and real-time imaging feedback.
Conclusions:
- Frameless MR-guided procedures are feasible and effective using open-design magnets with in-room image monitoring.
- This technique offers a promising approach for guiding invasive procedures with enhanced precision and accessibility.
- Further development of this technology holds potential for expanding interventional capabilities.