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Updated: May 20, 2026
Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
Published on: October 14, 2022
Image-guided cerebrospinal fluid shunting in children: catheter accuracy and shunt survival
Michael R Levitt1, Brent R O'Neill, Gisele E Ishak
1Seattle Children's Hospital, Department of Neurological Surgery, 4800 Sand Point Way NE, Seattle, Washington 98105, USA.
Insights
Image guidance improved cerebrospinal fluid shunt catheter accuracy in children, even with smaller ventricles. Shunt survival rates were similar between image-guided and standard techniques, indicating accuracy does not directly impact survival.
Area of Science:
- Neurosurgery
- Pediatric Surgery
- Medical Imaging
Background:
- Cerebrospinal fluid (CSF) shunt placement in children has a high failure rate, particularly in those with small ventricles.
- Frameless stereotactic electromagnetic image guidance offers potential for improved ventricular catheter placement.
Purpose of the Study:
- To evaluate the impact of image guidance on catheter accuracy and shunt survival in pediatric patients undergoing CSF shunt placement.
- To compare outcomes between image-guided and standard anatomical landmark techniques.
Main Methods:
- Retrospective evaluation of pediatric patients undergoing frontal ventricular CSF shunt placement or revision.
- Catheter placement using either anatomical landmarks or image guidance.
- Quantification of preoperative ventricular size and postoperative catheter accuracy.
Main Results:
- Image guidance significantly improved catheter tip accuracy (p < 0.01) despite smaller average ventricular size in the image-guided group.
- No significant difference in shunt failure rates between standard (22%) and image-guided (25%) techniques (p = 0.21).
- Smaller ventricular size did not independently affect shunt failure rate.
Conclusions:
- Image guidance enhances catheter placement accuracy in pediatric CSF shunts, especially in challenging cases with small ventricles.
- Shunt insertion technique did not significantly influence shunt survival rates.
- Observed selection bias for image guidance in higher-risk placements resulted in comparable failure rates to initial surgeries.
Object:
Cerebrospinal fluid shunt placement has a high failure rate, especially in patients with small ventricles. Frameless stereotactic electromagnetic image guidance can assist ventricular catheter placement. The authors studied the effects of image guidance on catheter accuracy and shunt survival in children.
Methods:
Pediatric patients who underwent placement or revision of a frontal ventricular CSF shunt were retrospectively evaluated. Catheters were placed using either anatomical landmarks or image guidance. Preoperative ventricular size and postoperative catheter accuracy were quantified. Outcomes of standard and image-guided groups were compared.
Results:
Eighty-nine patients underwent 102 shunt surgeries (58 initial, 44 revision). Image guidance was used in the placement of 56 shunts and the standard technique in 46. Shunt failure rates were not significantly different between the standard (22%) and image-guided (25%) techniques (p = 0.21, log-rank test). Ventricular size was significantly smaller in patients in the image-guided group (p < 0.02, Student t-test) and in the surgery revision group (p < 0.01). Small ventricular size did not affect shunt failure rate, even when controlling for shunt insertion technique. Despite smaller average ventricular size, the accuracy of catheter placement was significantly improved with image guidance (p < 0.01). Shunt accuracy did not affect shunt survival.
Conclusions:
The use of image guidance improved catheter tip accuracy compared with a standard technique, despite smaller ventricular size. Failure rates were not dependent on shunt insertion technique, but an observed selection bias toward using image guidance for more at-risk catheter placements showed failure rates similar to initial surgeries.