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Updated: Oct 31, 2025
Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
A comparative diffusion tensor imaging study of patients with and without treatment-resistant schizophrenia
Anisha Aggarwal1, Sandeep Grover1, Chirag Ahuja2
1Department of Psychiatry, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Aim:
The aim was to study the brain connectivity using diffusion tensor imaging (DTI) among patients with treatment-resistant schizophrenia (TRS) and compare the same with a group of patients without TRS.
Methods:
Twenty-three patients with TRS and 15 patients without TRS underwent DTI using a 3T magnetic resonance imaging machine. DTI data were processed with the calculation of fractional anisotropy (FA) and apparent diffusion coefficient. Patients were also assessed on Brief Psychiatric Rating Scale, Positive and Negative Symptom Scale, Global Assessment of Functioning Scale, and Clinical Global Impression severity scale.
Results:
Patients with TRS and non-TRS differed significantly in the FA values in the region of right superior longitudinal fasciculus and right uncinate fasciculus, with more integrity of tracts in the non-TRS group. However, these differences disappeared when Bonferroni correction was used for multiple comparisons.
Conclusion:
The present study suggests lack of significant difference in DTI findings between patients with TRS and non-TRS.
