CT Cisternography is a specialized type of CT scan that is used to assess the flow and potential leaks of cerebrospinal fluid (CSF). The approach for the examination is a combination of computed tomography (CT) imaging and contrast that is injected into the CSF spaces to locate and determine the pathway of an abnormal leak.Molecular Diagnostics and Therapy uses state-of-the-art CT imaging technology and then supervises the process accordingly. High-resolution images assess suspected CSF leakage and aid additional management or surgical preparation if necessary.
About CT Cisternography
The brain and spinal cord are surrounded and protected by cerebrospinal fluid. The base of the skull or the spinal cord has a defect that causes CSF to leak. It is important to find out exactly where the leakage is occurring for diagnosis and treatment planning. CT Cisternography generates cross-sectional images of the relevant anatomical structures in detail and is used to show that contrast is able to pass through an abnormal opening or leak.
What is CT Cisternography?
CT Cisternography involves the injection of a contrast material into the CSF via a lumbar puncture (under proper medical supervision). CT scans are used to assess the distribution of contrast and the location of a potential CSF leak. This process involves positioning of the patient and imaging at the correct phases depending on the suspected location. This method differs depending on the indication and whether the suspected leaking site is at the base of the skull, nose, ear area, or back of neck/over spine.
Common Reasons for CT Cisternography
Evaluation of suspected cerebrospinal fluid leakage
Investigation of persistent clear nasal or ear discharge when CSF leakage is suspected
Assessment following head or spinal trauma
Evaluation of suspected postoperative CSF leaks
Investigation of suspected skull-base defects
Assessment of CSF leakage associated with certain structural abnormalities
Preoperative localisation of a confirmed or suspected CSF leak
Conditions Evaluated
CSF Rhinorrhea
CT Cisternography may help identify a CSF leak that presents as persistent clear fluid drainage from the nose.
CSF Otorrhea
The examination may be used when a CSF leak is suspected to involve the ear or temporal bone region.
Skull-Base Defects
Detailed CT imaging can help evaluate structural defects that may provide a pathway for CSF leakage.
Post-Traumatic CSF Leak
The procedure may assist in locating leakage following selected head or spinal injuries.
Postoperative CSF Leak
CT Cisternography can be considered when a persistent CSF leak is suspected after neurosurgical or other relevant procedures.
Who Should Consider This Procedure?
Your doctor may recommend CT Cisternography if you:
Have symptoms suggesting a CSF leak
Experience persistent clear fluid drainage from the nose or ear
Have a suspected skull-base defect
Have a history of trauma involving the head or spine
Develop symptoms suggestive of CSF leakage after surgery
Require precise localisation of a suspected leak for treatment planning
Benefits of CT Cisternography
Provides detailed cross-sectional imaging of relevant structures
Can assist in localising suspected CSF leaks
Helps evaluate skull-base and related anatomical abnormalities
Supports diagnosis and treatment planning
May provide useful information when conventional imaging does not clearly identify the leak
Can help surgeons plan targeted management when a leak site is identified
Important Preparation and Safety Instructions
Follow all fasting instructions provided by the medical team.
Inform the doctor about all medicines and supplements you are taking.
Tell the medical team about any blood-thinning medicines or bleeding disorders.
Inform the team about previous reactions to contrast material or medications.
Provide information about previous neurological procedures, surgeries, or imaging studies.
Inform the medical team about pregnancy or possible pregnancy.
Bring previous CT, MRI, or other relevant reports.
Follow all instructions regarding observation and post-procedure care.
Remain still and follow positioning instructions during imaging.
Report any unusual symptoms or discomfort to the medical team immediately.
Why Choose Molecular Diagnostics and Therapy?
Experienced Radiology Professionals
Advanced CT imaging technology
Appropriate image acquisition and reconstruction protocols
Careful procedural and patient-safety measures
Accurate and reliable reporting
NABL & NABH Accredited Diagnostic Centre
Patient-focused diagnostic services
Comprehensive Nuclear Medicine, Radiology, and Pathology services under one roof
Book Your CT Cisternography
If a doctor suspects a cerebrospinal fluid leak, CT Cisternography provides detailed imaging to help evaluate and localise the suspected leakage. Molecular Diagnostics and Therapy provides specialised CT imaging with appropriate professional supervision and safety protocols
Test information: Usually 4–6 hours of fasting is required before the procedure
Reporting: Within 24 hours*
Follow all fasting instructions provided by the doctor or radiology team before the procedure.
Inform the medical team about all current medicines, supplements, and ongoing treatments.
Tell the doctor if you take blood-thinning medicines or have any bleeding or clotting disorder.
Inform the team about any known allergy or previous reaction to contrast media, local anaesthetic, or other medicines.
Inform the medical team if you have kidney disease or any other significant medical condition.
Inform the doctor if you are pregnant, planning pregnancy, or there is a possibility of pregnancy.
