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Radionuclide cisternography: normal values for nasal secretion of intrathecally injected 111In-DTPA
Journal of Nuclear Medicine
Radioactive tracers are frequently used in the detection and localization of CSF leaks in pa tients with rhinorrhea. However, little data are available concerning normal levels of nasal se cretion of intrathecally injected â€oe11n-DTPA. We propose a technique which compares the ac tivity in nasal pledgets to plasma activity in 16 patients without any known abnormalities. The ratio of pledget activity to plasma activity per 0.5 ml did not exceed 1 .3. In a proven case of occult CSF rhinorrheapmid:4753456 fatcat:72dqvfxqufhe7izz5t6dn2ycfu