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Brain Imaging

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).

Seizures: Classification

Seizures: Classification

Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:

Seizures ll: Types

Seizures ll: Types

Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...

Seizures l: Introduction

Seizures l: Introduction

Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...

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Updated: May 14, 2026

Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings

Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings

Published on: June 6, 2015

[Brain imaging in seizures].

David Grévent¹, Raphaël Calmon, Francis Brunelle

¹Université Paris-Descartes, AP-HP, hôpital Necker-Enfants malades, Inserm U1000, service de radiologie pédiatrique, 75015 Paris, France.

La Revue Du Praticien

|February 22, 2013

Summary

This summary is machine-generated.

Brain imaging, particularly MRI, is crucial for diagnosing non-idiopathic epilepsy in children. CT scans are useful in emergencies, but MRI is essential for detecting subtle abnormalities missed by CT.

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Area of Science:

Pediatric Neurology
Neuroradiology
Epileptology

Background:

Non-idiopathic epilepsy in children requires systematic neuroimaging for accurate diagnosis and management.
Magnetic Resonance Imaging (MRI) is the gold standard for evaluating brain abnormalities in these patients.
Computed Tomography (CT) plays a role in emergency settings and for specific conditions like calcifications.

Purpose of the Study:

To outline the indications and protocols for cerebral imaging in children with non-idiopathic epilepsy.
To emphasize the complementary roles of MRI and CT in the diagnostic workup.
To highlight the importance of MRI in detecting subtle lesions.

Main Methods:

Systematic review of cerebral imaging techniques used in pediatric non-idiopathic epilepsy.
Discussion of Magnetic Resonance Imaging (MRI) protocols, including T1, T2, T2-Flair, T2* sequences, and contrast administration.
Evaluation of the utility of non-enhanced Computed Tomography (NECT) in acute settings and for detecting calcifications.

Main Results:

MRI is the preferred modality for identifying small cortical and subcortical abnormalities in non-idiopathic epilepsy.
NECT is indicated in emergencies due to speed and availability, but often misses subtle findings.
Second-look CT may be necessary for suspected conditions like tuberous sclerosis or fetal infections.

Conclusions:

MRI is indispensable for the comprehensive evaluation of children with non-idiopathic epilepsy, even after a normal CT.
CT has specific indications in emergency situations and for calcification detection.
Tailored MRI protocols, including contrast, are essential for maximizing diagnostic yield in pediatric epilepsy.