Objective:To evaluate the risk of developing pulmonary tuberculosis (PTB) among individuals with latent tuberculosis infection (LTBI) in schools and the protective effect of tuberculosis preventive treatment (TPT).Methods:A retrospective cohort study was conducted to collect data on 15 school outbreaks that occurred in Guangdong Province from 2017 to 2021. Baseline information on tuberculin skin test (TST) or interferon-gamma release test (IGRA) was obtained during contact surveys, as well as baseline information such as TPT. The incidence of PTB between 2017 and 2022 was queried using the Chinese Center for Disease Control and Prevention Information System. Poisson regression analysis was used to compare the incidence risk of PTB in the LTBI population under different TST states at baseline. Current cases, new cases and all cases (the sum of the two) were used as dependent variables. Cox regression models were used to analyze various risk factors affecting the risk of PTB in the LTBI population and evaluate the protective effect of TPT.Results:A total of 6 550 contacts were included in this study, of which 409 received TPT. Within 0-3 months after baseline survey, 119 cases were diagnosed as current cases [19.4‰, 119/(6 550-409)]. A total of 17 221.65 person-years of follow-up were conducted, during which 71 new cases were diagnosed (4.1/1 000 person-years, 71/17 221.65). The incidence density of PTB was 47.7/1 000 person-years, 6.6/1 000 person-years, 1.4/1 000 person-years, and 0.9/1 000 person-years, respectively, in TST strong/IGRA positive, TST moderate positive, TST generally positive, and TST and IGRA negative populations. The difference in PTB incidence density was statistically significant [likelihood ratio test LRT=153.16, P<0.001]. TPT was performed for individuals with strong TST or IGRA positivity, and the protection rate could reach 93% ( HR=0.07, 95% CI: 0.02-0.23). Conclusion:After the outbreak of the school epidemic, individuals with strong TST/IGRA positivity have a higher risk of developing PTB in the future. Targeted implementation of TPT can achieve better protection effects. In addition, the risk of developing PTB in individuals with moderate TST positivity is also worth noting.

Objective:To investigate the dose characteristics of the Zeiss INTRABEAM system in air and water, providing dose reference for electronic brachytherapy.Methods:A Monte Carlo program was used to establish a three-dimensional model of a miniature X-ray source vacuum drift tube and a 4 cm spherical applicator. The process of electron beam bombardment on a gold target to generate X-rays was simulated, and parameters such as photon fluence spectrum, percentage depth dose, and half-value layer were calculated. Additionally, the radial dose uniformity in water was measured.Results:The average energy of X-rays at 3 cm in air was 20.8 keV, with a half-value layer of 0.08 mm Al. Under the influence of the applicator, the spectrum becomes hardened, with axial and radial average energies of 28.7 and 29.0 keV, respectively. In water, the percentage depth dose (PDD) curve follows an inverse cubic decay with depth, indicating strong dose concentration and rapid fall-off in near-field irradiation. The radial dose uniformity in water exceeded 99.5%.Conclusions:The INTRABEAM device emits low-energy X-rays characterized by shallow penetration depth, and concentrated dose delivery. Its highly uniform dose distribution ensures comprehensive coverage of the target area, making it particularly suitable for treating superficial tumors and for intraoperative radiotherapy at close range.

Objective:To evaluate the risk of developing pulmonary tuberculosis (PTB) among individuals with latent tuberculosis infection (LTBI) in schools and the protective effect of tuberculosis preventive treatment (TPT).Methods:A retrospective cohort study was conducted to collect data on 15 school outbreaks that occurred in Guangdong Province from 2017 to 2021. Baseline information on tuberculin skin test (TST) or interferon-gamma release test (IGRA) was obtained during contact surveys, as well as baseline information such as TPT. The incidence of PTB between 2017 and 2022 was queried using the Chinese Center for Disease Control and Prevention Information System. Poisson regression analysis was used to compare the incidence risk of PTB in the LTBI population under different TST states at baseline. Current cases, new cases and all cases (the sum of the two) were used as dependent variables. Cox regression models were used to analyze various risk factors affecting the risk of PTB in the LTBI population and evaluate the protective effect of TPT.Results:A total of 6 550 contacts were included in this study, of which 409 received TPT. Within 0-3 months after baseline survey, 119 cases were diagnosed as current cases [19.4‰, 119/(6 550-409)]. A total of 17 221.65 person-years of follow-up were conducted, during which 71 new cases were diagnosed (4.1/1 000 person-years, 71/17 221.65). The incidence density of PTB was 47.7/1 000 person-years, 6.6/1 000 person-years, 1.4/1 000 person-years, and 0.9/1 000 person-years, respectively, in TST strong/IGRA positive, TST moderate positive, TST generally positive, and TST and IGRA negative populations. The difference in PTB incidence density was statistically significant [likelihood ratio test LRT=153.16, P<0.001]. TPT was performed for individuals with strong TST or IGRA positivity, and the protection rate could reach 93% ( HR=0.07, 95% CI: 0.02-0.23). Conclusion:After the outbreak of the school epidemic, individuals with strong TST/IGRA positivity have a higher risk of developing PTB in the future. Targeted implementation of TPT can achieve better protection effects. In addition, the risk of developing PTB in individuals with moderate TST positivity is also worth noting.

