1.A whole genome analysis of two coxsackievirus A2 strains isolated from patients with herpetic angina in Shanghai
Jingyi ZHANG ; Jiayu WANG ; Run LI ; Fanghao FANG ; Wencheng WU ; Wanju ZHANG ; Min CHEN ; Xin CHEN ; Zheng TENG
Shanghai Journal of Preventive Medicine 2025;37(3):215-221
		                        		
		                        			
		                        			ObjectiveTo understand the whole genome characteristics and the information for genetic evolution in the two coxsackievirus A2 (CVA2) strains isolated from patients with herpangina in Shanghai, and to provide a scientific basis for the prevention and treatment of herpetic angina. MethodsTwo CAV2 strains isolated from patients with herpetic angina in Shanghai were performed whole genome sequencing and analysis for phylogenetics, nucleotide homology, and evolution. ResultsA phylogenetic analysis of the VP1 region revealed that the two Shanghai strains both belonged to CVA2 genotype D, with the highest homology to OL357660, a strain from Yunnan. The average nucleotide identity (ANI) of the whole genome between the two Shanghai strains was 98.88%, and the ANI of the whole genome comparisons to other CVA2 genotype D strains and CVA2 genotypes A-C strains ranged from 84.64% to 97.42% and from 79.21% to 84.20%, respectively. The two Shanghai strains had low homology in the 3D region compared to the existing CVA2 strains. The phylogenetic analysis and sliding window nucleotide similarity analysis indicated that the two Shanghai strains and the Yunnan OL357660 strain might constitute a new genetic lineage. ConclusionThe two CVA2 strains isolated for the first time in Shanghai are assigned to genotype D (GenBank: PQ130039 and PQ130040), which is identical to the existing subtype prevalent in China. As represented by the Shanghai strains, a new CVA2 genetic lineage is been identified. This study has enriched the data on genetic evolution and genetic variation of CVA2 in Shanghai, indicating the requirement to strengthen surveillance for the epidemiological pattern of CVA2. 
		                        		
		                        		
		                        		
		                        	
2.Mechanism of Shenqi guben formula in improving cancer-related fatigue by regulating IL-17 signaling pathway
Xin LI ; Chongkai FANG ; Yue HUANG ; Yaoxuan LI ; Haifu HUANG ; Xianlin WU ; Zhesheng CHEN ; Meng LI
China Pharmacy 2025;36(14):1722-1729
		                        		
		                        			
		                        			OBJECTIVE To explore the mechanism of Shenqi guben formula (SQGB) in improving cancer-related fatigue (CRF) based on network pharmacology and cellular experiments. METHODS Active components of SQGB and CRF-related targets were identified on the basis of databases such as the Traditional Chinese Medicine Systems Pharmacology platform. An in vitro CRF cell model was established by inducing A549 cells with interleukin-17 (IL-17). Cells were treated with low (1.0 mg/mL) or high (1.5 mg/mL) concentrations of SQGB. The effects on cell viability, migration, apoptosis, inflammatory factors, mRNA expression, apoptosis-related proteins and key proteins 011) of IL-17 signaling pathway were evaluated using scratch assay, flow cytometry, ELISA, real-time fluorescent quantitative PCR and Western blot analysis. RESULTS SQGB contained 84 active components acting on 209 potential CRF targets. Among E-these, quercetin, kaempferol, and luteolin were identified as the core components of the compound. Core targets included tumor protein p53, AKT serine/threonine kinase 1, IL-6, and tumor necrosis factor (TNF). IL-17, TNF and phosphatidylinositol-3- kinase-serine/threonine protein kinase (PI3K/Akt) signaling pathways were identified as crucial pathways. Compared with IL-17 intervention group, the cell migration rate, B-cell lymphoma 2 (Bcl-2) protein expression, the levels of IL-6 and TNF-α in the supernatant, mRNA expression of IL-17 receptor A (IL-17RA), TNF-α, and IL-6, as well as the protein expression of IL-17RA and nuclear factor kappa-B p65 subunit (p65), and phosphorylated (p)-p65/p65 ratio in IL-17+SQGB low- and high- quality concentration groups were all significantly decreased or down-regulation (P<0.05); the apoptosis rate, expression levels of Bcl-2 associated X protein (Bax) and cleaved caspase-3 protein, the ratio of Bax/Bcl-2, the expression level of p-p38 protein, and the p- p38/p38 ratio were all significantly increased or up-regulated (P<0.05). Moreover, the improvement effects of these indicators were mostly better in the high-quality concentration groups compared to the low-quality concentration groups (P<0.05). CONCLUSIONS SQGB ameliorates CRF by regulating the IL-17 signaling pathway, inhibiting the expression of inflammatory factors, and activating p38 MAPK-dependent apoptosis pathway.
		                        		
