SLC6A3 and Parkinson disease: Moreover, a study on PD patients with abnormal bilateral DAT binding analyzed by 3 Tesla (3T) MRI revealed that 14 among the 126 PD patients had bilaterally intact Nigrosome-1 and that this parameter was unilaterally unaffected in 7 among the 126 PD patients (Bae et al., 2016).