Objective:To explore the clinical application value of optical navigation system（ONS）-guided sacral neuromodulation（SNM）electrode implantation for precise puncture.Methods:?This study was a randomized，controlled trial. Patients who underwent SNM electrode implantation at the Gongli Hospital，Pudong New Area，Shanghai，from February 2024 to March 2025 were included. Inclusion criteria：aged 18?80 years，meeting the indications recommended by the Chinese expert consensus on the clinical application of sacral neuromodulation or expanded applications，and having completed pelvic CT and MRI examinations to ensure image quality for navigation system use. Exclusion criteria：progressive neurological diseases，severe urinary tract infections，urinary tract obstruction，or other conditions that may affect surgical outcomes and safety. Patients were randomly divided into two groups using a random number table and a single-blind design was implemented. The two groups underwent different puncture guidance methods in the stage Ⅰ surgery，but other treatments and follow-up measures were consistent.The experimental group used ONS-guided puncture with preoperative pelvic CT and MRI scans for multimodal image fusion and 3D reconstruction and software-based puncture path planning for real-time intraoperative guidance. The control group used X-ray-guided cross-positioning，determining the S3 sacral foramen for puncture based on anatomical landmarks with a metal positioning ruler under fluoroscopy. The puncture path was planned using software to achieve real-time intraoperative guidance. Intraoperative indicators（number of punctures，puncture time，electrode contact points，minimum effective voltage，X-ray fluoroscopy time，radiation dose，total surgical time）and postoperative outcomes（complications，pain scores，stage Ⅱ permanent implantation rates）were compared between the two groups to assess the advantages and feasibility of ONS-guided sacral nerve electrode implantation.Results:?A total of 35 patients were included in each group. The experimental group had fewer intraoperative puncture attempts［2.0（2.0，3.0）vs. 5.0（4.0，7.0）］and shorter puncture procedure time［7.5（6.0，10.0）min vs. 14.0（12.0，18.0）min］，indicating more accurate and efficient ONS-guided puncture. There was no statistical difference in the number of electrode contact points between the two groups［3.0（3.0，4.0）vs. 3.0（3.5，3.8）， P = 0.374］，but the experimental group had a lower effective voltage［1.8（1.8，2.5）V vs. 2.5（1.8，3.0）V］and shorter stimulator adjustment time［10.0（8.0，12.0）min vs. 16.0（13.0，20.0）min］. The experimental group had shorter intraoperative X-ray fluoroscopy time［1.6（1.1，2.2）min vs. 4.6（3.8，6.0）min］，lower radiation dose［165.8（107.6，205.3）mGy vs. 427.4（325.1，636.5）mGy］，shorter total surgical time［52.0（49.0，57.8）min vs. 68.0（62.0，74.0）min］，less intraoperative blood loss［4.0（4.0，5.0）ml vs. 6.0（5.0，7.0）ml］，and a lower proportion of patients requiring supplemental local anesthesia［14.3%（5/35）vs. 40.0%（14/35）］. The postoperative wound infection rates were not statistically different between the two groups［0 vs. 2.9%（1/35）， P = 1.000］，but the experimental group had significantly lower pain scores on postoperative day 1［（1.9 ± 1.1）vs.（3.2 ± 1.4）］and a higher stage Ⅱ permanent implantation rate［85.7%（30/35）vs. 65.7%（23/35）］，with statistically significant differences（ P < 0.05）. Conclusions:?ONS-guided SNM electrode implantation reduces the number of puncture attempts，surgical time，and X-ray radiation，effectively lowers the effective voltage，and increases the stage Ⅱ permanent implantation rate.

