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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Network Analysis of the Default Mode Network Using Functional Connectivity MRI in Temporal Lobe Epilepsy
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Connectivity changes after laser ablation: Resting-state fMRI.

Varina L Boerwinkle1, Aditya Vedantam2, Sandi Lam2

  • 1Department of Pediatric Neurology, Phoenix Children's Hospital, Barrow Neurological Institute, 1919 E. Thomas Rd, Ambulatory Bld 3, Phoenix, AZ, USA.

Epilepsy Research
|October 17, 2017
PubMed
Summary
This summary is machine-generated.

Resting-state functional MRI (rsfMRI) shows promise for evaluating epilepsy patients post-laser ablation. This technique can identify connectivity changes, pinpoint new seizure foci, and guide treatment, offering a noninvasive biomarker.

Keywords:
Brain mappingFunctional connectivityIndependent component analysisPediatric epilepsy surgeryResting-state functional MRIStereotactic laser ablation

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Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Resting-state functional MRI (rsfMRI) is a valuable tool for assessing epilepsy patients, especially pediatric cases unable to perform task-based fMRI.
  • Limited data exists on the role of postoperative rsfMRI following epilepsy surgery, particularly after laser ablation procedures.

Observation:

  • This review focuses on the utility of postoperative rsfMRI after laser ablation of seizure foci.
  • Standardized anesthesia protocols and imaging parameters enable serial rsfMRI follow-up.
  • In-house software facilitates merging rsfMRI images with surgical navigation systems.

Findings:

  • Postoperative rsfMRI has the potential to detect alterations in brain connectivity.
  • It can aid in localizing new seizure foci and informing antiepileptic drug therapy.
  • rsfMRI serves as a noninvasive biomarker for functional connectivity.

Implications:

  • rsfMRI complements conventional MRI and task-based fMRI in evaluating seizure recurrence post-laser ablation.
  • This technique offers a promising noninvasive method for monitoring functional changes and guiding treatment in epilepsy management.