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عمومی::
سیسترنوگرافی
Both computed tomographic (CT) cisternography and radionuclide cisternography require lumbar puncture for the
administration of tracer agent, whereas magnetic resonance imaging (MRI) cisternography can be achieved solely through specific imaging protocols.
Radionuclide cisternography has poor sensitivity and poor spatial resolution.
Both CT cisternography and MRI cisternography offer much greater spatial resolution but still require the presence of a relatively large, active leak for reliable detection.
Radioactive iodine (131I) serum albumen, technetium (99mTc)-labeled serum albumen and DTPA, and indium-111 pentetate have all been used for radionuclide cisternography, which involves the intrathecal administration of a radionuclide tracer via a lumbar puncture and subsequent monitoring of the distribution of tracer with a scintillation camera.
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