alexa The Apparent Diffusion Coefficient in Glial Tumors
ISSN:2167-7964

OMICS Journal of Radiology
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Research Article

The Apparent Diffusion Coefficient in Glial Tumors

Tan FC1*, Gokoglu A2, Tucer B3 and Caner Y1

1Department of Biophysics, Erciyes University, Kayseri, Turkey

2Department of Neurosurgery, Kayseri Education and Research Hospital, Kayseri, Turkey

3Department of Neurosurgery, Acıbadem Hospital, Kayseri, Turkey

*Corresponding Author:
Fazile Canturk Tan
Department of Biophysics
Faculty of Medicine, Erciyes University
Kayseri, Turkey
Tel: +90-505-657 5327
E-mail: [email protected]

Received Date: February 16, 2017; Accepted Date: March 13, 2017; Published Date: March 20, 2017

Citation: Tan FC, Gokoglu A, Tucer B, Caner Y (2017) The Apparent Diffusion Coefficient in Glial Tumors. OMICS J Radiol 6:256. doi: 10.4172/2167-7964.1000256

Copyright: © 2017 Tan FC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Background: Diffusion-Weighted Imaging (DWI) is one of the fast developing techniques in the field of MRI. This method uses the random diffusion motion of water molecule depending on physiological and anatomical characteristics of living organisms. Aim: To calculate the apparent diffusion coefficient and diffusion values in order to determine the degree in the glial tumors. Patients and methods: In the study, cases were selected among those who presented with a diagnosis of intracranial mass to Neurosurgery Department of Erciyes University, Medicine School. Overall, 20 patients were included to the study: 7 patients with Glioblastoma Multiforme (GBM), 4 patients with anaplastic astrocytoma (AA), 4 patients with diffuse astrocytoma, 3 patients with ependymoma and 2 patients with low-grade astrocytoma. The apparent diffusion coefficient (ADC) images were acquired from echo-planar diffusion-weighted images (DWIs). For each tumor, the mean ADC values and the mean diffusion value were measured at a large region of interest (ROI) defined within tumor and at symmetrical normal brain tissue. Statistical analyses were performed by using SPSS 15.0 Statistical Package Program. Results: We calculated mean ADC values (2.91 × 10-3 mm2/s, 0.69 × 10-3 mm2/s, 3.13 × 10-3 mm2/s, 2.41 × 10-3 mm2/s and 0.70 × 10-3 mm2/s) and mean diffusion values (0.11 × 10-3 mm2/s, 1.6 × 10-3 mm2/s, 0.10 × 10-3 mm2/s, 1.58 × 10-3 mm2/s, 0.90 × 10-3 mm2/s) for GBM, AA, diffuse astrocytoma, low degree astrocytoma and ependymoma, respectively. The diffusion value of normal brain was calculated to be 0.85 × 10-3 mm2/s. A P-value <0.05 was considered statistically significant. We estimated a significant difference between GBM and AA (p=0.001). Although there were marked differences among diffuse astrocytomas, low degree astrocytoma and ependymoma, the difference did not reach statistical significance. Conclusion: The mean ADC value, the mean diffusion value and intensity region may provide additional information in determining tumor degree in malignant glial tumors.

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