1.Analysis of thyroid cancer incidence trends in Wujiang District, Suzhou City, Jiangsu Province, 2008‒2022
Jianxiong SUN ; Guoqin JIANG ; Siyi GU
Shanghai Journal of Preventive Medicine 2025;37(2):145-147
ObjectiveTo investigate the incidence and trends of thyroid cancer in Wujiang District, Suzhou City, Jiangsu Province, from 2008 to 2022, and to provide a scientific evidence for the prevention and control of thyroid cancer. MethodsData on thyroid cancer incidence from 2008 to 2022 were collected from the Wujiang District Cancer Registry System. The data were stratified by year of diagnosis and age group, and indicators such as crude incidence rate, standardized incidence rate (SIR), age-specific incidence rate, and the average annual percentage change (AAPC) were calculated. ResultsBetween 2008 and 2022, a total of 2 244 new cases of thyroid cancer reported in Wujiang District. The overall crude incidence rate was 18.07/100 000, and the SIR was 16.02/100 000, with AAPCs of 28.30% and 30.59%, respectively. Among males, 543 new cases were reported, with a crude incidence rate of 8.88/100 000, a SIR of 7.98/100 000, and AAPCs of 24.99% and 28.19%, respectively. Among females, 1 701 new cases were reported, with a crude incidence rate of 27.00/100 000, a SIR of 23.80/100 000, and AAPCs of 30.06% and 31.97%, respectively. Both crude and standardized incidence rates increased significantly for the overall population as well as for males and females (P<0.05). The number and rates of age-specific incidences increased with age up to 55 years, peaking between 50 and <55 years. ConclusionThe incidence rate of thyroid cancer in Wujiang District is rapidly increasing. It is necessary to strengthen the prevention and control of thyroid cancer, especially among females, to mitigate the rapid increase in the incidence rate of thyroid cancer.
2.Comparative analysis on elderly-friendly management of drug instructions in China,the United States and Japan
Siyi WANG ; Xiaoyong YU ; Jiayuan JIANG ; Kan TIAN
China Pharmacy 2025;36(9):1030-1034
OBJECTIVE To compare the measures taken by China, the U.S. and Japan to adapt drug instructions to aging, and provide reference for the reform of elderly-friendly drug instructions in China. METHODS The relevant documents published by the official websites of National Medical Products Administration of China, the U.S. FDA, and Pharmaceuticals and Medical Devices Agency of Japan, were consulted. Additionally, relevant literature from comprehensive databases such as CNKI, Wanfang data, and Web of Science, as well as search engines, was reviewed to understand the measures taken by the above countries in elderly-friendly management process of drug instructions. The comparative analysis was conducted for elderly-friendly adaptations of drug instructions in China, the U.S. and Japan, and the suggestions were put forward for the reform of elderly-friendly drug instructions in China. RESULTS & CONCLUSIONS The measures taken by China, the U. S., and Japan in the process of elderly- friendly management of drug labels had different emphases: China adopted large fonts and simplified drug instructions to alleviate the problem of the elderly being unable to read and understand drug instructions; the U.S. had set up a special section for the elderly in the drug instructions for special populations and issued the principles for writing information on medications for the elderly. The U. S. and Japan had established a classification management system for patient instructions and professional instructions, promoted structured electronic instructions, and built a unified electronic instructions platform. It is recommended that China incorporate elderly-specific medication information into the writing requirements of drug instructions, improve specific measures to encourage the reform of drug instructions suitable for the elderly, improve the accessibility and readability of electronic drug instructions, and build a drug instruction information disclosure platform to better ensure the safety of medication for the elderly.