Objective:To investigate influence of different phantoms on the results of quality control for the images of cone beam computed tomography(CBCT)for breast on the basis of quality control for breast CBCT.Methods:Five different manufacturers'phantoms were selected,and they were placed at the position of testing breast in clinical examination to conduct position for phantom according to the method of the national health industry standard WS 818-2023.The analysis focused on the differences of evaluation results of using different phantoms for image quality on the basis of a series of parameters included uniformity,resolution of high contrast,resolution of low contrast,and CT value of water in scanning images of different phantoms.Data collection and image reconstruction were performed respectively by using commonly clinical procedures.Corresponding module images were selected from the reconstructed images of standard breast phantom.The common layer thickness and projection method of the system were set to record and analyze data.Results:The image uniformity of measured results of the five phantoms were respectively 42.37±2.01,-5.83±0.15,3.76±0.15,2.16±0.06,3.60±0.10.The differences of the image uniformities among the five phantoms were statistically significant(F=1310.02,P<0.001),and the differences of the CT values of the measured water among the five phantoms were statistically significant(F=9 846.46,P<0.001).The differences in the resolution of low contrast among them were also statistically significant(F=27.50,P<0.001).However,the results of the resolution of high contrast were stability,and there was no significant difference in that among the five phantoms.Conclusion:The measured results of quality control of different phantoms are different.

Objective:To investigate influence of different phantoms on the results of quality control for the images of cone beam computed tomography(CBCT)for breast on the basis of quality control for breast CBCT.Methods:Five different manufacturers'phantoms were selected,and they were placed at the position of testing breast in clinical examination to conduct position for phantom according to the method of the national health industry standard WS 818-2023.The analysis focused on the differences of evaluation results of using different phantoms for image quality on the basis of a series of parameters included uniformity,resolution of high contrast,resolution of low contrast,and CT value of water in scanning images of different phantoms.Data collection and image reconstruction were performed respectively by using commonly clinical procedures.Corresponding module images were selected from the reconstructed images of standard breast phantom.The common layer thickness and projection method of the system were set to record and analyze data.Results:The image uniformity of measured results of the five phantoms were respectively 42.37±2.01,-5.83±0.15,3.76±0.15,2.16±0.06,3.60±0.10.The differences of the image uniformities among the five phantoms were statistically significant(F=1310.02,P<0.001),and the differences of the CT values of the measured water among the five phantoms were statistically significant(F=9 846.46,P<0.001).The differences in the resolution of low contrast among them were also statistically significant(F=27.50,P<0.001).However,the results of the resolution of high contrast were stability,and there was no significant difference in that among the five phantoms.Conclusion:The measured results of quality control of different phantoms are different.

Objective:To investigate the dose characteristics of the Zeiss INTRABEAM system in air and water, providing dose reference for electronic brachytherapy.Methods:A Monte Carlo program was used to establish a three-dimensional model of a miniature X-ray source vacuum drift tube and a 4 cm spherical applicator. The process of electron beam bombardment on a gold target to generate X-rays was simulated, and parameters such as photon fluence spectrum, percentage depth dose, and half-value layer were calculated. Additionally, the radial dose uniformity in water was measured.Results:The average energy of X-rays at 3 cm in air was 20.8 keV, with a half-value layer of 0.08 mm Al. Under the influence of the applicator, the spectrum becomes hardened, with axial and radial average energies of 28.7 and 29.0 keV, respectively. In water, the percentage depth dose (PDD) curve follows an inverse cubic decay with depth, indicating strong dose concentration and rapid fall-off in near-field irradiation. The radial dose uniformity in water exceeded 99.5%.Conclusions:The INTRABEAM device emits low-energy X-rays characterized by shallow penetration depth, and concentrated dose delivery. Its highly uniform dose distribution ensures comprehensive coverage of the target area, making it particularly suitable for treating superficial tumors and for intraoperative radiotherapy at close range.

