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991.
992.
目的评估胰岛素瘤体素内不相干运动(IVIM)相关参数和CT灌注参数及病理学分级的相关性。方法前瞻性收集北京协和医院怀疑胰岛素瘤且行IVIM和CT灌注扫描的患者共55例,对图像进行后处理得到IVIM相关参数[包括表观扩散系数(ADC)、真实扩散系数(D)、灌注相关扩散系数(D*)和灌注分数(f)]和CT灌注参数[包括血流量(BF)、血容量(BV)和渗透性(PM)]。对术后病理标本进行染色获得病理学指标(包括分级、ki-67指数和核分裂相)。比较正常胰腺不同解剖部位及正常胰腺与胰岛素瘤的IVIM相关参数差异。分析IVIM参数与CT灌注参数及病理学指标的相关性。结果胰尾ADC值及D值均明显减低,差异有统计学意义(P均<0.001)。胰岛素瘤及正常胰腺的所有IVIM参数差异均有统计学意义(P均<0.001)。正常胰腺的ADC值、f值与BF呈正相关(r=0.437,P=0.003;r=0.357,P=0.010),余IVIM相关参数与CT灌注参数均无相关性(P均>0.05)。IVIM参数与胰岛素瘤病理学分级指标间均无相关性(P均>0.05)。结论正常胰腺的不同解剖部位的I... 相似文献
993.
目的 对比分析顺铂或奈达铂与紫醇联合治疗宫颈癌的疗效。方法 选择2012年2月-2015年12月在宁强县天津医院进行诊治的宫颈癌患者160例,按照使用化疗药物的不同分为顺铂组和奈达铂组。顺铂组采取TP化疗方案,奈达铂组采取TN化疗方案,对比两组的疗效、化疗不良反应、住院时间和治疗费用。结果 顺铂组的有效率为79.26%,与奈达铂组的82.05%相比无明显差异;奈达铂组Ⅰ~Ⅳ级血红蛋白降低、白细胞减少的发生率均明显高于顺铂组(P<0.05),但两组间Ⅲ~Ⅳ级血红蛋白降低、血小板和白细胞减少发生率无明显差异,奈达铂组Ⅰ~Ⅳ级和Ⅲ~Ⅳ级恶心、呕吐发生率均明显低于顺铂组(P<0.05);奈达铂组患者的住院时间明显短于顺铂组(P<0.05);奈达铂组的治疗费用与顺铂组相比无明显差异。结论 顺铂或奈达铂与紫杉醇联合应用于宫颈癌辅助化疗的疗效相似,奈达铂的胃肠道不良反应比顺铂更低,骨髓抑制尽管增加但仍可控,采用奈达铂化疗较顺铂缩短了住院时间,且住院费用并无明显增加,患者更易接受。 相似文献
994.
目的 观察人工智能(AI)知识图谱和图像分类对胸部后前位X线片(简称胸片)质量控制(QC)的价值。方法 回顾性分析安徽省影像云平台中595家医疗机构共9 236幅胸片,构建包含21个分类标签的QC知识图谱。先由10名技师据此对胸片进行2轮单人QC和1轮多人QC,分别将结果记为A、B、C;再以AI算法进行分类评估,将结果记为D。最后由1名QC专家对C、D进行审核并确定最终QC结果,以之为参考评估上述4种QC效果。结果 AI算法用于胸片QC的曲线下面积(AUC)均≥0.780,平均AUC为0.939。A、B、C、D胸片QC的平均精确率分别为81.15%、85.47%、91.65%、92.21%。结论 AI知识图谱和图像分类技术可有效用于胸部后前位X线片QC。 相似文献
995.
996.
民国时期上海主要中医药团体简介 总被引:1,自引:0,他引:1
在评价近代上海的中医活动及其影响时,中医团体的地位不容忽视。上海是我国最先创办中医团体的地区。在20世纪前半叶的近50年中,上海的中医团体活动十分活跃,具有创办时间早,组织规模大,团体数量多,活动影响广等特点,其辐射出的作用和影响在近代我国的中医发展史中也扮演着十分重要的角色。 相似文献
997.
