Fig. 1From: Investigation of anterior cingulate cortex gamma-aminobutyric acid and glutamate-glutamine levels in obsessive-compulsive disorder using magnetic resonance spectroscopyPosition of MRS region of interest. A region of interest (ROI) with a size of 30 × 30 × 30 mm3 was created over the anterior cingulate cortex according to a high-resolution anatomic 3D T1WI MRI scan. The ROI is shown in (a) sagittal, (b) coronal, and (c) transversal orientationsBack to article page