ABSTRACT
Introduction: Ventricular enlargement is a characteristic physical change that is present frequently in a numberof cerebral disorders encountered in neurologic and psychiatric practice. Quantitative assessment of neuroimagesfor ventricular size is an effective approach to reveal structural changes in conditions such as Alzheimer’sDisease, schizophrenia, Huntington’s disease, hydrocephalus and many other neurological and psychiatricdisorders.Aim: The present study is being done with the aim to establish normal ventricular indices of brain in both sexesand to find the correlation between these indices in different age groups in Indian population.Materials and Methods: The data for the present study are 300 CT scan which are collected from department ofRadiology, Ramaiah hospitals. The following indices such as Evans index, bifrontal index, bicaudate index, cellamedia index, third ventricular index , Huckman’s index and ventricular index were calculated. The parameterswere tabulated and statistically analyzed.Results: The ventricular indices showed statistically significant difference between males and females in all theindices except for cella media index. There was positive correlation coefficient between age and indices whichwas statistically significant.Conclusion: The knowledge of normal anatomy of ventricular system of brain helpful for clinicians, neurosurgeonsand radiologists in day to day clinical practice
ABSTRACT
OBJECTIVE: A 10-year retrospective lumboperitoneal(LP) shunt surgery was reviewed in order to verify the several prognostic factors including the etiology, the findings of brain computed tomography(CT) and/or magnetic resonance imaging(MRI), and the effect of lumbar drainage which have been implicated in the result of LP shunt. PATIENTS AND MEHTODS: A series of 32 patients who underwent LP shunt surgery between March 1988 and May 1998 for the management of communicating hydrocephalus was reviewed. RESULTS: The etiology of communicating hydrocephalus was subarachnoid hemorrhage(SAH) in 19 cases(59.4%), head trauma in 10 cases(31.2%), intracerebral hemorrhage in 2 cases(6.3%), meningitis in 1 case(3.1%), tumor in 1 case(3.1%), and idiopathic in 2 cases(6.3%). The mean follow-up period was 1.2 years(range, 2 week to 8.5 year). Among them, twenty four patients(75%) were clinically improved after shunt operation. The result of LP shunt was not related to the etiologies and many findings of brain CT/MRI such as ventricular index, Evan's index, periventricular low density, obliteration of cerebral sulci and cortical atrophy. However, the result of LP shunt was significantly related to the effect of preoperative lumbar drainage(p=0.0184). CONCLUSION: This result suggests that the effect of preoperative lumbar drainage has a significant role in predicting the result of LP shunt in patients with communicating hydrocephalus.