PET is a nuclear medicine technology, which is one of the most important technologies in epilepsy diagnosis. “In vivo biochemical imaging”, reflecting “molecular imaging”.
2. Let’s make an analogy between PET and weather clouds, and we will know more about the role of PET.
Anatomical image
Functional images
Functional + structural fusion imaging (PET-MRI)
From the comparison of the above images, it is easy to see that PET/MRI fusion image takes into account the advantages of PET molecular metabolic function imaging and MRI anatomical structure imaging, i.e. 1+1>2, so it has a unique use in epilepsy diagnosis, especially for the localization of epileptogenic foci, which has greater value and advantage.
3. Clinical application of PET-MRI
1) Localization of epileptogenic foci: With the in-depth research, epilepsy experts and scholars found that epilepsy is an abnormal brain network system, so how to block this abnormal brain network system becomes the key to epilepsy control. PET-MRI provides a convenient and fast way to diagnose epilepsy and is one of the most effective diagnostic techniques for preoperative noninvasive evaluation of epileptic patients.
2) PET-MRI is also valuable in the early diagnosis and treatment of Parkinson’s disease, Alzheimer’s disease, assessment of brain metabolic status after brain injury, assessment of drug addiction and drug treatment.
3) PET-MRI has incomparable advantages in whole body tumor screening, especially in the localization of metastases.
4.PET/MRI indications
1)Localization of epileptic lesions.
2)Early diagnosis of systemic tumors, clinical staging, recurrence, judgment of treatment efficacy and prognosis, puncture localization and formulation of biological target areas for tumor radiotherapy.
3) early, accurate and rapid diagnosis of tumors in high-end health check-ups.
4) Diagnosis and condition assessment of Alzheimer’s disease, diagnosis and differential diagnosis of Parkinson’s disease.
5. Precautions before PET/MRI examination
1) Fast for 4-6 hours before the examination (do not eat breakfast if you have a morning examination appointment and do not eat lunch if you have an afternoon examination appointment). Empty urine before the examination. When urinating, please avoid contaminating the body surface and clothing with urine.
2) Bring your previous examination data (including medical records, CT, MRI, pathology, etc.).
3) prohibit strenuous exercise 2 hours before the examination and require complete rest for 30 to 60 minutes before imaging.
4) Patients are required to have a high-protein, low-sugar diet before fasting, and may consume meat, seafood and eggs, and cannot drink sugary drinks.