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A new method for characterization of low grade gliomas using ultra low field magnetic resonance imaging |
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| Authors: | Lars-Oloe Wahlund Jrgen Boethius Eva Kindstrand Olle Marions Jan Sf Lennart Wetterberg |
| Institution: | a Karolinska Institute, MR unit, Department of Psychiatry, St Göran's Hospital, Stockholm, Sweden * Department of Neurosurgery, Karolinska Hospital, Stockholm, Sweden † Department of Neurology, Södersjukhuset, Stockholm, Sweden ‡ Deparment of Radiology, Södersjukhuset, Stockholm, Sweden |
| Abstract: | Low grade gliomas were studied with ultra low field magnetic resonance imaging (ULF MRI). The tumors exhibited high tissue contrast in both T1 and T2-weighted images as compared to normal brain tissue. Moreover they were sharply delineated towards the surrounding brain tissue. When compared with X-ray computed tomography the tumors were more readily detected and delineated by using ultra-low field magnetic imaging. A computerassisted classification procedure was used to define new regions of interest for relaxation time estimation. By using this procedure more accurate estimations of the T1 and T2 values were obtained. |
| Keywords: | Magnetic resonance imaging Ultra-low field Glioma Tissue characterization Computer-assisted classification |
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