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Visualization of the medial forebrain bundle using diffusion tensor imaging.

Ardian Hana1, Anisa Hana2, Georges Dooms3

  • 1National Service of Neurosurgery, Centre Hospitalier de Luxembourg Luxembourg City, Luxembourg.

Frontiers in Neuroanatomy
|November 20, 2015
PubMed
Summary
This summary is machine-generated.

Diffusion tensor imaging successfully visualized the medial forebrain bundle (MFB) in most patients, aiding neurosurgical planning. This technique is valuable for interventions, especially deep brain stimulation, emphasizing MFB preservation.

Keywords:
cerebral lesionsdeep brain stimulationdiffusion tensor imagingmedial forebrain bundleneurosurgerywhite matter tracts

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Area of Science:

  • Neuroimaging
  • Neuroscience
  • Neurosurgery

Background:

  • Diffusion tensor imaging (DTI) allows in vivo visualization of white matter tracts.
  • The medial forebrain bundle (MFB) is a critical white matter pathway involved in reward circuitry.
  • Accurate depiction of the MFB is essential for neurosurgical interventions.

Purpose of the Study:

  • To assess the feasibility of using DTI to visualize the medial forebrain bundle (MFB) in patients.
  • To evaluate the MFB's portrayal in patients undergoing neurosurgical evaluation or treatment.
  • To determine the clinical utility of MFB visualization in neurosurgery.

Main Methods:

  • DTI sequences were acquired on a 3-Tesla MRI scanner.
  • Specific parameters included axial acquisition, 32 gradient directions, b-value of 800 s/mm(2), and Echo-Planar-Imaging (EPI).
  • 3DT1-sequences were used for navigation, with slice thickness of 2 mm and voxel size of 2x2x2 mm.

Main Results:

  • The MFB was visualized bilaterally in 12 out of 15 patients.
  • In three patients with frontal lobe lesions (meningiomas, metastasis), the MFB was depicted unilaterally on the contralateral side.
  • MFB visualization was achieved with an additional scanning time of less than 9 minutes.

Conclusions:

  • DTI enables routine visualization of the MFB for neurosurgical interventions.
  • The MFB's role in reward circuitry makes its preservation crucial during deep brain stimulation, particularly for psychiatric disorders.
  • Neurosurgeons should consider MFB preservation in surgical planning for relevant brain regions.