3.Treatment of Asthenospermia and Infertility with Liver Constraint and Kidney Deficiency in 45 Cases by Shugan Bushen Yulin Decoction (疏肝补肾毓麟汤) and Vitamin E Soft Capsules: A Multicenter Randomized Controlled Trial
Wang WANG ; Jigang CAO ; Min XIAO ; Yangyang ZHU ; Mengjie GAO ; Qikai WANG ; Xiaocui JIANG ; Heng HAO ; Siyi CHEN
Journal of Traditional Chinese Medicine 2024;65(18):1909-1914
ObjectiveTo observe the clinical efficacy and safety of Shugan Bushen Yulin Decoction (疏肝补肾毓麟汤, SBYD) in the treatment of asthenospermia and infertility with liver constraint and kidney deficiency. MethodsA multicenter, randomized, controlled clinical study was conducted in three hospitals in central China. Totally 95 patients with asthenospermia and infertility were controlled. According to random number table, the patients were divided into treatment group (47 cases) and control group (48 cases). The control group was given vitamin E soft capsules (100 mg per time, twice daily) orally, and the treatment group was given SBYD (one dose daily, 30 min after breakfast and dinner, about 200 ml each time) orally. The course of treatment was 12 weeks in both groups. After the treatment, the sperm concentration, percentage of forward motile sperm (PR), and percentage of total sperm activity, that is PR + percentage of non-progressively motile sperm (NP) were compared between groups, and the clinical efficacy was judged. Traditional Chinese medicine (TCM) syndrome score (inlcuding 6 single symptom scores and total symptoms score) and 21-item depression, anxiety, and stress scale (DASS-21) scores (including depression, anxiety and stress scores) were compared between the two groups before and after treatment. The patients were followed up for 6 months, and the pregnancy status of spouse between groups was compared. The occurrence of adverse events and vital signs during the trial were recorded for safety assessment. ResultsTwo cases in the treatment group and three cases in the control group dropped out. Finally, 45 cases in each group were included in the statistical analysis. The total effective rate was 86.67% (39/45) in the treatment group, significantly higher than 73.74% (33/45) in the control group (P<0.05). After treatment, PR and PR + NP significantly increased in both groups, and were much higher in the treatment group than in the control group (P<0.05). The scores of lumbar and knee soreness, emotional disturbance, cold sperm, chest and rib-side and lesser abdomen distension and pain, frequent sighing, and the total TCM syndrome score in the treatment group decreased after treatment (P<0.05); and except for cold sperm, the scores of other symptoms mentioned above as well as the total TCM syndrome score in the treatment group were lower than those in the control group (P<0.05). The scores of depression, anxiety and stress of DASS-21 in the treatment group decreased after treatment, and were lower than those in the control group (P<0.05). After 6 months of follow-up, the spouses of 5 patients in the treatment group and 3 patients in the control group got pregnant (P>0.05). No adverse events occurred in both groups during the treatment, and their vital signs were stable. ConclusionSBYD can obviously improve sperm vitality and effectively improve the clinical symptoms, anxiety and depression, and is safe in treating asthenospermia and infertility with liver constraint and kidney deficiency.
4.Willingness to preventive treatments and related factors among college freshmen with latent tuberculosis infection in Changzhou
Chinese Journal of School Health 2024;45(12):1802-1806
Objective:
To investigate the willingness to accept preventive treatments and its related factors among college freshmen with latent tuberculosis infection (LTBI), so as to provide the evidence for preventive treatment intervention measures for students with LTBI.
Methods:
Cluster sampling method was used to select 368 LTBI freshmen from 8 colleges and universities in Changzhou in September 2023, who conducted a questionnaire survey on the willingness to receive preventive treatment. General demographic data were collected and relevant data were collected using tuberculosis knowledge scale, General Anxiety Disorder-7 (GAD-7), Patient Health Questionnaire-9 (PHQ-9), Adaptation, Partnership, Growth, Affection and Resolve (APGAR), and a self developed Stigma Scale. A binary Logistic regression model was constructed with the willingness to accept preventive treatment as the dependent variable to analyze the willingness to accept preventive treatment and the influencing factors.
Results:
A total of 253 LTBI college freshmen were willing to take preventive treatment, the acceptance rate was 68.75%. The rate of willingness to accept preventive treatment for LTBI was higher among students whose fathers had an education level of high school, compared to those whose fathers had an education level of junior high school or below ( OR =2.16, P <0.05). LTBI students whose per capita family income was >5 000-10 000 yuan and >10 000 yuan were more willing to accept LTBI preventive treatment than those whose per capita family income was <3 000 yuan ( OR =2.72, 4.46, P <0.05). LTBI students who engaged in physical exercise for more than 2 hours per week were more willing to accept than those who exercised less than 0.5 hours per week ( OR =1.91, P <0.05). LTBI students with high levels of tuberculosis knowledge and stigma were more likely to receive preventive treatment ( OR =1.18, 1.11, P < 0.05). LTBI students with high PHQ-9 ( OR =0.85) and GAD-7 ( OR =0.92) scores were more likely to refuse preventive treatment ( P <0.05).
