Objective To study the developmental process of the region of basal nuclei of postmortem fetuses by 3.0 T and 7.0 T MRI.Methods One hundred and thirty-one postmortem fetuses of 14 to 40 weeks of gestational age(GA)were scanned by 3.0 T MR,of which 11 fetuses of 14-27 weeks of GA were chosen and scanned by 7.0 T MR. The time when the structures in the region of basal nuclei could be detected and the changes of MR signal intensity were analyzed for MRI of different Tesla.Results On 3.0 T MRI.the dorsal thalamus could be delineated as early as 14 weeks of GA. The germinal matrix, caudate nucleus,and putamen could be visualized as early as 15 weeks of GA. The globus pallidus could be described as early as 18 weeks of GA.and the internal capsule and external capsule could be shown as early as 20 weeks of GA. The signal of the caudate nucleus during 15-30 weeks of GA was relatively hypointense on T1WI and hyperintense on T2WI.but during 31-40 weeks of GA, it was relatively hyperintense on T1WI and hypointense on T2WI. The putamen had a relatively high signal intensity on T1WI and low signal intemity on T1WI during 15-17 weeks of GA, and it appeared patchy during 18-25 weeks of GA,then it had a relatively low signal intensity on T1WI and high signal intensity on T2WI during 26-30 weeks of GA, and during 31-40 weeks of GA,its signal intensity was relatively high on T1WI and low on T2WI.The globus pallidus had a relatively high signal intensity on T1WI and low signal intensity on T2WI during 20-40 weeks of GA Compared to the 3.0 T MRI,the T2 images of 7.0 T MRl were more clear,and most structures in the region of basal nuclei could be clearly displayed as early as 16 weeks of GA.such as the germinal matrix,caudate nucleus,dorsal thalamus,putamen,globus pallidus,internal capsule,and external capsule.The claustrum could be delineated as early as 18 weeks of GA on 7.0 T MRI. Conclusions 3.0 T MRI could show the developmental process of the region of basal nuclei well,but the T2 images of 7.0 TMRl were comparatively better.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective:To investigate the relationship between the duration of folic acid supplementation,gesta-tional diabetes mellitus(GDM)and adverse perinatal outcomes based on generalized linear mixed model.Meth-ods:Clinical data was collected of 759 pairs of mothers and children who delivered at the First Affiliated Hospital of Hebei North University from January 2021 to December 2022.The adverse perinatal outcomes of this study in-cluded cesarean section,premature birth,macrosomia,low birth weight(LBW),large for gestational age(LGA),and small for gestational age infant(SGA).Generalized linear mixed model was used to analyze the impact of GDM and supplementation with folic acid for a duration of ≥3 months on the risk of adverse perinatal outcomes.A stratified analysis of the duration of folic acid supplementation was conducted to determine whether it was a con-founding factor or influencing factor of GDM and adverse birth outcomes.Results:A total of 748 patients(98.55％)received folic acid supplementation before and during pregnancy,with a total of 743 patients(97.89％)receiving folic acid supplementation during pregnancy and 496 patients(65.35％)receiving folic acid supplementation before pregnancy.77 mothers were diagnosed with GDM,with an incidence rate of 10.14％.Compared with those who received folic acid supplementation before pregnancy for＜3 months,those who re-ceived folic acid supplementation before pregnancy for ≥ 3 months were associated with an increased risk of GDM.The adjusted RR(aRR)was 1.72(95％CI 1.17-2.53).The GDM patients who received folic acid sup-plementation for≥3 months before pregnancy was associated with a reduced risk of SGA,with an aRR of 0.40(95％CI 0.18-0.89).In the subgroup of pregnant women who received folic acid supplementation for≥3 months,GDM was associated with an increased risk of cesarean section(aRR 1.36,95％CI 1.06-1.75))and macrosomia(aRR2.11,95％CI 1.06-4.20),but both aRR were lower than fixed effect RR of 1.53(95％CI 1.01-2.34)and 2.43(95％CI 12.7-4.66),respectively.and the above differences were statistically signifi-cant(P＜0.01).Conclusions:Supplementing folic acid for≥3 months before pregnancy increases the risk of GDM,but reduces the risk of SGA birth in patients with GDM.Supplementing folic acid during pregnancy for≥3 months has a reducing effect on the risk of adverse perinataloutcomes of cesarean section and macrosomia in women with GDM.

Objective To observe changes of brain function synchronized activity and gray matter structure alterations in patients with chronic subjective tinnitus (ST) with MRI.Methods Resting-state fMRI and 3D T1WI were obtained in 21 chronic ST patients (case group) and 21 healthy volunteers (control group).The voxel-based morphometry and regional homogeneity (ReHo) were used to analyze changes of the gray matter structure and volume.Results Compared with control group,ReHo values of the right superior,middle and inferior temporal gyrus increased in case group (P＜0.05),ReHo values of the right middle orbital frontal gyrus/inferior triangle frontal gyrus,left middle frontal gyrus/angular gyrus and cerebellar vermis decreased (P＜0.05),and the gray matter volume of the right middle temporal gyrus,superior dorsolateral frontal gyrus and left superior medial frontal gyrus decreased in case group (P＜0.01).Furthermore,Re Ho values of the right middle temporal gyrus were positively correlated with tinnitus handicap inventory scores (r=0.604,P=0.005) in case group.Conclusion The neural function synchronized activity and gray matter volume changes in the auditory and non-auditory brain regions of patients with chronic ST,providing references for finding possible neuroimaging markers.