		                        		
		                        		
		                        	
3.Discussion on Research Paradigm and Layout Based on Disease (Psoriasis) Specifically Responding to Traditional Chinese Medicine
Liu LIU ; Xiaoying SUN ; Mei MO ; Zihan FANG ; Yaqiong ZHOU ; Bin LI ; Xiaoxiao ZHANG ; Xin LI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(18):203-211
		                        		
		                        			
		                        			To implement the Opinions of the State Council of the Central Committee of the Communist Party of China on Promoting the Inheritance and Innovative Development of Traditional Chinese Medicine, delve into the diseases specifically responding to traditional Chinese medicine (TCM), and serve the building of advantageous specialties, clinical talent cultivation, national research layout, and academic innovation, the Chinese Association of Chinese Medicine sponsored the salons in multiple fields to discuss the diseases specifically responding to TCM. On August 26, 2023, the 25th salon on the diseases specifically responding to TCM was held in Shanghai. In view of the advantages of TCM and integrated traditional Chinese and Western medicine in the diagnosis and treatment of psoriasis, Chinese and western medicine experts and interdisciplinary researchers carried out extensive and in-depth discussions and formed specific suggestions and consensus on the diagnosis and treatment of psoriasis with TCM and integrated traditional Chinese and Western medicine. However, there was still a lack of detailed research path. Under the guidance of the Chinese Association of Chinese Medicine, this paper analyzes the problems in the diagnosis and treatment of psoriasis from the occurrence and development of psoriasis. According to the advantages and characteristics of TCM and integrated traditional Chinese and Western medicine in the diagnosis and treatment of psoriasis, this paper puts forward the main points of research layout for psoriasis from the three aspects of psoriasis diagnosis and treatment, comorbidity prevention, and chronic disease management as follows: ① optimization of the syndrome differentiation system for psoriasis, ② optimization of assessment indicators for psoriasis, ③ recurrence mechanisms of psoriasis, ④ construction and research of TCM prevention and treatment of psoriasis recurrence, ⑤ construction of the comorbidity spectrum and TCM theoretical system of psoriasis, ⑥ comorbidity mechanisms of psoriasis. Furthermore, this article proposed the research layout and directions, expected goals and values, and funding priorities. Therefore, on the basis of the series of salons about psoriasis as a disease specifically responding to TCM, this article puts forward the research paradigm of psoriasis, aiming to facilitate the high-quality development of TCM and provide reference for the national research layout, the research and development of new TCM preparations, the selection of research topics, and the formulation of guidelines and consensus. 
		                        		
		                        		
		                        		
		                        	
4.Long-term survival of surgical versus non-surgical treatment for esophageal squamous cell carcinoma in patients ≥70 years: A retrospective cohort study
Kexun LI ; Changding LI ; Xin NIE ; Wenwu HE ; Chenghao WANG ; Kangning WANG ; Guangyuan LIU ; Junqiang CHEN ; Zefen XIAO ; Qiang FANG ; Yongtao HAN ; Lin PENG ; Qifeng WANG ; Xuefeng LENG
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(05):619-625
		                        		
		                        			
		                        			Objective To compare the long-term survival of elderly patients with esophageal squamous cell carcinoma (ESCC) treated with surgical versus non-surgical treatment. Methods A retrospective analysis was conducted on the clinical data of elderly patients aged ≥70 years with ESCC who underwent esophagectomy or radiotherapy/chemotherapy at Sichuan Cancer Hospital from January 2009 to September 2017. Patients were divided into a surgical group (S group) and a non-surgical group (NS group) according to the treatment method. The propensity score matching method was used to match the two groups of patients at a ratio of 1∶1, and the survival of the two groups before and after matching was analyzed. Results A total of 726 elderly patients with ESCC were included, including 552 males and 174 females, with 651 patients aged ≥70-80 years and 75 patients aged ≥80-90 years. There were 515 patients in the S group and 211 patients in the NS group. The median follow-up time was 60.8 months, and the median overall survival of the S group was 41.9 months [95%CI (35.2, 48.5)], while that of the NS group was only 24.0 months [95%CI (19.8, 28.3)]. The 1-, 3-, and 5-year overall survival rates of the S group were 84%, 54%, and 40%, respectively, while those of the NS group were 72%, 40%, and 30%, respectively [HR=0.689, 95%CI (0.559, 0.849), P<0.001]. After matching, 138 patients were included in each group, and there was no statistical difference in the overall survival between the two groups [HR=0.871, 95%CI (0.649, 1.167), P=0.352]. Conclusion Compared with conservative treatment, there is no significant difference in the long-term survival of elderly patients aged ≥70 years who undergo esophagectomy for ESCC. Neoadjuvant therapy combined with surgery is still an important choice to potentially improve the survival of elderly patients with ESCC.
		                        		
