2010 Volume 59 Issue 7 Pages 429-433
We performed radionuclide cisternography in two patients suspected of having cerebrospinal fluid hypovolemia. One patient was a 31-year old male and the other a 34-year-old female. Radionuclide cisternography demonstrated extrathecal radiotracer accumulation, urinary bladder accumulation in an early phase, and decrease in radiotracer retention in the cerebrospinal space at 24 hours post injection, while brain MRI revealed no abnormal findings. Two patients were diagnosed as cerebrospinal fluid hypovolemia because of three observations mentioned above. Radionuclide cisternography is useful in diagnosing cerebrospinal fluid hypovolemia even if brain MRI shows no abnormal finding.
