CT cisternography
Updates to Article Attributes
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was changed:
CT cisternography is an imaging technique to diagnose CSF rhinorrhea or CSF ottorheaotorrhea (CSF leaks), as computed tomography images can allow the assessment of the bones of the base of skull.
Procedure
-
precontrastprecontrast CT is performed with thin slices. - 3-10 mL of an iodinated nonionic low-osmolarcontrast agent is
instilledinstalled into thecal sac after lumbar puncture, - the patient is then tilted with foot end elevation and a CT scan isperformed with thin slices; maneuvers that provoke anactive leak, such as head hanging or sneezing, are performed to visualize intermittent or occult leaks
. - post
contrast-contrast images are then compared with the precontrast image to see where the CSF and the contrastisare leaking out. - radionuclide cisternography is more sensitive but has poor anatomic resolution compared to CT cisternography
.
-<p><strong>CT cisternography</strong> is an imaging technique to diagnose <a href="/articles/csf-rhinorrhea-1" title="CSF rhinorrhea">CSF rhinorrhea</a> or <a href="/articles/csf-ottorhoea-1" title="CSF ottorhoea">CSF ottorhea</a> (CSF leaks)</p><h5>Procedure</h5><ul>-<li> precontrast CT is performed with thin slices.</li>-<li>3-10 mL of an iodinated nonionic low-osmolar-contrast agent is instilled into thecal sac after lumbar puncture,</li>-<li>the patient is then tilted with foot end elevation and a CT scan is- performed with thin slices; maneuvers that provoke an-active leak, such as head hanging or sneezing, are performed to visualize intermittent or occult leaks.</li>-<li>post contrast-images are then compared with the precontrast image to see where the CSF and the contrast is leaking out.</li>-<li>radionuclide cisternography is more sensitive but has poor anatomic resolution compared to CT cisternography.</li>- +<p><strong>CT cisternography</strong> is an imaging technique to diagnose <a href="/articles/csf-rhinorrhoea">CSF rhinorrhea</a> or <a href="/articles/csf-otorrhoea">CSF otorrhea</a> (CSF leaks), as computed tomography images can allow the assessment of the bones of the base of skull. </p><h5>Procedure</h5><ul>
- +<li>precontrast CT is performed with thin slices.</li>
- +<li>3-10 mL of an iodinated nonionic low-osmolar contrast agent is installed into thecal sac after lumbar puncture</li>
- +<li>the patient is then tilted with foot end elevation and a CT scan is performed with thin slices; maneuvers that provoke an active leak, such as head hanging or sneezing, are performed to visualize intermittent or occult leaks</li>
- +<li>post-contrast images are then compared with the precontrast image to see where the CSF and the contrast are leaking out</li>
- +<li>radionuclide cisternography is more sensitive but has poor anatomic resolution compared to CT cisternography</li>
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