		                        		
		                        		
		                        	
5.Adolescent Smoking Addiction Diagnosis Based on TI-GNN
Xu-Wen WANG ; Da-Hua YU ; Ting XUE ; Xiao-Jiao LI ; Zhen-Zhen MAI ; Fang DONG ; Yu-Xin MA ; Juan WANG ; Kai YUAN
Progress in Biochemistry and Biophysics 2025;52(9):2393-2405
		                        		
		                        			
		                        			ObjectiveTobacco-related diseases remain one of the leading preventable public health challenges worldwide and are among the primary causes of premature death. In recent years, accumulating evidence has supported the classification of nicotine addiction as a chronic brain disease, profoundly affecting both brain structure and function. Despite the urgency, effective diagnostic methods for smoking addiction remain lacking, posing significant challenges for early intervention and treatment. To address this issue and gain deeper insights into the neural mechanisms underlying nicotine dependence, this study proposes a novel graph neural network framework, termed TI-GNN. This model leverages functional magnetic resonance imaging (fMRI) data to identify complex and subtle abnormalities in brain connectivity patterns associated with smoking addiction. MethodsThe study utilizes fMRI data to construct functional connectivity matrices that represent interaction patterns among brain regions. These matrices are interpreted as graphs, where brain regions are nodes and the strength of functional connectivity between them serves as edges. The proposed TI-GNN model integrates a Transformer module to effectively capture global interactions across the entire brain network, enabling a comprehensive understanding of high-level connectivity patterns. Additionally, a spatial attention mechanism is employed to selectively focus on informative inter-regional connections while filtering out irrelevant or noisy features. This design enhances the model’s ability to learn meaningful neural representations crucial for classification tasks. A key innovation of TI-GNN lies in its built-in causal interpretation module, which aims to infer directional and potentially causal relationships among brain regions. This not only improves predictive performance but also enhances model interpretability—an essential attribute for clinical applications. The identification of causal links provides valuable insights into the neuropathological basis of addiction and contributes to the development of biologically plausible and trustworthy diagnostic tools. ResultsExperimental results demonstrate that the TI-GNN model achieves superior classification performance on the smoking addiction dataset, outperforming several state-of-the-art baseline models. Specifically, TI-GNN attains an accuracy of 0.91, an F1-score of 0.91, and a Matthews correlation coefficient (MCC) of 0.83, indicating strong robustness and reliability. Beyond performance metrics, TI-GNN identifies critical abnormal connectivity patterns in several brain regions implicated in addiction. Notably, it highlights dysregulations in the amygdala and the anterior cingulate cortex, consistent with prior clinical and neuroimaging findings. These regions are well known for their roles in emotional regulation, reward processing, and impulse control—functions that are frequently disrupted in nicotine dependence. ConclusionThe TI-GNN framework offers a powerful and interpretable tool for the objective diagnosis of smoking addiction. By integrating advanced graph learning techniques with causal inference capabilities, the model not only achieves high diagnostic accuracy but also elucidates the neurobiological underpinnings of addiction. The identification of specific abnormal brain networks and their causal interactions deepens our understanding of addiction pathophysiology and lays the groundwork for developing targeted intervention strategies and personalized treatment approaches in the future. 
		                        		
		                        		
		                        		
		                        	
6.Impact of peer dating behavior and cohabitation with parents on sexual behaviors among secondary vocational school students
JIA Xin, FANG Yuhang, JIN Yan, ZUO Xiayun, YU Chunyan, LIAN Qiguo, LI Lihe, HONG Ping, TU Xiaowen
Chinese Journal of School Health 2025;46(5):657-661
		                        		
		                        			Objective:
		                        			To understand the moderating effect of cohabitation with parents on the association between peer dating behavior and sexual behaviors among secondary vocational school students, so as to provide a scientific basis for preventing sexual behaviors among  secondary vocational school students.
		                        		
