AUC, Area under the curve

AUC,曲线下面积
  • 文章类型: Journal Article
    炎症性疾病,如牙周炎和动脉粥样硬化性冠心病(ASCHD),引发促炎介质的产生。这项研究的目的是评估使用唾液白细胞介素-1β(IL-1β)的准确性,白细胞介素-18(IL-18),和gasderminD(GSDMD)从健康个体中辨别患有和不患有ASCHD的牙周炎患者,并评估其与临床牙周参数和低密度脂蛋白(LDL)水平的相关性。该研究涉及120名参与者:30名是健康受试者(对照组,C),30例广泛性牙周炎(P组),30例患者有ASCHD和临床健康的牙周病(AS-C组),30例患有ASCHD和全身性牙周炎(AS-P组)。收集唾液和血液样本,和牙周特征,如菌斑指数,探查时出血,探测袋深度,并检查了临床附着丧失。IL-1β,使用ELISA测定来自唾液的IL-18和GSDMD水平。从血液样品中测定LDL水平。P组,AS-C,AS-P有较高水平的唾液IL-1β,IL-18和GSDMD高于C组。所有生物标志物的受试者工作特征(ROC)曲线显示出较高的诊断准确性,与临床参数和LDL水平呈显著正相关。所研究的促炎介质与疾病严重程度之间观察到的相关性表明,这些生物标志物可以作为牙周炎和ASCHD等疾病进展的指标。
    Inflammatory illnesses, such as periodontitis and atherosclerotic coronary heart disease (ASCHD), trigger the production of pro-inflammatory mediators. The aim of this study was to assess the accuracy of using salivary interleukin-1β (IL-1β), interleukin-18 (IL-18), and gasdermin D (GSDMD) in discerning patients with periodontitis with and without ASCHD from healthy individuals, and to assess their correlation with clinical periodontal parameters and low-density lipoprotein (LDL) levels. The study involved 120 participants: 30 were healthy subjects (control group, C), 30 had generalized periodontitis (group P), 30 had ASCHD and clinically healthy periodontium (group AS-C), and 30 had ASCHD and generalized periodontitis (group AS-P). Saliva and blood samples were collected, and periodontal characteristics such as plaque index, bleeding on probing, probing pocket depth, and clinical attachment loss were examined. IL-1β, IL-18, and GSDMD levels from saliva were determined using ELISA. LDL levels were determined from the blood samples. Groups P, AS-C, and AS-P had higher levels of salivary IL-1β, IL-18, and GSDMD than group C. The receiver operating characteristic (ROC) curves of all biomarkers showed high diagnostic accuracy, with a significant positive correlation with the clinical parameters and LDL levels. The observed correlations between the studied pro-inflammatory mediators and disease severity suggest that these biomarkers could serve as indicators of disease progression in conditions such as periodontitis and ASCHD.
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  • 文章类型: Journal Article
    患有肺结核(PTB)疾病和痰培养阳性的患者是主要的感染源。培养物转化时间不一致,定义呼吸隔离的长度具有挑战性。这项研究的目的是制定一个分数来预测隔离期的长度。
    进行了一项回顾性研究,以评估229例PTB患者治疗4周后与痰培养持续阳性相关的危险因素。使用多变量逻辑回归模型来确定阳性培养的预测因子,并根据最终模型的系数创建评分系统。
    痰培养为40.6%的持续阳性。咨询时发烧(1.87,95%CI:1.02-3.41),吸烟(2.44,95%CI:1.36-4.37),>2个受影响的肺叶(1.95,95%CI:1.08-3.54),中性粒细胞与淋巴细胞比率>3.5(2.22,95%CI:1.24-3.99),与培养物转化延迟显著相关。因此,我们得出的严重程度评分曲线下面积为0.71(95%CI:0.64~0.78).
    在PTB涂片阳性的患者中,临床评分,放射学和分析参数可以用作辅助工具,以协助隔离期的临床决策。
    UNASSIGNED: Patients with pulmonary tuberculosis (PTB) disease and positive sputum cultures are the main source of infection. Culture conversion time is inconsistent and defining the length of respiratory isolation is challenging. The objective of this study is to develop a score to predict the length of isolation period.
    UNASSIGNED: A retrospective study was carried out to evaluated risk factors associated with persistent positive sputum cultures after 4 weeks of treatment in 229 patients with PTB. A multivariable logistic regression model was used to determinate predictors for positive culture and a scoring system was created based on the coefficients of the final model.
    UNASSIGNED: Sputum culture was persistently positive in 40.6%. Fever at consultation (1.87, 95% CI:1.02-3.41), smoking (2.44, 95% CI:1.36-4.37), >2 affected lung lobes (1.95, 95% CI:1.08-3.54), and neutrophil-to-lymphocyte ratio > 3.5 (2.22, 95% CI:1.24-3.99), were significantly associated with delayed culture conversion. Therefore, we assembled a severity score that achieved an area under the curve of 0.71 (95% CI:0.64-0.78).
    UNASSIGNED: In patients with smear positive PTB, a score with clinical, radiological and analytical parameters can be used as a supplemental tool to assist clinical decisions in isolation period.
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  • 文章类型: Journal Article
    尽管免疫疗法彻底改变了癌症管理,大多数患者并没有从中获益。旨在探索一种合适的免疫治疗疗效预测策略,我们从多队列人群中收集了6251例患者的转录组数据,并使用机器学习算法对数据进行了分析.在这项研究中,我们发现,来自三个免疫基因簇的患者在接受免疫治疗治疗时具有不同的总生存期(P<0.001),并且这些簇具有不同的缺氧评分和代谢功能状态。免疫基因评分显示良好的免疫治疗疗效预测(20个月AUC为0.737),这得到了很好的验证。免疫基因评分,肿瘤突变负荷,和长链非编码RNA评分进一步结合构建肿瘤免疫微环境特征,与总生存率的相关性更强(AUC,20个月时为0.814),而不是使用单个变量时。因此,我们建议通过对癌症进行多组学分析,对与免疫治疗疗效相关的肿瘤免疫微环境进行表征.
