| ADC | apparent diffusion coefficient |
| CBT | cognitive-behavioral therapy |
| CNS | central nervous system |
| CT | computed tomography |
| DMS-V | Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition |
| DTI | diffusion tensor imaging |
| FA | fractional anisotropy |
| GAF | the Global Assessment of Functioning scale |
| HDRS | the Hamilton Rating Scale for Depression |
| MD | mean diffusivity |
| MRI | magnetic resonance imaging |
| OCD | obsessive–compulsive disorder |
| rTMS | transcranial magnetic stimulation |
| SLF | superior longitudinal fasciculus |
| SRI | serotonin reuptake inhibitor |
| SSRI | selective serotonin reuptake inhibitors |
| tDCS | transcranial direct current stimulation |
| Y-BOCS | the Yale–Brown Obsessive-Compulsive Scale |