Objective To discuss the application of spiral CT angiography in postoperative re-examination of lower limb artery stent implantation. Methods During the period from March 2012 to March 2014 at the Affiliated Nanjing Hospital of Nanjing Medical University, CT angiography was carried out in 67 patients who had received stent implantation for arteriosclerotic occlusion of lower limb. The diseases involved 78 lower limbs, and a total of 85 stents were employed. The volume rendering (VR), maximum intensity projection (MIP), multi-planar reformation (MPR) and curved surface reconstruction (CSR) were performed to stereoscopically display the lesion’s anatomy as well as the implanted stents, and the imaging manifestations were compared with the clinical symptoms and DSA findings. Results Successful examination was accomplished in 65 patients (81 stents in total), and clear images were obtained. Of the 81 stents, no stenosis was seen in 43, Ⅱ - Ⅳ grade stenosis in 32 and complete occlusion in 6. The results were closely correlated with the clinical symptoms. The CT angiography manifestations in 31 patients (34 stents in total) were compared with their DSA performed in two weeks, and the results showed that the stenotic degrees of three stents judged by CT angiography were not consistent with those judged by DSA. The consistent rate of CT angiography was 91.2% when taking DSA as the standard. Conclusion Lower limb arterial CT angiography examination is a safe and non-invasive technique, it can clearly display the stent inner canal. Therefore, this technique is of great value in postoperative re- examination of lower limb artery stent implantation.

To provide basis for prevention and treatment by analyzing the clinical features, emotional and cognitive states and their correlations of idiopathic tinnitus. Cross-sectional study was used. Thirty-six right, 44 left, and 46 bilateral idiopathic tinnitus patients diagnosed in Beijing Tongren Hospital were prospectively enrolled from October, 2020 to February, 2022. The clinical data was recorded and the THI, DBI, STAI, and MoCA were evaluated. The clinical features and the incidence of severe tinnitus, hearing lose, anxiety, and cognitive impairment were compared by one-way ANOVA, Kruskal-Wallis H, and chi-square test. The correlation between tinnitus or hearing and emotional and cognitive states were evaluated by multivariable correlation analysis. There was no significant difference in age, BMI, years of education, tinnitus duration, and the incidence of hearing loss among groups ( F=0.730, P=0.484; F=1.535, P=0.219; F=1.506, P=0.226;χ2=4.242, P=0.120;χ2=6.672, P=0.083). In right, left, and bilateral tinnitus patients, the number of severe tinnitus was 12, 7, and 20 cases and the incidence was 33.3%, 15.9%, and 43.5%; the number of depression was 13, 14, and 26 cases and incidence was 36.1%, 31.8%, and 53.5%; the number of trait anxiety was 3, 2, and 10 cases and the incidence was 8.3%, 4.5%, and 21.7%. Compared with left tinnitus patients, the incidence of severe tinnitus, depression, and trait anxiety was higher in bilateral tinnitus patients (χ2=8.139, P=0.004;χ2=5.558, P=0.018;χ2=5.753, P=0.007). The incidence of state anxiety and cognitive impairment were no significant difference among groups (χ2=0.142, P=0.931;χ2=1.338, P=0.512). The overall incidence of state anxiety and cognitive impairment were 16.7%(21/126) and 37.3%(47/126) respectively. There was positive correlation between THI score and BDI, S-AI, and T-AI scores ( r=0.529, P=0.001; r=0.649, P<0.001; r=0.483, P=0.003) and negative correlation between THI and MoCA scores ( r=-0.364, P=0.029) in right tinnitus group. The positive correlation was found between THI score and BDI, S-AI, and T-AI scores in left tinnitus group ( r=0.508, P<0.001; r=0.506, P<0.001; r=0.357, P=0.017). The positive correlation between THI score and BDI, S-AI, and T-AI scores ( r=0.753, P<0.001; r=0.527, P<0.001; r=0.536, P<0.001) and the positive correlation between tinnitus duration and MoCA score( r=0.334, P=0.023) were also found in bilateral tinnitus group.

