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Permanent shunt diversion of cerebrospinal fluid away from the central nervous system is a widely recognized neurosurgical procedure. Still, patients with ventricular shunts are at substantial risk of shunt dysfunction, which includes complications like mechanical shunt failure, abnormal shunt drainage and infection. Early detection of shunt dysfunction is essential to proper and timely treatment, and acute shunt dysfunction might require immediate intervention. This review summarizes current and potential strategies for investigation of shunt dysfunction.