Objective:To explore the clinical application value of optical navigation system（ONS）-guided sacral neuromodulation（SNM）electrode implantation for precise puncture.Methods:?This study was a randomized，controlled trial. Patients who underwent SNM electrode implantation at the Gongli Hospital，Pudong New Area，Shanghai，from February 2024 to March 2025 were included. Inclusion criteria：aged 18?80 years，meeting the indications recommended by the Chinese expert consensus on the clinical application of sacral neuromodulation or expanded applications，and having completed pelvic CT and MRI examinations to ensure image quality for navigation system use. Exclusion criteria：progressive neurological diseases，severe urinary tract infections，urinary tract obstruction，or other conditions that may affect surgical outcomes and safety. Patients were randomly divided into two groups using a random number table and a single-blind design was implemented. The two groups underwent different puncture guidance methods in the stage Ⅰ surgery，but other treatments and follow-up measures were consistent.The experimental group used ONS-guided puncture with preoperative pelvic CT and MRI scans for multimodal image fusion and 3D reconstruction and software-based puncture path planning for real-time intraoperative guidance. The control group used X-ray-guided cross-positioning，determining the S3 sacral foramen for puncture based on anatomical landmarks with a metal positioning ruler under fluoroscopy. The puncture path was planned using software to achieve real-time intraoperative guidance. Intraoperative indicators（number of punctures，puncture time，electrode contact points，minimum effective voltage，X-ray fluoroscopy time，radiation dose，total surgical time）and postoperative outcomes（complications，pain scores，stage Ⅱ permanent implantation rates）were compared between the two groups to assess the advantages and feasibility of ONS-guided sacral nerve electrode implantation.Results:?A total of 35 patients were included in each group. The experimental group had fewer intraoperative puncture attempts［2.0（2.0，3.0）vs. 5.0（4.0，7.0）］and shorter puncture procedure time［7.5（6.0，10.0）min vs. 14.0（12.0，18.0）min］，indicating more accurate and efficient ONS-guided puncture. There was no statistical difference in the number of electrode contact points between the two groups［3.0（3.0，4.0）vs. 3.0（3.5，3.8）， P = 0.374］，but the experimental group had a lower effective voltage［1.8（1.8，2.5）V vs. 2.5（1.8，3.0）V］and shorter stimulator adjustment time［10.0（8.0，12.0）min vs. 16.0（13.0，20.0）min］. The experimental group had shorter intraoperative X-ray fluoroscopy time［1.6（1.1，2.2）min vs. 4.6（3.8，6.0）min］，lower radiation dose［165.8（107.6，205.3）mGy vs. 427.4（325.1，636.5）mGy］，shorter total surgical time［52.0（49.0，57.8）min vs. 68.0（62.0，74.0）min］，less intraoperative blood loss［4.0（4.0，5.0）ml vs. 6.0（5.0，7.0）ml］，and a lower proportion of patients requiring supplemental local anesthesia［14.3%（5/35）vs. 40.0%（14/35）］. The postoperative wound infection rates were not statistically different between the two groups［0 vs. 2.9%（1/35）， P = 1.000］，but the experimental group had significantly lower pain scores on postoperative day 1［（1.9 ± 1.1）vs.（3.2 ± 1.4）］and a higher stage Ⅱ permanent implantation rate［85.7%（30/35）vs. 65.7%（23/35）］，with statistically significant differences（ P < 0.05）. Conclusions:?ONS-guided SNM electrode implantation reduces the number of puncture attempts，surgical time，and X-ray radiation，effectively lowers the effective voltage，and increases the stage Ⅱ permanent implantation rate.

