Cerebral tractography is an advanced medical imaging technique that uses magnetic resonance imaging (MRI) to study the white matter tracts of the brain. These tracts are nerve fibers that connect different areas of the brain, allowing communication between them. Tractography allows for the visualization and mapping of these connections, which is fundamental for the diagnosis and planning of neurological treatments.
What is this test for?
Cerebral tractography is mainly used for:
Neurological diagnosis: To identify alterations in the white matter tracts related to diseases such as brain tumors, strokes, epilepsy, multiple sclerosis, among others.
Surgical planning: It helps neurosurgeons to locate and preserve critical nerve pathways during complex surgical procedures, such as the resection of brain tumors.
Clinical research: It is used to study developmental disorders, neurodegenerative diseases, and other conditions that affect brain connectivity.
Evaluation of traumatic injuries: It is used to analyze the impact of traumatic brain injuries on brain connections.
Benefits of the high technology of cerebral tractography
Tractography uses images obtained through Diffusion Tensor Imaging (DTI). This technique measures the movement of water molecules within the brain, which allows for the identification of the orientation and integrity of the white matter tracts. The data is processed using specialized software to generate detailed three-dimensional maps of the brain connections.
What is the procedure like?
The cerebral tractography procedure involves:
Preparation:
Before the exam, your doctor will evaluate if you are a suitable candidate for cerebral tractography. In most cases, fasting is not necessary, but it is best to confirm with your specialist.
On the day of the study, wear comfortable clothing and avoid any clothing or accessories with metal. Also, if you have a pacemaker, metal implants, or other medical devices, be sure to inform the team before the procedure.
During the test:
You will lie on the gurney of the magnetic resonance imaging (MRI) scanner, and the team will adjust your position for the study. Then, images will be taken using special Diffusion Tensor Imaging (DTI) MRI sequences. It is essential that you remain still to ensure the best image quality. The procedure usually lasts between 30 and 60 minutes.
After the test:
After the procedure, you can resume your usual activities, unless your doctor indicates otherwise.
A specialized radiologist will analyze the tractography results and send them to your doctor, who will explain the findings and, if necessary, recommend the most appropriate treatment.
Recommendations for the test
During the procedure, try to remain as still as possible to ensure the quality of the images. Also, follow all of your doctor’s instructions before, during, and after the study to get the best results.
Are there any risks?
Cerebral tractography is a safe and non-invasive procedure. It does not use ionizing radiation or require the administration of contrast in most cases. However, there are some minimal considerations:
Claustrophobia: Some people may experience anxiety while inside the MRI scanner. Inform the staff if this happens to you, as they can take measures to help you feel more comfortable.
Interference with metal devices: MRI uses magnetic fields, so it is important to inform the medical team if you have metal implants or electronic devices.
To ensure your test goes smoothly, we ask that you arrive before the scheduled time. This will allow us to complete the necessary administrative and clinical preparation.
Before the test, we will give you the Informed Consent, a document with important information that you must read and sign.
If your appointment is for a Magnetic Resonance Imaging (MRI), it is crucial that you inform us about the presence of pacemakers, metal objects, prostheses (including dental ones), tattoos, or medication infusion devices, such as insulin pumps.
These diagnostic tests are very safe, but as with any medical procedure, there is a minimal possibility of an incident.
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