Objective Based on the clinical data and imaging manifestations of patients with ischemic stroke to establish a simple clinical prediction model that is used for identifying intracranial atherosclerotic stenosis-acute large vessel occlusion(ICAS-LVO in posterior circulation before surgery.Methods The clinical data of patients with acute large vessel occlusion(LVO in the posterior circulation,who received endovascular intervention at the First Affiliated Hospital of Nanjing Medical University of China from January 2019 to September 2022,were retrospectively analyzed.According to the intraoperative angiographic findings,the patients were divided into ICAS-LVO group and non-ICAS-LVO group.Univariate analysis and multivariate logistic regression analysis were used to analyze the patient's demographic characteristics,clinical history,imaging findings,and laboratory results,based on which a clinical prediction model for ICAS-LVO was established,and according to the relevant parameters a nomogram prediction model was plotted.Results A total of 110 patients with LVO in the posterior circulation who received endovascular treatment were included in the final analysis.In 51 patients(49.6％)the cause of vascular occlusion was the atherosclerotic stenosis of the intracranial arteries.Compared with non-ICAS-LVO group,in ICAS-LVO group the patients were younger,the incidence of atrial fibrillation was lower,and the level of plasma D-dimer was lower.Three factors,including atrial fibrillation,occlusion site and collateral circulation status,were finally screened out to establish the prediction model for ICAS-LVO.This model demonstrated acceptable calibration(Hosmer-Lemeshow test,P=0.562)and good discrimination ability(AUC=0.956;95％CI:0.906-0.986).Conclusion The clinical prediction model for ICAS-LVO,which is established on the three predictive factors(absence of atrial fibrillation,occlusion located at the V4 segment of the vertebral artery or at the proximal to mid segment of the basilar artery,and a favorable collateral circulation),carries high sensitivity and accuracy.This model can help neurointervention physicians to make early identification of ICAS-LVO and to promptly formulate vascular recanalization treatment strategies.

Objective To evaluate the clinical value of optic nerve sheath diameter(ONSD)measured on thin-slice CT scan in the diagnosis and prognostic assessment of cerebral venous sinus thrombosis(CVST).Methods The clinical data of patients with CVST,who were admitted to the First Affiliated Hospital of Nanjing Medical University of China to receive treatment from January 1,2016 to December 31,2022,were retrospectively analyzed.The difference in ONSD was compared between CVST patients and normal population,the postoperative changes in ONSD was analyzed.Results A total of 49 patients with CVST(CVST group)and 49 normal persons having no brain disorders(control group)were enrolled in this study.In CVST group,the preoperative ONSD was(5.33±0.50)mm,which was significantly higher than(4.40±0.40)mm in control group(P＜0.001),the postoperative ONSD remarkably decreased to(4.98±0.59)mm(P＜0.01).The difference value between postoperative ONSD and preoperative ONSD in the patients receiving pure anticoagulation treatment was not statistically significant different from that in the patients receiving endovascular treatment[(-0.43±0.22)mm vs.(-0.40±0.42)mm,P=0.84].The preoperative ONSD in the patients having intracranial hemorrhage and in the patients having no intracranial hemorrhage was(5.26±0.51)mm and(5.41±0.49)mm respectively(P=0.31),and the difference value between postoperative ONSD and preoperative ONSD was(-0.39±0.40)mm and(-0.45±0.25)mm respectively(P=0.66).At the three-month follow-up visit,the difference in ONSD between the patients having a good prognosis(mRS score being 0-2 points)and the patients having a poor prognosis was not statistically significant(P＞0.05).Conclusion ONSD that is measured on plain head CT scan can be used as a response indicator of elevated intracranial pressure in CVST patients,which can be used to monitor the changes in intracranial pressure before and after treatment,but its value in assessing the curative efficacy of different therapeutic methods needs to be further explored.