		                        			Methods:
		                        			From March to April 2021, an electronic questionnaire survey was conducted among 3 180 students from 6 vocational schools in Shanghai (urban, suburban, exurban) and Shaanxi (Shangluo, Ankang, Baoji) using cluster sampling. Spearman correlation analysis was used to investigate the relationship of cohabitation with parents, peer dating behavior and sexual behaviors among secondary vocational school students. Binary Logistic regression analysis was performed to investigate the role of cohabitation with parents on peer dating behavior and sexual behaviors among secondary vocational students.
		                        		
		                        			Results:
		                        			There was a significant negative between cohabitation with parents and sexual ( r =-0.04); and there was a positive correlation between peer dating behavior and sexual behaviors ( r =0.24), as well as cohabitation with parents and peer dating behavior ( r =0.04)( P <0.05). Multivariable Logistic regression analysis showed an association between peer dating behavior and the occurrence of sexual behaviors ( OR=2.79-12.95, P <0.05). Cohabitation with parents played a moderating role in the association between peer dating behavior and sexual behaviors, and a signification interaction was found between cohabitation with parents and reporting that a small part or about half of their peers had dating behavior ( OR =0.48,  P <0.05).
		                        		
		                        			Conclusions
		                        			The more peers  dating behavior are associated with a higher risk of sexual behaviors among secondary vocational school students, and cohabitation with parents can partly reduce this risk. School and family sexuality education for secondary vocational students should be strengthened to improve their interpersonal skills and decision-making, and ability to resist peer pressure, so as to reduce their risk of sexual behaviors.
		                        		
		                        		
		                        		
		                        	
7.Protective effect and mechanism of Longshengzhi capsules on cerebral ischemia-reperfusion injury in rats
Huanle FANG ; Xiaoming LI ; Yaming ZHOU ; Xin ZHANG ; Xiaoxi LIU ; Yanbin CHEN
China Pharmacy 2024;35(7):813-818
		                        		
		                        			
		                        			OBJECTIVE To explore the protective effect and mechanism of Longshengzhi capsules on cerebral ischemia- reperfusion injury in rats. METHODS The model of middle cerebral artery occlusion (MCAO) was established by using the improved thread occlusion method. The experiment was divided into six groups: sham surgery group (only separating blood vessels without inserting thread plugs, given the same volume of normal saline), model group (modeling, given the same volume of normal saline), nimodipine group (positive control, modeling, dose of 20 mg/kg), and low-dose, medium-dose, and high-dose groups of Longshengzhi capsules (modeling, doses of 0.72, 1.44 and 2.88 g/kg, respectively), with 10 mice in each group. Each group was given corresponding medication solution/normal saline by gavage, once a day, for 7 consecutive days. One hour after the last administration, the Zea Longa scoring method was used to score the neurological deficits in each group of rats, and the ABC enzyme-linked immunosorbent assay was used to detect the serum levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in rats; TTC staining was used to observe the volume of cerebral infarction in rats and calculate the cerebral infarction volume ratio. Hematoxylin eosin staining was used to observe the pathological changes in the brain tissue of rats. Immunohistochemical staining was used to detect the positive expression of NLRP3 protein in the brain tissue of rats. Real-time fluorescence quantitative PCR was used to detect mRNA relative expressions of Toll-like receptor 4 (TLR4) and nuclear factor-κB (NF-κB) in the brain tissue of rats. Western blot assay was adopted to detect the relative expressions of TLR4, NLRP3 and phosphorylated NF-κB (p-NF-κB) protein in the brain tissue of rats and its intracellular NF-κB protein. RESULTS Compared with the sham surgery group, the neural dysfunction score, serum levels of TNF-α and IL-6, cerebral infarction volume ratio, relative expression levels of NF-κB and TLR4 mRNA, as well as protein relative expressions of TLR4, NLRP3 and p-NF-κB in the brain tissue, and relative protein expression of intracellular NF-κB were increased significantly in the model group (P<0.01); the enlarged gap and significant edema were observed in cortical nerve cells of brain tissue in rats, with a large amount of inflammatory cell infiltration; the positive expression of NLRP3 protein in brain tissue of rats obviously increased. Compared with the model group, the levels of the above indicators in the medium-dose and high-dose groups of Longshengzhi capsules, as well as the Nimodipine group, were reversed to varying degrees, and most differences were statistically significant (P<0.05 or P<0.01); the pathological morphology observation showed a significant improvement, and the positive expression of NLRP3 protein in the brain tissue of rats was obviously reduced. CONCLUSIONS Longshengzhi capsules may inhibit TLR4/NF-κB/NLRP3 signaling pathway and neuroinflammatory response, thereby achieving a protective effect against cerebral ischemia-reperfusion injury in rats.
		                        		