Conclusion
The present study revealed a moderate level of willingness of LTBI students to preventive treatment in Changzhou City, and the acceptance is affected by family factors, healthy lifestyles, tuberculosis knowledge and psychological status.
5.Youguiwan Reduces Airway Inflammation in COPD Rats with Syndrome of Kidney-Yang Deficiency by Inhibiting Leptin/JAK2/STAT3 Signaling Pathway
Lan ZHENG ; Zeyuan LUO ; Min XIAO ; Xiaocui JIANG ; Yuhao MENG ; Siyi CHEN ; Jing ZHOU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(14):17-26
ObjectiveTo observe the effect of Youguiwan on the leptin/Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) signaling pathway in the lung tissue of the rat model of chronic obstructive pulmonary disease (COPD) due to kidney-Yang deficiency. MethodForty rats were modeled for COPD with the syndrome of kidney-Yang deficiency by intratracheal instillation of lipopolysaccharide on day 1 and day 14 and continuous fumigation for 6 weeks, during which hydrocortisone was injected intramuscularly at an interval of 3 days. The modeled rats were randomized into model, high- (11.7 g·kg-1), medium- (5.85 g·kg-1), and low-dose (2.93 g·kg-1) Youguiwan, and aminophylline (0.054 g·kg-1) group. In addition, 8 SD rats were set as the blank group. After the completion of modeling, the rats in each group were administrated with the corresponding drug by gavage for 28 consecutive days. After the last administration, samples were collected. A lung function analyzer was used to evaluate the lung function of rats. Enzyme-linked immunosorbent assay was employed to measure the levels of interleukin-17A (IL-17A), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) in the bronchoalveolar lavage fluid (BALF). Hematoxylin-eosin staining was employed to observe the pathological changes in the lung tissue, and Masson staining was employed to observe the deposition of blue collagen fibers around bronchi in the lung tissue and calculate the inflammation score. The immunofluorescence assay was employed to measure the protein content of collagen type Ⅰ (ColⅠ) and α-smooth muscle actin (α-SMA) in the bronchi. The protein and mRNA levels of leptin, IL-17A, JAK2, and STAT3 in the lung tissue were determined by Western blot and real-time fluorescence quantitative polymerase chain reaction, respectively. ResultCompared with the blank group, the model group showed decreased lung function (P<0.01), elevated levels of IL-6, IL-17A, and TNF-α in the BALF (P<0.01), and increased lung inflammation score, deposition of subcutaneous collagen fibers in the airway, and ColⅠ and α-SMA proteins (P<0.01). Furthermore, the modeling up-regulated the proteins and mRNA levels of leptin, IL-17A, JAK2, and STAT3 in the lung tissue (P<0.01) and enhanced the phosphorylation of JAK2 and STAT3 (P<0.01). Compared with the model group, high- and medium-dose Youguiwan improved the lung function, decreased the inflammation score, reduced collagen fiber deposition and ColⅠ and α-SMA proteins, lowered the levels of IL-6, IL-17A, and TNF-α in the BALF, down-regulated the mRNA and protein levels of leptin, JAK2, STAT3, and IL-17A, and weakened the phosphorylation of JAK2 and STAT3 (P<0.05, P<0.01). The aminophylline group had higher IL-17A and TNF-α levels than the high-dose Youguiwan group, lower IL-17A level than the medium and low-dose Youguiwan groups, and lower TNF-α level than the low-dose Youguiwan group. Compared with the aminophylline group, the high- and medium-dose Youguiwan groups showed reduced deposition of collagen fibers and protein levels of ColⅠ and α-SMA around the bronchi in the lung tissue (P<0.05, P<0.01), decreased inflammation score, and down-regulated protein and mRNA levels of leptin, JAK2, STAT3, and IL-17A in the lung tissue. ConclusionYouguiwan can prevent airway remodeling by inhibiting IL-17A to reduce inflammation and collagen deposition in COPD rats, which may be related to the inhibition of the leptin/JAK2/STAT3 signaling pathway.