Objective:To investigate the predictive factors for the outcome of patients with complete recanalization after endovascular treatment (EVT) for acute basilar artery occlusion (ABAO).Methods:Patients with ABAO underwent EVT at Jiangsu Provincial People's Hospital and Nanjing Pukou People's Hospital from January 2015 to December 2022 were included retrospectively. Complete recanalization was defined as a modified Thrombolysis in Cerebral Infarction (mTICI) grade 3 after EVT. The main outcome measure was the clinical outcome evaluated by the modified Rankin Scale at 90 days after onset. 0-2 points were defined as good outcome and >2 points were defined as poor outcome. The secondary outcome measure was death within 90 days after onset. Multivariate logistic regression analysis was used to determine the independent predictive factors for poor outcome and mortality. Receiver operating characteristic (ROC) curve was used to analyze the predictive value of the independent predictive factors for poor outcome or mortality. Results:A total of 73 patients with completed recanalization after EVT for ABAO were enrolled, including 55 males (75.3%), aged 67.2±1.58 years, with the median baseline National Institutes of Health Stroke Scale (NIHSS) score 23, median baseline Basilar Artery on Computed Tomography Angiography (BATMAN) score 7, and median baseline posterior circulation Alberta Stroke Program Early CT Score (pc-ASPECTS) 8. After 90 days of onset, 34 patients (46.6%) had poor outcome and 16 (21.9%) died. Multivariate logistic regression analysis showed that higher baseline NIHSS score (odds ratio [ OR] 1.151, 95% confidence interval [ CI] 1.041-1.273; P=0.006), lower baseline pc-ASPECTS ( OR 0.096, 95% CI 0.024-0.386; P=0.001), lower baseline BATMAN score ( OR 0.394, 95% CI 0.162-0.961; P=0.041), and non-first-pass recanalization ( OR 5.011, 95% CI 1.675-23.343; P=0.016) were independently associated with the poor outcome. ROC curve analysis showed that the area under the curve for predicting poor outcome by combining these independent predictive factors was 0.966 (95% CI 0.930-0.964). Multivariate logistic regression analysis showed that older age ( OR 1.147, 95% CI 1.010-1.303; P=0.035), higher baseline NIHSS score ( OR 1.236, 95% CI 1.040-1.470; P=0.016), lower baseline pc-ASPECTS ( OR 0.011, 95% CI 0.002-0.249; P=0.015), and lower baseline BATMAN score ( OR 0.050, 95% CI 0.004-0.618; P=0.020) were independently associated with mortality within 90 days after onset. ROC curve analysis showed that the area under the curve for predicting mortality by combining these independent predictive factors was 0.948 (95% CI 0.899-0.997). Conclusion:For patients with ABAO who had complete recanalization after EVT, the baseline NIHSS score, baseline pc-ASPECTS, baseline BATMAN score, and non-first-pass recanalization are the independent predictive factors for poor outcome at 90 days after onset, while age, baseline NIHSS score, baseline pc-ASPECTS, and baseline BATMAN score are the independent predictive factors for mortality within 90 days after onset.

Objective:To compare the clinical efficacies of endovascular treatments in patients with acute basilar artery occlusion (ABAO) caused by large-artery atherosclerosis (LAA) and cardioembolism (CE).Methods:From March 2018 to February 2021, 104 patients with ABAO accepted endovascular treatments in Department of Neurology and Department of Interventional Radiology, Xuyi County People's Hospital of Huaian City were enrolled; these patients were classified into either a LAA group or a CE group according to Trial of ORG 10172 in Acute Stroke Treatment classification (TOAST). The differences in general data, procedure information, and clinical efficacies were compared between the 2 groups. Univariate and multivariate Logistic regression analyses were used to identify the influencing factors for poor prognosis.Results:In these 104 patients, 51 patients (49.0%) were into the LAA group and 53 patients (51.0%) into the CE group. Ninety-six patients (92.3%) acquired successful revascularization, and 35 patients (33.7%) had good prognosis (modified Rankin scale scores of 0-2) 90 d after surgery. LAA group had significantly lower percentage of patients with atrial fibrillation, significantly lower baseline National Institutes of Health Stroke Scale scores, statistically higher percentages of patients with lower and middle basilar artery occlusion and patients accepted rescued stenting, and statistically longer procedure time ( P<0.05). There were no significant differences between the two groups in terms of successful recanalization percentage, symptomatic intracranial hemorrhage incidence, and prognosis 90 d after surgery ( P>0.05). Age ( OR=0.935, 95%CI: 0.891-0.981, P=0.006) and semiquantitative scores of basilar artery based on computed tomography angiography ( OR=1.520, 95%CI: 1.180-1.959, P=0.001) were independent influencing factors for poor prognosis. TOAST etiology (LAA/CE) was not an independent influencing factors for poor prognosis ( OR=1.175, 95%CI: 0.461-2.933, P=0.736). Conclusion:There are differences in risk factors, vascular occlusion sites, endovascular treatment, and procedure time between patients with ABAO caused by LAA and CE; however, no obvious difference in clinical outcomes is noted, and there was no obvious correlation between stroke etiology and prognoses.