Objective To analyze the efficacy of self-formulated Bushen Qianyang Decoction combined with alendronate sodium and vitamin D3 in treating osteoporosis(OP)and to observe its effect on bone metabolism and trimethylamine oxide(TMAO)-nuclear factor κB(NF-κB)/activated T nuclear factor c1(NFATc1)pathway.Methods A total of 102 cases of patients with OP of spleen and kidney yang deficiency type who admitted to Taizhou Hospital of Integrated Traditional Chinese and Western Medicine from January 2021 to January 2023 were randomly divided into an observation group and a western medicine group according to the random number table method,51 cases in each group.The western medicine group was treated with alendronate sodium and vitamin D,and the observation group was treated with self-formulated Bushen Qianyang Decoction on the basis of treatment for the western medicine group,and the course of treatment covered for 12 weeks.The changes of traditional Chinese medicine(TCM)syndrome score,Oswestry Disability Index(ODI)score,pain visual analogue scale(VAS)score,bone metabolism indicators,and levels of TMAO-NF-κB/NFATc1 pathway related factors before and after treatment in the two groups were observed.Moreover,the clinical efficacy and medication safety of the two groups were evaluated.Results(1)After 12 weeks of treatment,the total effective rate of the observation group was 96.08%(49/51),and that of the western medicine group was 78.43%(40/51).The intergroup comparison(tested by chi-square test)showed that the efficacy of the observation group was significantly superior to that of the western medicine group(P<0.01).(2)After treatment,the two groups presented the decreased scores of TCM symptoms such as cold pain in the lower back,soreness and fatigue,shortness of breath and reluctance to talk,vertigo and dizziness when compared with those before treatment(P<0.05),and the decrease of TCM syndrome scores in the observation group was significantly superior to that in the western medicine group(P<0.01).(3)After treatment,the ODI scores and pain VAS scores of patients in the two groups were decreased when compared with those before treatment(P<0.05),and the decrease in the observation group was significantly superior to that in the western medicine group(P<0.01).(4)After treatment,the serum osteocalcium(BGP)level in the two groups of patients was increased when compared with that before treatment(P<0.05),and the serum total procollagen type 1 intact N(amino)-terminal propeptide(PINP)and β-collagen degradation product(β-CTX)levels were decreased when compared with those before treatment(P<0.05),and the increase of the serum BGP level and the decrease of the serum PINP and β-CTX levels in the observation group were significantly superior to those in the western medicine group(P<0.01).(5)After treatment,the levels of serum TMAO,NF-κB,and NFATc1 in the two groups of patients were all decreased when compared with those before treatment(P<0.05),and the decrease of the above indicators in the observation group was significantly superior to that in the western medicine group(P<0.01).(6)The total incidence of adverse reactions in the observation group was 5.88%(3/51)and that in the western medicine group was 9.80%(5/51),and the intergroup comparison showed that the difference was not statistically significant between the two groups(P>0.05).Conclusion Self-formulated Bushen Qianyang Decoction combined with alendronate sodium and vitamin D3 exerts certain efficacy in treating OP patients with spleen and kidney yang deficiency type,which can effectively alleviate the symptoms such as cold pain in the lower back,alleviate the degree of dysfunction,improve bone metabolism,and inhibit the high-expressed TMAO,NF-κB,and NFATc1 in the serum.Moreover,the combined therapy does not cause serious adverse reactions,with high safety.

Objective To discuss the risk of complications occurring after CT-guided percutaneous puncture pulmonary nodule biopsy and to establish its prediction model.Methods The clinical data and imaging materials of 180 patients with small pulmonary nodules,who received CT-guided percutaneous puncture pulmonary nodule biopsy at the Affiliated Hongqi Hospital of Mudanjiang Medical University of China from September 2018 to September 2023,were collected.Logistic regression analysis was used to screen out the independent risk factors for the occurrence of complications after CT-guided percutaneous puncture pulmonary nodule biopsy.Based on the results of logistic regression analysis,a risk prediction model was constructed.Results Of the 180 patients with small pulmonary nodules,42(23.33％)developed postoperative complications(complication group),including pneumothorax(n=18,10.00％),hemorrhage(n=20,11.11％),pleural reaction(n=2,1.11％),and fever(n=2,1.11％).No complication occurred in the remaining 138 patients(76.67％,non-complication group).The differences in the coexisting chronic obstructive pulmonary disease(COPD),nodule diameter,number of needle-passing across the pleura,residence time of puncture needle,and distance between lesion and chest wall between the two groups were statistically significant(all P＜0.05).Multivariate logistic regression analysis showed that coexisting COPD(OR=6.558,95％CI:1.225-9.228,P=0.028),nodule diameter＜8 mm(OR=5.387,95％CI:1.773-16.367,P=0.003),number of puncture needle-passing across the pleura ≥3(OR=2.044,95％CI:1.275-3.278,P=0.003),residence time of puncture needle＞10 min(OR=12.620,95％CI:2.687-18.557,P=0.001)and distance between lesion and chest wall ≥30 mm(OR=1.992,95％CI:1.049-2.217,P=0.035)were the independent risk factors for the occurrence of complications after CT-guided percutaneous puncture pulmonary nodule biopsy.The above determined risk factors were used as the predictors to construct a prediction model.Receiver operating characteristic(ROC)curve analysis indicated that the critical value of this model to predict the occurrence of complications after CT-guided percutaneous puncture pulmonary nodule biopsy was 35.736,the area under ROC curve(AUC)was 0.831(95％CI:0.788-0.913),the sensitivity was 73.7％(95％CI:0.705-0.882),and the specificity was 90.6％(95％CI:0.811-0.985).Conclusion The predictive risk model,which is established based on the indicators of coexisting COPD,nodule diameter＜8 mm,number of puncture needle-passing across the pleura ≥3,residence time of puncture needle＞10 min and distance between lesion and chest wall ≥30 mm,can well predict the occurrence of complications after CT-guided percutaneous puncture pulmonary nodule biopsy,and this model carries high clinical application value.