6.Zuoguiwan Prevent Decreased Ovarian Reserve in Prenatal Stressed Offspring Rats via TLR4/NF-κB p65 Signaling Pathway
Yinjuan LYU ; Weiheng ZHANG ; Siyi CHEN ; Wenjing TIAN ; Jian GONG ; Yuhao MENG ; Huan HE ; Xiaocui JIANG ; Min ZHAO ; Min XIAO
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(17):67-76
ObjectiveTo observe the effect of Zuoguiwan on ovarian reserve in the female offspring rat model of prenatal stress (PS) and explore the mechanism based on Toll-like receptor 4/nuclear factor-κB p65 (TLR4/NF-κB p65) signaling pathway. MethodThirty-two pregnant rats were prepared and randomized into four groups (n=8): control, model, Zuoguiwan (18.9 mg·kg-1), and vitamin E (1.44 mg·kg-1). Except the control group, the other three groups were subjected to chronic unpredictable mild stress (CUMS) from day 11 of pregnancy, and the modeling was accompanied by gavage with corresponding drugs until delivery. The PS model was evaluated by the sucrose preference test, open field test, and serum corticosterone (CORT) level. The estrous cycle was monitored and the morphological changes in the ovarian tissue were observed. The serum levels of estradiol (E2), luteinizing hormone (LH), follicle-stimulating hormone (FSH), and anti-Mullerian hormone (AMH) in the 75-day-old offspring rats were measured by enzyme-linked immunosorbent assay (ELISA) to evaluate the ovarian reserve. The ovary and uterus indices were calculated. The serum levels of interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) were measured by enzyme-linked immunosorbent assay (ELISA). The morphology of the ovarian tissue in the offspring on the day of birth and day 75 after birth was observed by hematoxylin-eosin staining. The transport of NF-κB p65 to the nucleus in the ovaries of the 75-day-old offspring was detected by the immunofluorescence (IF) assay. The expression of TLR4, NF-κB p65 and other related proteins in the ovarian tissue was determined by Western blot. ResultCompared with the control group, the model group showed reduced primordial follicles in the offspring on the day of birth (P<0.01) as well as disturbed estrous cycle, decreased ovary index and uterus index (P<0.01), reduced corpus luteum, increased atretic follicles (P<0.01), lowered serum levels of AMH and E2 (P<0.01), elevated serum levels of LH, FSH, IL-1β, and TNF-α (P<0.05, P<0.01), and up-regulated protein levels of TLR4, NF-κB p65, recombinant myeloid differentiation factor 88 (MyD88), and phosphorylated NF-κB inhibitor (p-IκBα) (P<0.01) in the 75-day-old offspring rats. Compared with the model group, Zuoguiwan and vitamin E increased the primordial follicles in the offspring on the day of birth (P<0.01). Moreover, they resumed the estrous cycle, increased the ovary and uterine indices (P<0.05, P<0.01) and corpus luteum (P<0.01), reduced atretic follicles (P<0.01), elevated the serum levels of AMH and E2 (P<0.05, P<0.01), lowered the serum levels of LH, FSH, IL-1β, and TNF-α (P<0.05, P<0.01), and down-regulated the expression of TLR4, NF-κB p65, MyD88, and p-IκB-α (P<0.05, P<0.01) in the 75-day-old offspring. ConclusionZuoguiwan can improve the ovarian reserve in the offspring rat model of congenital kidney deficiency by regulating the TLR4/NF-κB p65 signaling pathway.
7.Evaluation of the effectiveness of Cariostat test on caries activity in adult patients
Chengyue BIAN ; Zhuo GUAN ; Siyi SUN ; Chuang CUI ; Fei JIANG ; Guangdong ZHANG
STOMATOLOGY 2024;44(7):522-526
Objective To investigate the feasibility of using Cariostat test for caries risk assessment in adult outpatients and provide a reference basis for caries prevention and treatment in adult outpatients of different ages.Methods Fifty-two adult patients of different ages(18-24,25-34,35-44,45-54,and≥55 years old)attending outpatient clinics of The Affiliated Stomatological Hospital of Nanjing Medical University were tested for caries activity using the Cariostat test.Oral examinations were conducted according to the criteria of the 5th edition of the Basic Methods of Oral Health Surveys of the World Health Organization,and on-site questionnaire sur-veys were performed for the Cariogram assessment system.Oral examinations included assessments of dental arch conditions and caries status,while questionnaire surveys covered dietary habits,oral health care habits,etc.The caries status of adult outpatients of different age groups was analyzed,and caries activity was assessed using the Cariostat test.The caries risk levels were determined,and the con-sistency between the Cariostat test and the Cariogram assessment system was evaluated.Results It was found that there was a differ-ence in mean decayed,missing and filled surfaces(DMFS)between the low-risk group of adult outpatients with different caries risk levels classed by the Cariostat test and the intermediate and high-risk groups(P<0.05).There was a difference in mean decayed,missing and filled teeth(DMFT)and mean DMFS between the low-risk group of adult outpatients with different caries risk levels classed by Cariogram and the intermediate and high-risk groups(P<0.05).The evaluation results of caries risk levels in adult outpa-tients classed by the Cariostat test and the Cariogram assessment system showed a Kappa value of 0.467(P<0.05)in the≥55 years old group,indicating moderate consistency.Conclusion The Cariostat test is useful in understanding the caries activity of adult outpa-tients and is particularly accurate and effective in patients at the age of 55 or older.
