Diffusion tensor imaging – Arcuate fasciculus and the importance for the neurosurgeon
| Autor: | Frank Hertel, Hans Boecher-Schwarz, Ardian Hana, Georges Dooms |
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| Rok vydání: | 2015 |
| Předmět: |
Male
medicine.medical_specialty Eloquent Brain Areas Pyramidal Tracts computer.software_genre Neurosurgical Procedures White matter Risk Factors Voxel Aphasia Humans Medicine Arcuate fasciculus Visual Pathways Brain Neoplasms business.industry Arcuate Nucleus of Hypothalamus General Medicine Middle Aged medicine.disease Diffusion Tensor Imaging Neurosurgeons Treatment Outcome medicine.anatomical_structure Corticospinal tract Female Surgery Neurology (clinical) Neurosurgery Radiology Hypothalamic Neoplasms business computer Diffusion MRI Glioblastoma |
| Zdroj: | Clinical Neurology and Neurosurgery. 132:61-67 |
| ISSN: | 0303-8467 |
| Popis: | Objective Tumors in eloquent areas of the brain like Broca or Wernicke might have disastrous consequences for patients. We intended to visualize the arcuate fasciculus (AF) and to demonstrate his relation with the corticospinal tract and the visual pathway using diffusion tensor imaging (DTI). Methods We depicted between 2012 and 2014 the AF in 71 patients. Men and women of all ages were included. Eleven patients had postoperative controls also. We used a 3DT1-sequence for the navigation. Furthermore T2- and DTI-sequences were performed. The FOV was 200 × 200 mm2, slice thickness 2 mm, and an acquisition matrix of 96 × 96 yielding nearly isotropic voxels of 2 × 2 × 2 mm. 3-Tesla-MRI was carried out strictly axial using 32 gradient directions and one b0-image. We used Echo-Planar-Imaging (EPI) and ASSET parallel imaging with an acceleration factor of 2. b-Value was 800 s/mm2. Additional scanning time was less than 9 min. Results AF was portrayed in 63 patients bilaterally. In one glioblastoma patient it was impossible to visualize the left AF and in seven other patients we could not portray the right one. The lesions affected AF by disrupting or displacing the fibers. Conclusions DTI might be a useful tool to portray AF. It is time-saving and can be used to preserve morbidity in patients with lesions in eloquent brain areas. It might give deeper insights of the white matter and the reorganization of AF-fibers postoperatively. |
| Databáze: | OpenAIRE |
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