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Smart stylet: the development and use of a bedside external ventricular drain image-guidance system
Vaibhav Patil1, Rajiv Gupta, Raúl San José Estépar
1Department of Radiology, Brigham and Women's Hospital, Boston, Mass., USA.
Stereotactic and Functional Neurosurgery
|February 10, 2015
Summary
The Smart Stylet, an electromagnetic image-guidance system, significantly improves the accuracy of ventriculostomy catheter placement. This new guidance system enhances physician performance and patient safety during the procedure.
Area of Science:
- Neurosurgery
- Medical Device Technology
- Image Guidance Systems
Background:
- Ventriculostomy catheter placement accuracy varies widely.
- Efficient image-guidance systems are needed to improve physician performance and patient safety.
Purpose of the Study:
- Evaluate the Smart Stylet, a novel electromagnetic image-guidance system.
- Assess its efficacy during bedside ventriculostomy procedures.
Main Methods:
- Assessed the accuracy of the Smart Stylet system.
- Evaluated operator success in targeting the ipsilateral frontal horn using a phantom model.
Main Results:
- Target registration error ranged from 1.3 to 4.6 mm (mean 3.1 mm).
- 100% success rate in catheter placement with Smart Stylet guidance versus 40-60% without.
- Resident operators showed improved success rates with Smart Stylet guidance (50% vs. 0%).
Conclusions:
- The Smart Stylet system shows potential to enhance accuracy in ventriculostomy.
- It may improve the ability to successfully target ventricles during frontal ventriculostomy.