8.HO1 inhibits ROS production and inflammatory response following RSV infection
Zhenghong JIANG ; Siyi CHE ; Enmei LIU ; Jun XIE
Immunological Journal 2024;40(3):242-249
This study aims to investigate the role and specific mechanisms of HO1 in mitigating lung inflammation after RSV infection.An RSV-infected mouse model was established,and lung tissues were collected for RNA-seq and differential gene expression analysis.HE staining and BALF cell counting were used to observe inflammation in the mouse lung tissues.Changes in HO1 expression were detected through immunohistochemistry,Western blotting,and qRT-PCR;inflammatory cytokine levels were assessed using qRT-PCR.HEMIN target proteins were predicted and analyzed by underwent GO and KEGG enrichment test;ROS levels in alveolar epithelial cells were measured using flow cytometry and immunofluorescence.Lysosomal changes were observed using transmission electron microscopy.The results demonstrated that HO1 expression was upregulated in the lung tissues of RSV-infected mice.Inducing HO1 expression alleviated lung tissue pathology,and lowered inflammatory cytokines IL-6 and TNF-α levels.RSV infection promoted ROS release and accumulation in lung epithelial cells,leading to an increase in autolysosomes.The induction of HO1 expression facilitated ROS clearance and reduced the number of autolysosomes.Therefore,the protective effect of HO 1 against oxidative stress reduces intracellular ROS generation,maintains organelle homeostasis,and reducing inflammatory cytokine IL-6,IL-8 and CXCL-10 levels.
9.Clinical and imaging study on prognostic factors influencing the repair of posterior supremal giant rotator cuff tear
Siyi GUO ; Yiming ZHU ; Yi LU ; Pu ZHANG ; Tong ZHENG ; Qihuang QIN ; Chunyan JIANG
Chinese Journal of Orthopaedics 2024;44(14):979-986
Objective:To assess the feasibility of using the posterosuperior tetralogy (PS-Tetra) score for predicting the prognosis of repair of posterosuperior massive rotator cuff tears.Methods:Data were retrospectively reviewed for patients who underwent repair of posterosuperior massive rotator cuff tears from February 2016 to June 2020. A total of 95 (male 48, female 47) shoulders with an average age of 58.52±8.33 years (range, 27-76 years) were included. The American Shoulder and Elbow Surgeons (ASES) scores and shoulder range of motions (ROM) were used to evaluate shoulder function. MRI was used to assess preoperative fatty infiltration (FI), atrophy, modified Patte's classification, PS-Tetra score and postoperative tendon integrity. The shoulder function was compared between groups of different PS-Tetra scores. The binary logistic regression was used to determine the risk factors of irreparability and retear.Results:83 cases of repair of posterosuperior massive rotator cuff tears were finally included. Complete repairs were performed in 83 cases, and partial repairs were performed in 12 cases. Retear was observed in 17 (20%) cases. The ASES scores (postoperative 58.52±8.33 vs. preoperative 47.30±17.40, t=-19.642, P<0.001), ROM of forward flexion (postoperative 157.60°±13.85° vs. preoperative 116.88°±50.89°, t=-7.272, P<0.001), external rotation (postoperative 45.26°±14.69° vs. preoperative 37.34°±18.65°, t=-4.043, P<0.001) and internal rotation [postoperative L 1 (T 7-buttock) vs. preoperative L 2 (T 7-buttock), Z=-2.737, P=0.006] were significantly improved postoperatively in the group with PS-Tetra score between 0 and 2. In the group with PS-Tetra score of 3 and 4, the ASES scores (postoperative 69.17±15.91 vs. preoperative 46.85±20.73, t=-11.167, P=0.001) were significantly improved postoperatively, while the ROMs were not. Modified Patte stageⅢ[ OR=26.827, 95% CI (2.089, 344.500), P=0.012] was the risk factor of irreparability. Dominant side involvement [ OR=9.407, 95% CI (1.044, 84.784), P=0.046) and PS-Tetra score of 3 and 4 [ OR=5.037, 95% CI (1.028, 26.623), P=0.046] were risk factors of retear. Conclusions:For repair of posterosuperior massive rotator cuff tears, preoperative PS-Tetra score of 3 and 4 was the risk factors of poor postoperative shoulder functions and retear.