		                        		
		                        		
		                        	
8.Efficacy of Fuzheng Hejie Prescription in the Treatment of Respiratory Viral Infection in Children and Its Effect on Immune Function
Xin-Yi LI ; Zong-Kan HU ; Yu XIE ; Wen-Ting MA ; Rong-Fang ZHOU ; Qi LYU ; Jie-Yu ZAN ; Ling-Fang ZHOU ; Ze-Ting YUAN
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(3):631-637
		                        		
		                        			
		                        			Objective To investigate the efficacy of Fuzheng Hejie Prescription(composed of Scutellariae Radix,Lonicerae Japonicae Flos,Agastachis Herba,Bupleuri Radix,Atractylodis Rhizoma,Glycyrrhizae Radix et Rhizoma,etc.)in the treatment of respiratory viral infections in children and to observe its effect on inflammatory factors and immune function.Methods A total of 203 children with respiratory viral infection of H1N1 virus were randomly divided into 101 cases in the observation group and 102 cases in the control group.Both groups were given the routine treatment for subsiding fever,maintaining water-electrolyte balance,and ensuring enough sleep.And additionally,the control group was given Ribavirin Granules and Ibuprofen Granules,and the observation group was given Fuzheng Hejie Prescription based on the treatment for the control group.The course of treatment covered 7 days.The changes of traditional Chinese medicine(TCM)syndrome scores and the levels of immunological indicators and inflammatory factors in the two groups were observed before and after the treatment.Moreover,the clinical efficacy,symptom resolution time and the incidence of adverse reactions were compared between the two groups of children.Results(1)In the course of the trial,one case fell off in the observation group and 2 cases fell off in the control group,and eventually 100 children in each group were included in the trial.(2)After 7 days of treatment,the total effective rate of the observation group was 93.00%(93/100),and that of the control group was 88.00%(88/100),and the intergroup comparison showed that the therapeutic effect of the observation group was superior to that of the control group,but the difference was not statistically significant(χ2= 1.454,P = 0.228).(3)After treatment,the scores of primary symptoms and secondary symptoms as well as the total TCM syndrome scores in the two groups were decreased compared with those before treatment(P<0.05),and the decrease in the observation group was significantly superior to that in the control group(P<0.01).(4)After treatment,the time for the resolution of clinical symptoms such as fever,cough,expectoration and sore throat in the observation group was significantly shorter than that in the control group(P<0.01).(5)After treatment,the levels of immunological indicators of T lymphocyte subset CD3+ and CD4+ in the two groups were increased compared with those before treatment(P<0.05),and the levels of CD8+ and B cells were decreased compared with those before treatment(P<0.05).The intergroup comparison showed that the increase in the levels of CD3+ and CD4+ as well as the decrease in the levels of CD8+ and B cells of the observation group was significantly superior to that of the control group(P<0.01).(6)After treatment,the levels of inflammatory factors of serum amyloid A(SAA),C-reactive protein(CRP),serum tumor necrosis factor alpha(TNF-α),soluble interleukin 2 receptor(SIL-2R),and interleukin 6(IL-6)in the two groups were significantly decreased compared with those before treatment(P<0.05),and the levels of interleukin 2(IL-2)and interferon γ(IFN-γ)ls were all significantly increased compared with those before treatment(P<0.05).The intergroup comparison showed that the decrease of serum SAA,CRP,TNF-α,SIL-2R,and IL-6 levels and the increase of serum IL-2 and IFN-γ levels in the observation group were significantly superior to those in the control group(P<0.01).(7)The incidence of adverse reactions in the observation group was 2.00%(2/100),which was significantly lower than that of 8.00%(8/100)in the control group,but the difference was not statistically significant(χ2 = 3.789,P = 0.052).Conclusion Fuzheng Hejie Prescription exerts certain effect in treating children with respiratory viral infection of H1N1 virus,which can effectively decrease children's TCM syndrome scores,regulate the inflammatory response,improve the immune function,accelerate the relief of clinical symptoms and shorten the course of the disease.
		                        		
