Evaluation of intracranial vasculitis in tuberculous meningitis using magnetic resonance vessel wall imaging

Harshad Arvind Vanjare1, Karthik Gunasekaran2, Abi Manesh3

  • 1Department of Radiology, Christian Medical College and Hospital, Vellore, Tamil Nadu, India.

Abstract

Insights

Intracranial vasculitis is common in tuberculous meningitis (TBM). Magnetic resonance vessel wall imaging can assess infarct risk and guide treatment to prevent complications in TBM patients.

Area of Science:

  • Neurology
  • Infectious Diseases
  • Radiology

Background:

  • Tuberculous meningitis (TBM) is a significant global health concern.
  • Vasculitis-induced infarcts are a major complication of TBM, leading to poor outcomes.
  • Assessing intracranial vasculitis is crucial for managing TBM.

Purpose of the Study:

  • To evaluate the prevalence and characteristics of intracranial vasculitis in TBM patients.
  • To assess vasculitis at initial diagnosis and during follow-up under antituberculous therapy.
  • To explore the relationship between vasculitis, infarcts, and treatment in TBM.

Main Methods:

  • Employed magnetic resonance (MR)-based vessel wall imaging (VWI).
  • Studied ten TBM patients (five at initial diagnosis, five during follow-up).
  • Assessed intracranial vessels for signs of vasculitis.

Main Results:

  • Intracranial vasculitis detected in 60% of TBM patients.
  • An average of 70% of intracranial vessels were affected by vasculitis.
  • Infarcts (acute and chronic) were observed in several patients; vasculitis persisted even after therapy initiation, explaining late-onset infarcts.

Conclusions:

  • Intracranial vasculitis is a frequent finding in TBM.
  • MR-based VWI is a valuable tool for assessing infarct risk in TBM.
  • VWI can aid in guiding treatment strategies for infarct prevention in TBM.