10.The clinical value of spectral CT combined with orthopedic metal artifact reduction technology in reducing artifacts from contrast media in enhanced chest CT of breast cancer patients
Xinyi ZHANG ; Siyi JIANG ; Daqin LI ; Zhenlin LI ; Fan YANG ; Yong CHENG ; Xiaomu ZHU ; Xuelin PAN
Chinese Journal of Radiology 2023;57(12):1353-1360
Objective:To access the efficacy of monoenergetic imaging from spectral CT combined with metal artifact reduction for orthopedic implants (O-MAR) on reducing contrast hardening artifacts in the vein on the injection side, and determining the optimal monoenergetic spectral range to improve the display of axillary lymph node.Methods:A total of 35 patients with breast cancer who underwent chest-enhanced CT scans were enrolled in this retrospective study. The original data were reconstructed to obtain a total of 35 sets of images, including one conventional image, 17 groups of monoenergetic images, and 17 groups of monoenergetic+O-MAR images. The areas of interest were delineated in the high and low-density artifact area on the injection side of the same layer contrast agent, and the contralateral ectopectoralis. The CT value and its standard deviation (SD) were recorded respectively, the artifact area was measured, and the number of axillary lymph nodes was recorded. The difference in CT values (ΔCT 1, ΔCT 2) and the artifact index (AI1 and AI 2) of the high and low-density artifact areas relative to the contralateral ectopectoralis in the same layer were calculated respectively. Friedman test and Wilcoxon signed-rank test were used to compare the differences of ΔCT, AI, artifact area, and number of lymph nodes among the three imaging modalities, and the Kappa test was used to compare the differences in subjective evaluation. Results:As the energy level increased, compared to the conventional image, monoenergetic image, ΔCT 1 absolute value, ΔCT 2 absolute value, AI 1, and AI 2 showed a trend of initially low and then high, artifact area decreased, and the number of detected lymph nodes increased ( P<0.01). Compared to other energy levels, when the monoenergetic image was 100 keV, ΔCT 1 value, 140 keV for ΔCT 2 value, 120 keV for AI 1 value, and 130 keV for AI 2 value were close to zero, and the number of detected lymph nodes was highest at 110-200 keV. In contrast, in the monoenergetic+O-MAR images, ΔCT 1 absolute value showed a trend of initially low and then high, but, ΔCT 2 absolute value, AI 1, AI 2, and artifact area all significantly decreased, whereas the number of detected lymph nodes significantly increased (χ 2 values were 916.23, 895.93, 387.08, 519.41, 890.10, and 1027.98, respectively. All P<0.01). Compared to other energy levels, when the monoenergetic+O-MAR image was at 100 keV, ΔCT 1 value was close to zero, while ΔCT 2 value became close to zero with increasing energy level, and the number of detected lymph nodes was highest at 110-200 keV. As the energy level increased, the ΔCT 1, AI 1, AI 2, and artifact area of monoenergetic+O-MAR images were significantly smaller than those of monoenergetic images at the same energy level, and the number of detected lymph nodes was significantly higher than that of monoenergetic images ( P<0.01). The subjective scores for 110-200 keV monoenergetic images and 100-200 keV monoenergetic+O-MAR images were both higher than 4, and the score for monoenergetic+O-MAR images was significantly higher than that of single-energy spectrum images. The agreement between the two radiologists in assessing subjective scores was good. Conclusion:At 100-120 keV level, spectral CT monoenergetic combined with O-MAR imaging technique has the best performance in removing hardening-induced artifacts of chest-enhanced CT contrast agent and detecting and displaying axillary lymph nodes.


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