OBJECTIVE To observe the changes of static functional connectivity(sFC) and dynamic functional connectivity(dFC) of amygdala subregions in patients with bilateral idiopathic tinnitus and hearing loss(TINHL). METHODS The resting-state functional magnetic resonance imaging(fMRI) data of 30 patients with bilateral tinnitus and hearing loss and 37 normal controls(NCs) were collected to analyze the intensity changes of sFC and dFC in 8 subregions of amygdala and the whole brain in TINHL patients. RESULTS There were no significant differences in age,sex and education between the two groups. Compared with the NCs group,the sFC intensity of the right basolateral subregion and right cerebellar peduncle 1 region,the left basolateral subregion and left orbital medial frontal gyrus and left angular gyrus in TINHL group was significantly decreased. The dFC intensity of left amygdalostriatal subregion and left precuneus in TINHL group was increased,but the dFC intensity was reduced in the left basolateral subregion and right angular gyrus as well as between the right superficial subregion and right medial orbital of superior frontal gyrus. CONCLUSION Among the 8 subregions of amygdala,the bilateral basolateral subregions,the left amygdalostriatal subregion and the right superficial region shown abnormal functional connectivity with other regions of the brain,which are the important parts of emotional abnormalities in TINHL.

To provide basis for prevention and treatment by analyzing the clinical features, emotional and cognitive states and their correlations of idiopathic tinnitus. Cross-sectional study was used. Thirty-six right, 44 left, and 46 bilateral idiopathic tinnitus patients diagnosed in Beijing Tongren Hospital were prospectively enrolled from October, 2020 to February, 2022. The clinical data was recorded and the THI, DBI, STAI, and MoCA were evaluated. The clinical features and the incidence of severe tinnitus, hearing lose, anxiety, and cognitive impairment were compared by one-way ANOVA, Kruskal-Wallis H, and chi-square test. The correlation between tinnitus or hearing and emotional and cognitive states were evaluated by multivariable correlation analysis. There was no significant difference in age, BMI, years of education, tinnitus duration, and the incidence of hearing loss among groups ( F=0.730, P=0.484; F=1.535, P=0.219; F=1.506, P=0.226;χ2=4.242, P=0.120;χ2=6.672, P=0.083). In right, left, and bilateral tinnitus patients, the number of severe tinnitus was 12, 7, and 20 cases and the incidence was 33.3%, 15.9%, and 43.5%; the number of depression was 13, 14, and 26 cases and incidence was 36.1%, 31.8%, and 53.5%; the number of trait anxiety was 3, 2, and 10 cases and the incidence was 8.3%, 4.5%, and 21.7%. Compared with left tinnitus patients, the incidence of severe tinnitus, depression, and trait anxiety was higher in bilateral tinnitus patients (χ2=8.139, P=0.004;χ2=5.558, P=0.018;χ2=5.753, P=0.007). The incidence of state anxiety and cognitive impairment were no significant difference among groups (χ2=0.142, P=0.931;χ2=1.338, P=0.512). The overall incidence of state anxiety and cognitive impairment were 16.7%(21/126) and 37.3%(47/126) respectively. There was positive correlation between THI score and BDI, S-AI, and T-AI scores ( r=0.529, P=0.001; r=0.649, P<0.001; r=0.483, P=0.003) and negative correlation between THI and MoCA scores ( r=-0.364, P=0.029) in right tinnitus group. The positive correlation was found between THI score and BDI, S-AI, and T-AI scores in left tinnitus group ( r=0.508, P<0.001; r=0.506, P<0.001; r=0.357, P=0.017). The positive correlation between THI score and BDI, S-AI, and T-AI scores ( r=0.753, P<0.001; r=0.527, P<0.001; r=0.536, P<0.001) and the positive correlation between tinnitus duration and MoCA score( r=0.334, P=0.023) were also found in bilateral tinnitus group.

The presence of physiological barriers in the eye （both external and internal） makes conventional ophthalmic medications （eye drops， ointments， gels， etc.） less bioavailable and difficult to reach the posterior segment of the eye. Although intravitreal injection can deliver drugs to the posterior segment of the eye， it has disadvantages such as infection， injury， and poor tolerance. Ophthalmic microneedle breaks through the intra- and extra-ocular barriers， enabling the drug to reach the target site accurately and to be released continuously greatly avoiding intraocular infections and injuries， and improving the bioavailability of the drug， which has obvious advantages as an ophthalmic drug delivery tool. Ophthalmic microneedle can be classified into hollow microneedle， dissolving microneedle， and coated microneedle according to the usage methods. Each type of microneedle has its own advantages and has shown satisfactory performance in the treatment of diseases such as bacterial and fungal keratitis， glaucoma， exudative age-related macular degeneration， diabetic macular edema， non-infectious uveitis， corneal neovascularization， and even choroidal melanoma.