Adipose-derived mesenchymal stem cells (ASCs) are pluripotent adult mesenchymal stem cells that are expected to be ideal seed cells for bone tissue engineering(BTE) due to their biosecurity, abundance, and easy access. However, in comparison with bone marrow mesenchymal stem cells, ASCs possess a relatively limited osteogenic capacity and often require further induction. Advances on strategies for promoting osteogenic differentiation of ASCs are reviewed from following aspects: optimization of scaffolds, addition of bioactive factors or drugs, non-coding RNA regulation, and physical stimulation, so as to provide references for the use of ASCs in BTE.

Adipose-derived mesenchymal stem cells (ASCs) are pluripotent adult mesenchymal stem cells that are expected to be ideal seed cells for bone tissue engineering(BTE) due to their biosecurity, abundance, and easy access. However, in comparison with bone marrow mesenchymal stem cells, ASCs possess a relatively limited osteogenic capacity and often require further induction. Advances on strategies for promoting osteogenic differentiation of ASCs are reviewed from following aspects: optimization of scaffolds, addition of bioactive factors or drugs, non-coding RNA regulation, and physical stimulation, so as to provide references for the use of ASCs in BTE.

Objective:To investigate the effect of ultrapulse fractional carbon dioxide laser (UFCL) microporous transdermal triamcinolone acetonide acetate (TAA) in the treatment of early hypertrophic scar.Methods:Ninety patients with early hypertrophic scar in Luoyang Central Hospital Affiliated to Zhengzhou University from March 2016 to March 2019 were included and randomly divided into study group ( n=30), control group A ( n=30) and control group B ( n=30). The control group A was treated with UFCL, the control group B was treated with TAA, and the study group was treated with UFCL combined with TAA. All three groups were treated for 6 months. The effectiveness of the three groups before and 6 months after treatment was compared, the status of hypertrophic scar was evaluated by Vancouver Scar Scale (VSS), the pain degree before and after treatment was evaluated by Visual Analogue Scale (VAS), and the patients’ satisfaction with the treatment was also evaluated. Results:(1) The study group and the control group were effective in the treatment of early hypertrophic scar, and the effective rate of the study group was higher than that of the control group A and the control group B [93.3%(28/30) vs. 70.0%(21/30) and 66.7%(20/30); all P<0.05]. (2) There was no significant difference in the scores of color, thickness, softness and vascular distribution among the three groups before treatment ( P>0.05). After 6 months of treatment, the scores of the three groups were lower than those before treatment ( P<0.05). The scores of study group were lower than those of control group A and control group B respectively( P<0.05). (3) There was no significant difference in VAS scores among the three groups before treatment ( P>0.05). The VAS scores of the three groups after treatment were lower than those before treatment, and the VAS scores in study group were lower than those in control group A and control group B( P<0.05). (4) After 6 months of treatment, the satisfaction rate of study group was higher than that of control group A and control group B ( P<0.05). Conclusions:UFCL microporous transdermal TAA can effectively treat early hypertrophic scar, reduce the VSS score and VAS score of hypertrophic scar, significantly improve the state of scar hyperplasia, and improve the satisfaction rate of patients, which can be widely used in clinic.