		                        		
		                        		
		                        	
9.Severity of loneliness and factors associated with social and emotional loneliness among the elderly in three districts in Shanghai
Yu-Wen ZHANG ; Ying WANG ; Zhao-Hua XIN ; Jia-Lie FANG ; Rui SONG ; Hao-Cen LI ; Jia-Wen KUANG ; Yu-Ting YANG ; Jing-Yi WANG
Fudan University Journal of Medical Sciences 2024;51(1):1-11
		                        		
		                        			
		                        			Objective To explore the severity of loneliness among the elderly in communities in Shanghai,and to identify factors associated with social and emotional loneliness respectively.Methods A cross-sectional study was conducted in older adults aged 65 years or above in Pudong New Area,Jing'an District and Huangpu District in Shanghai from Mar to Jun 2021.In Pudong New Area,multi-stage stratified random sampling was conducted based on the age and gender distribution of Shanghai,while in Huangpu District and Jing'an District convenience sampling was conducted.A total of 635 samples were included in the study.Loneliness was assessed using the De Jong Gierveld Loneliness Scale with social and emotional loneliness subscales.Logistic regression analyses were conducted to identify factors associated with social and emotional loneliness.Results Among the 635 participants,only 53 older adults(8.4%)were not lonely.Female(OR=0.46,95%CI:0.31-0.70),higher self-efficacy(OR=0.97,95%CI:0.94-1.00),more objective social support(OR=0.96,95%CI:0.93-0.99)were associated with less severe social loneliness.Meanwhile,higher level of education(secondary education,OR=0.56,95%CI:0.34-0.95;college or above,OR=0.30,95%CI:0.11-0.83)and higher self-efficacy(OR=0.96,95%CI:0.93-0.99)were associated with less severe emotional loneliness,while depression(OR=3.41,95%CI:1.76-6.60)and worse social capital(OR=2.02,95%CI:1.29-3.16)were associated with more severe emotional loneliness.Conclusion Up to 91.6%of the elderly in our study sample were moderately lonely or above.The factors associated with social loneliness include self-efficacy,gender and social support.The factors associated with emotional loneliness are self-efficacy,education level,depression,and social capital.
		                        		
		                        		
		                        		
		                        	
10.The application value of spectral CT venography in the display and staging of deep venous thrombosis in the lower extremity
Shigeng WANG ; Yijun LIU ; Xin FANG ; Beibei LI ; Xu WANG ; Zhiming MA ; Xiaoyu TONG ; Yong FAN ; Wei WEI ; Anliang CHEN
Journal of Practical Radiology 2024;40(3):478-482
		                        		
		                        			
		                        			Objective To investigate the application value of spectral computed tomography venography(CTV)in the display and staging of deep venous thrombosis(DVT)in the lower extremity.Methods Eighty-two patients with CTV were selected and ran-domly divided into group A(42 patients)and group B(40 patients).Group A:tube voltage 120 kVp.Group B:gemstone spectral ima-ging(GSI)mode,reconstruction of 50 keV and iodine(water)maps.The CT and standard deviation(SD)values of the veins were measured,signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were calculated in 120 kVp images of group A and in 50 keV images of group B.Two observers scored the image quality of the 2 groups subjectively,and Kappa test was used to examine the con-sistency.Based on the duration from the occurrence of clinical symptoms,the DVTs were classified.The CT values and iodine con-centration(IC)of DVT were measured in the 120 kVp images of group A and in the iodine(water)maps of group B,respectively.The receiver operating characteristic(ROC)curve was drawn to compare the effectiveness of CT values and IC in diagnosing DVT staging.Results CT values,SNR,and CNR of veins in group B were higher than those in group A(P<0.05).The subjective scores of the two groups were consistent(Kappa=0.926-0.955,P<0.05).The score for the display of veins and thrombus clarity in group B was 5(4,5),which was better than the score of 4(3,4)in group A(P<0.05).The efficiency of IC in diagnosing DVT staging[area under the curve(AUC)=0.973]was better than that of CT values(AUC=0.891).Conclusion The spectral CTV can improve the contrast of lower extremity deep veins and the clarity of thrombus,and can provide more objective indicators for the diagnosis of thrombus staging,which is conducive to accurate clinical diagnosis and treatment.
		                        		
		                        		
		                        		
		                        	
            

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