How is a cisternogram performed?
This is done by inserting a thin needle in your lower back into the subarachnoid space filled with the radiopharmaceutical tracer.
The tracer travels with the flow of the CSF.
Two to six hours later, you will be scanned.
Many pictures are taken during the scan to show how the tracer flows with the CSF..
What contrast is used in CT cisternography?
Computed tomography (CT) cisternography is a minimally-invasive imaging technique used to visualize the intracranial CSF cisterns using iodinated contrast medium injected into the subarachnoid space.Oct 28, 2023.
What is metrizamide computed tomographic cisternography?
Metrizamide cisternography with CT scanning is a valuable technique in the evaluation of CSF rhinorrhea.
It may only be used when an active leak is present.
The patient described in this report lost several drops of CSF from the nose per minute in the face-down position..
What is the difference between CT and MR cisternography?
Unlike CT cisternography, MR cisternography does not demand an active CSF leak to demonstrate the site of leak.
Inactive leaks are often under-diagnosed on CT cisternography, but CT imaging is still superior in assessment of osseous anatomy [4]..
What is the investigation of choice for CSF rhinorrhea?
High-resolution CT scanning is the imaging modality of choice for identifying a skull base defect associated with CSF rhinorrhea.
CT scans may demonstrate skull base defects resulting from accidental or iatrogenic trauma, an underlying anatomic or developmental abnormality, or an erosive lesion such as a neoplasm..
What is the MR cisternography protocol?
The MR cisternography technique is a new examination method with a higher sensitivity for the detection of CSF fistulae than CT cisternography.
The CISS technique is superior compared with PSIF and should be used in patients with high-flow CSF fistulas..
What is the purpose of computed tomography CT cisternography?
Computed tomography (CT) cisternography is widely used in the diagnostic workup of such patients.
It helps to localize the site of leak and to establish the underlying cause..
What is the technique of cisternography in MRI?
METHODS: MR cisternography is a heavily T2-weighted fast spin-echo technique with high spatial resolution; it uses fat suppression and video reversal of the images..
- Computed tomography (CT) cisternography is widely used in the diagnostic workup of such patients.
It helps to localize the site of leak and to establish the underlying cause. - High-resolution CT scanning is the imaging modality of choice for identifying a skull base defect associated with CSF rhinorrhea.
CT scans may demonstrate skull base defects resulting from accidental or iatrogenic trauma, an underlying anatomic or developmental abnormality, or an erosive lesion such as a neoplasm. - If your cisternogram is normal, it means CSF is flowing around your brain and spinal cord normally.
There are no leaks or blockages.
Abnormal results could indicate: CSF leak, which is often the result of a traumatic brain injury, skull fractures or damage to the dura mater (outermost covering of the spinal cord). - The test is performed to detect problems with the flow of spinal fluid and spinal fluid leaks.
In some cases, there may be a concern the cerebrospinal fluid (CSF) fluid is leaking after a trauma to the head or a surgery in the head.
This test will be done to diagnose the leak.