Provide information about any previous neurological procedure, spinal surgery, head injury, or other relevant medical history.
Bring previous CT, MRI, neurological, surgical, or other relevant reports for review.
Follow any instructions regarding blood tests or other pre-procedure investigations when advised.
Wear comfortable clothing and remove jewellery or other metal objects as instructed.
Follow the medical team’s instructions regarding positioning and remaining still during imaging.
Arrange transportation or assistance after the procedure if recommended, particularly when advised to rest or remain under observation.
Follow all post-procedure instructions regarding activity, hydration, observation, and medications.
Report headache, nausea, dizziness, unusual pain, or any other unexpected symptoms to the medical team immediately.
प्रक्रिया से पहले डॉक्टर या रेडियोलॉजी टीम द्वारा दिए गए सभी खाली पेट रहने संबंधी निर्देशों का पालन करें।
वर्तमान में ली जा रही सभी दवाओं, पोषक पूरकों और चल रहे उपचार की जानकारी चिकित्सा टीम को दें।
यदि आप रक्त को पतला करने वाली दवाएं लेते हैं या आपको रक्तस्राव अथवा रक्त के थक्के बनने से संबंधित कोई बीमारी है, तो डॉक्टर को बताएं।
किसी भी ज्ञात एलर्जी या कंट्रास्ट माध्यम, स्थानीय संवेदनाहारी दवा या अन्य दवाओं से पहले हुई प्रतिक्रिया की जानकारी दें।
यदि आपको गुर्दे की बीमारी या कोई अन्य महत्वपूर्ण चिकित्सकीय समस्या है, तो चिकित्सा टीम को इसकी जानकारी दें।
यदि आप गर्भवती हैं, गर्भधारण की योजना बना रही हैं या गर्भधारण की संभावना है, तो डॉक्टर को बताएं।
यदि पहले कोई न्यूरोलॉजिकल प्रक्रिया, रीढ़ की सर्जरी, सिर में चोट या अन्य संबंधित चिकित्सकीय समस्या हुई है, तो इसकी जानकारी दें।
पिछली सीटी स्कैन, एमआरआई, न्यूरोलॉजी, सर्जरी या अन्य संबंधित जांच रिपोर्ट साथ लाएं।
यदि डॉक्टर ने प्रक्रिया से पहले रक्त जांच या अन्य जांच कराने को कहा है, तो उन्हें निर्धारित समय पर पूरा करें।
आरामदायक कपड़े पहनें और चिकित्सा टीम के निर्देशानुसार आभूषण या अन्य धातु की वस्तुएं हटा दें।
इमेजिंग के दौरान शरीर को स्थिर रखने और सही स्थिति में रहने के लिए चिकित्सा टीम के निर्देशों का पालन करें।
यदि प्रक्रिया के बाद आराम या निगरानी की आवश्यकता बताई गई हो, तो घर लौटने के लिए किसी साथ आने वाले व्यक्ति की व्यवस्था करें।
प्रक्रिया के बाद शारीरिक गतिविधि, पर्याप्त पानी पीने, निगरानी और दवाओं से संबंधित सभी निर्देशों का पालन करें।
सिरदर्द, मतली, चक्कर, असामान्य दर्द या कोई अन्य असामान्य लक्षण महसूस होने पर तुरंत चिकित्सा टीम को बताएं।
The patient’s medical history, symptoms, previous imaging, neurological history, medicines, allergies, and reason for the examination are reviewed before the procedure.
The patient is positioned appropriately according to the suspected location of the CSF leak.
A lumbar puncture is performed by a qualified healthcare professional under appropriate sterile precautions and medical supervision.
A suitable contrast medium is introduced into the cerebrospinal fluid space according to the examination protocol.
The patient may be repositioned as required to facilitate distribution of the contrast toward the suspected area of leakage.
CT images are obtained at appropriate stages to evaluate the distribution of contrast within the CSF spaces.
High-resolution cross-sectional images are used to assess the skull base, nasal region, temporal bone, spinal structures, or other relevant anatomical areas depending on the suspected leak site.
The examination may demonstrate contrast passing through an abnormal opening or pathway associated with a CSF leak.
Additional or delayed images may be obtained when required to improve localisation of the suspected leakage.
The findings are reviewed by the radiologist and correlated with symptoms, previous imaging, trauma or surgical history, and other relevant clinical information.
The patient may remain under observation after the procedure according to the clinical protocol and medical team’s assessment.
Appropriate sterile, radiation-safety, contrast-administration, and post-procedure monitoring protocols are followed throughout the examination.
* For details, please see service-related policies
Disclaimer: The information provided on this page is for educational and informational purposes only.
It is not intended to replace professional medical advice, diagnosis, or treatment.
Always consult a qualified healthcare professional for advice regarding your individual health condition or treatment.