This study investigated the anti-corrosion performance of commercial amino alcohol migratory corrosion inhibitors (MCIs) on concrete that underwent varying degrees of chloride erosion. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD), scanning electron microscopy, and energy dispersive spectroscopy (SEM-EDS) analyses were performed to study the anti-corrosion performance and mechanism of the MCIs on the steel bars. The results indicated that the corrosion resistance of the steel bars in concrete was significantly improved by coating with the MCIs, and the earlier the specimens were coated with the MCIs, the higher the anti-corrosion efficiency. The anti-corrosion efficiency was 55.35% when the MCIs coating was applied before chloride erosion; however, the anti-corrosion efficiency decreased to 3.40% when the MCIs coating was applied after the ninth drying–wetting cycle. The improvement in corrosion resistance of the steel bar in concrete coated with MCIs was due to the protective MCIs-molecule film that formed on the steel bar surfaces, and the oxidative dissolution of iron at the anode was effectively inhibited by the MCIs coating. 相似文献
998.
Rationale:Osteosarcoma (OS) is a primary malignant bone tumor that originates in the mesenchymal tissue. It is the most common type of pleomorphic tumor occurring in children and adolescents. Currently, there is no established systematic treatment for OS that progresses during standard preoperative chemotherapy.Patient concerns and diagnoses:We describe a 14-year-old male patient with a 4-month history of pain in the upper right leg. Based on the results of percutaneous biopsy, a diagnosis of OS was made. After admission, the patient was treated with first-line chemotherapy agents. After a single course of treatment, the tumor progressed locally and no limb salvage was feasible.Interventions and outcomes:Intervention with denosumab combined with chemotherapy led to a significant reduction in tumor volume and ossification of soft tissue, which successfully resulted in limb salvage rather than amputation. The patient showed no evidence of recurrent or distant metastasis at 6-month follow-up.Lessons:Treatment with receptor activator of nuclear factor-ĸB ligand inhibitor denosumab combined with standard chemotherapy is effective for advanced OS progressing after chemotherapy. We recommend denosumab therapy for successful limb salvage in patients with high-grade OS associated with osteolytic bone destruction and refractory to preoperative neoadjuvant chemotherapy. 相似文献
999.
Wenhan Jia Hong Liang Lining Wang Ming Sun Xili Xie Jie Gao Linxian Li Xiao Tang Yanan Ma 《Nutrients》2022,14(14)
(1) Background: Few studies have investigated the association between eating styles and IBS. This study aimed to explore the association between abnormal eating styles and irritable bowel syndrome (IBS). (2) Methods: This cross-sectional study investigated students in China Medical University and Shenyang Medical College. Eating styles were evaluated by the Dutch Eating Behavior Questionnaire (DEBQ), and IBS was diagnosed according to Rome III criteria. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs). (3) Results: A total of 335 students were diagnosed with IBS. Students with the total scores in tertile 2 and 3 had 1.29 times and 2.75 times higher risk of IBS than students with the total scores in tertile 1, respectively. Simultaneously, the risk of IBS in the tertile 3 of external eating, emotional eating, and restraint eating trends was 3.87 times, 2.71 times, and 3.82 times higher than that of tertile 1, respectively. (4) Conclusions: this study showed that a high score in both total eating styles and each eating style was associated with the odds of having IBS and suggested that the psychological factors behind eating styles may play a critical role in controlling the IBS. 相似文献
1000.
Time-Dependent Seismic Fragility of Typical Concrete Girder Bridges under Chloride-Induced Corrosion
Recent studies highlighted the importance of the combined effects of prestress loss and corrosion deterioration for concrete girder bridge structures when the effect of damage on the performance level is estimated. The multi-deterioration mechanisms connected with chloride erosion include the cross-sectional area loss of longitudinal bars and stirrups, the reduction in the ductility, the decrease in the strength of steels and the strength loss of concrete in RC columns. For the corroded RC columns and corroded elastomeric bridge bearings, analytical models of the material degradation phenomena were employed for performing the probabilistic seismic performance analysis, which could obtain the system seismic fragility of aging bridges by considering the failure functionality of multiple correlated components (e.g., columns, bearings). The combined effects of prestress loss and cracking were also considered when developing time-dependent system seismic fragility functions. Here, a typical multi-span reinforced concrete girder bridge was used as a case study for studying the time-variant seismic performance. The results revealed the importance of the joint effects of the multi-deterioration mechanisms when modeling the time-dependent seismic fragility of aging bridge systems, as well as the significance of considering the combined effects of prestress loss and cracking. 相似文献