Objective:To investigate the effect of ultrapulse fractional carbon dioxide laser (UFCL) microporous transdermal triamcinolone acetonide acetate (TAA) in the treatment of early hypertrophic scar.Methods:Ninety patients with early hypertrophic scar in Luoyang Central Hospital Affiliated to Zhengzhou University from March 2016 to March 2019 were included and randomly divided into study group ( n=30), control group A ( n=30) and control group B ( n=30). The control group A was treated with UFCL, the control group B was treated with TAA, and the study group was treated with UFCL combined with TAA. All three groups were treated for 6 months. The effectiveness of the three groups before and 6 months after treatment was compared, the status of hypertrophic scar was evaluated by Vancouver Scar Scale (VSS), the pain degree before and after treatment was evaluated by Visual Analogue Scale (VAS), and the patients’ satisfaction with the treatment was also evaluated. Results:(1) The study group and the control group were effective in the treatment of early hypertrophic scar, and the effective rate of the study group was higher than that of the control group A and the control group B [93.3%(28/30) vs. 70.0%(21/30) and 66.7%(20/30); all P<0.05]. (2) There was no significant difference in the scores of color, thickness, softness and vascular distribution among the three groups before treatment ( P>0.05). After 6 months of treatment, the scores of the three groups were lower than those before treatment ( P<0.05). The scores of study group were lower than those of control group A and control group B respectively( P<0.05). (3) There was no significant difference in VAS scores among the three groups before treatment ( P>0.05). The VAS scores of the three groups after treatment were lower than those before treatment, and the VAS scores in study group were lower than those in control group A and control group B( P<0.05). (4) After 6 months of treatment, the satisfaction rate of study group was higher than that of control group A and control group B ( P<0.05). Conclusions:UFCL microporous transdermal TAA can effectively treat early hypertrophic scar, reduce the VSS score and VAS score of hypertrophic scar, significantly improve the state of scar hyperplasia, and improve the satisfaction rate of patients, which can be widely used in clinic.

To evaluate the safety and efficacy of mechanical thrombectomy with stent-retriver for anterior circulation small vessel occlusion in patients with acute ischemic stroke (AIS).Methods:From a prospectively collected thrombectomy database of consecutive patients with AIS between January 2017 and November 2018, 311 angiographic images were analyzed to assess small vessel occlusions (A 2 and M 2 segments). Patients were categorized into alteplase with thrombectomy group and thrombectomy alone group. The primary outcome was a favorable outcome (modified Rankin Scale scores 0-2) at 90 days. Secondary outcomes were successful recanalization (modified thrombolysis in cerebral infarction 2b or 3), symptomatic intracranial hemorrhage, and 90-day mortality. Results:Small vessel occlusions were identified in 19 patients, including 14 M 2occlusions, two A 2occlusions, and three M 2+A 2 occlusions. Six patients were in the alteplase with thrombectomy group and 13 patients in the thrombectomy alone group. Favorable outcome was achieved in eight of 19 patients at 90 days. Successful recanalization was achieved in 18 patients (18/19), symptomatic intracranial hemorrhage was observed in one patient (1/19), and death was recorded in five patients (5/19). No statistically significant difference was detected between the two groups with regard to successful recanalization (6/6 in the alteplase with thrombectomy group vs 12/13 in the thrombectomy alone group), symptomatic intracranial hemorrhage (0/6 vs 1/13), favorable outcome (2/6 vs 6/13) and death (1/6 vs 4/13; all P>0.05). Conclusion:As to anterior circulation small vessel occlusions, the combination-therapy within 4.5 hours or mechanical thrombectomy alone in extended time window with perfusion evaluation may be both safe and effective.

This paper explores the relationship between the cardiac volume and time, which is applied to control dynamic heart phantom. We selected 50 patients to collect their cardiac computed tomography angiography (CTA) images, which have 20 points in time series CTA images using retrospective electrocardiograph gating, and measure the volume of four chamber in 20-time points with cardiac function analysis software. Then we grouped patients by gender, age, weight, height, heartbeat, and utilize repeated measurement design to conduct statistical analyses. We proposed structured sparse learning to estimate the mathematic expression of cardiac volume variation. The research indicates that all patients' groups are statistically significant in time factor ( = 0.000); there are interactive effects between time and gender groups in left ventricle ( = 8.597, = 0.006) while no interactive effects in other chambers with the remaining groups; and the different weight groups' volume is statistically significant in right ventricle ( = 9.004, = 0.005) while no statistical significance in other chambers with remaining groups. The accuracy of cardiac volume and time relationship utilizing structured sparse learning is close to the least square method, but the former's expression is more concise and more robust. The number of nonzero basic function of the structured sparse model is just 2.2 percent of that of least square model. Hence, the work provides more the accurate and concise expression of the cardiac for cardiac motion simulation.