Armaghan Fard-Esfahani - Research Institute for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
Mohammad Taghavi - Research Institute for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
Mohammad Eftekhari - Research Institute for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
Mohsen Saghari - Research Institute for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran

Radionuclide shuntography is a safe and simple method to determine shunt patency and analyze changes in CSF (Cerebro-Spinal-Fluid) flow. We present a case of complicated CSF shunt, in which radioisotopic scan correctly identified disconnection of the shunt tubing system localizing the site of extravasation accurately. The findings were confirmed by surgery performed for correction of the shunt system.