Table 1:

Contrast-enhanced MR imaging findings of patients who underwent imaging within 7 days of an image-guided LPa

Subdural CollectionsDural EnhancementBrain SagVenous Distension
All patients5.2% (8/153)3.9% (6/153)0.6% (1/159)1.3% (2/158)
MR imaging <2 days of LP2.5% (2/80)0% (0/85)0% (0/85)2.4% (2/83)
Large-volume LP (>30 mL)0% (0/6)0% (0/6)0% (0/6)0% (0/6)

  • ↵a Imaging findings present on pre-LP imaging were not included in this analysis.