Magnetization Transfer Imaging of Treatment-resistant Depression.
Purpose To detect biophysical abnormalities in patients with postmedication treatment-resistant depression (TRD) with magnetization transfer imaging. Materials and Methods This study was approved by the local ethics committee, and written informed consent was obtained from all participants. Participants included 69 patients with major depressive disorder (MDD) (30 with TRD; 39 with non-TRD) and 41 healthy control subjects. Age and sex were examined with one-way analysis of variance and χ2tests and were well matched among the three groups. Whole-brain voxel-based analysis was used to compare the magnetization transfer ratio (MTR) between the three groups. Regional MTR values were used to analyze the correlations with symptom severity and illness duration. Results MTR differences were identified in the bilateral precentral gyrus, left cerebellum posterior lobe, left middle occipital lobe, left precuneus, and left temporal lobe among the three groups. Relative to patients with non-TRD, those with TRD had significantly lower MTR in the task-positive network regions, including the bilateral precentral gyrus and left middle occipital lobe, and had lower MTR in the default mode network regions, including the left precuneus and left temporal lobe. Regional MTRs were not associated with symptom severity or illness duration. Conclusion These results suggest that treatment resistance in patients with MDD may be mediated by macromolecular abnormalities in the task-positive and default mode functional networks.©RSNA, 2017 Online supplemental material is available for this article. An earlier incorrect version of this article appeared online. This article was corrected on March 29, 2017.
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Zhiyun
Z
Jia
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Wei
W
Peng
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Ziqi
Z
Chen
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Huaiqiang
H
Sun
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Huawei
H
Zhang
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Weihong
W
Kuang
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Xiaoqi
X
Huang
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Su
S
Lui
From the Huaxi MR Research Center, Department of Radiology and Nuclear Medicine (Z.J., W.P., Z.C., H.S., H.Z., X.H., S.L., Q.G.), and Department of Psychiatry (W.K.), West China Hospital of Sichuan University, Chengdu 610041, PR China; and Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, PR China (Z.J., W.P., Z.C.,H.S., H.Z., W.K., X.H., S.L., Q.G.).
Qiyong
Q
Gong
D000328:Adult; D000928:Antidepressive Agents / Q000627:therapeutic use; D001921:Brain / Q000000981:diagnostic imaging* / Q000187:drug effects*; D016022:Case-Control Studies; D003865:Major Depressive Disorder / Q000000981:diagnostic imaging* / Q000188:drug therapy; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D011569:Psychiatric Status Rating Scales
D000928:Antidepressive Agents