    Although immunotherapy has revolutionized cancer management, most patients do not derive benefits from it. Aiming to explore an appropriate strategy for immunotherapy efficacy prediction, we collected 6251 patients\' transcriptome data from multicohort population and analyzed the data using a machine learning algorithm. In this study, we found that patients from three immune gene clusters had different overall survival when treated with immunotherapy (P < 0.001), and that these clusters had differential states of hypoxia scores and metabolism functions. The immune gene score showed good immunotherapy efficacy prediction (AUC was 0.737 at 20 months), which was well validated. The immune gene score, tumor mutation burden, and long non-coding RNA score were further combined to build a tumor immune microenvironment signature, which correlated more strongly with overall survival (AUC, 0.814 at 20 months) than when using a single variable. Thus, we recommend using the characterization of the tumor immune microenvironment associated with immunotherapy efficacy via a multi-omics analysis of cancer.
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  • 文章类型: Journal Article
    IIIB型粘多糖贮积症(MPSIIIB)是一种超级病,没有批准治疗的致命儿科疾病。它是由溶酶体酶α-N-乙酰氨基葡萄糖苷酶(NAGLU)编码基因中的突变引起的。Tralesinidasealfa(TA)是一种融合蛋白,由重组NAGLU和修饰的人胰岛素样生长因子2组成,正在开发作为MPSIIIB的酶替代疗法。由于MPSIIIB是儿科疾病的安全性/毒性,在幼年非人灵长类动物中评估了TA的药代动力学和生物分布,这些灵长类动物每周进行5次侧脑室(ICV)或单次静脉(IV)输注TA。由ICV慢速管理的TA,ICV等体积推注或静脉输注耐受性良好,在临床观察中没有观察到影响,心电图或眼科参数,或呼吸频率。观察到的药物相关变化仅限于ICV施用后CSF中和沿ICV导管轨道的细胞浸润增加。这些发现与功能变化无关,与ICV导管的使用有关。CSFPK谱在所有测试条件下是一致的,并且在ICV施用后TA广泛分布在CNS中。观察到抗药物抗体,但似乎并未显着影响对TA的暴露。血浆中TA浓度与直接与大池接触的大脑区域之间的相关性表明,淋巴引流可能是CNS中TA清除的原因。数据支持通过等体积推注ICV输注向患有MPSIIIB的儿科患者施用TA。
    Mucopolysaccharidosis Type IIIB (MPS IIIB) is an ultrarare, fatal pediatric disease with no approved therapy. It is caused by mutations in the gene encoding for lysosomal enzyme alpha-N-acetylglucosaminidase (NAGLU). Tralesinidase alfa (TA) is a fusion protein comprised of recombinant NAGLU and a modified human insulin-like growth factor 2 that is being developed as an enzyme replacement therapy for MPS IIIB. Since MPS IIIB is a pediatric disease the safety/toxicity, pharmacokinetics and biodistribution of TA were evaluated in juvenile non-human primates that were administered up to 5 weekly intracerebroventricular (ICV) or single intravenous (IV) infusions of TA. TA administered by ICV slow-, ICV isovolumetric bolus- or IV-infusion was well-tolerated, and no effects were observed on clinical observations, electrocardiographic or ophthalmologic parameters, or respiratory rates. The drug-related changes observed were limited to increased cell infiltrates in the CSF and along the ICV catheter track after ICV administration. These findings were not associated with functional changes and are associated with the use of ICV catheters. The CSF PK profiles were consistent across all conditions tested and TA distributed widely in the CNS after ICV administration. Anti-drug antibodies were observed but did not appear to significantly affect the exposure to TA. Correlations between TA concentrations in plasma and brain regions in direct contact with the cisterna magna suggest glymphatic drainage may be responsible for clearance of TA from the CNS. The data support the administration of TA by isovolumetric bolus ICV infusion to pediatric patients with MPS IIIB.
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  • 文章类型: Journal Article
    未经证实:甲状腺癌(TC)占内分泌肿瘤的90%以上,是成人典型的头颈部肿瘤。这项研究的目的是开发一种预测工具来预测患有甲状腺乳头状癌(PTC)的中年患者的癌症特异性生存率(CSS)。
    UNASSIGNED:将2004年至2015年的患者随机分为训练队列(n=25,342)和内部验证队列(n=10,725)。2016年至2018年的患者被视为外部验证队列(n=11353)。采用COX比例风险模型筛选有意义的独立危险因素。将这些因素构建成列线图,以预测中年PTC患者的CSS。然后使用一致性指数(C指数)评估列线图的性能和准确性,校准曲线和曲线下面积(AUC)。通过决策曲线分析(DCA)评估列线图的临床价值。
    未经批准:年龄,性别,婚姻,肿瘤分级,T级,N级,M阶段,手术,化疗,肿瘤大小是独立的预后因素。培训的C指数,内部验证,和外部验证队列分别为0.906,0.887和0.962.AUC和校准曲线显示出良好的准确性。DCA显示列线图的临床价值高于肿瘤,淋巴结转移(TNM)分期。
    UNASSIGNED:我们开发了一种新的预测工具来预测患有PTC的中年患者的CSS。经过内部和外部验证,该模型具有良好的性能,可以友好地帮助医生和患者预测CSS。
    UNASSIGNED: Thyroid cancer (TC) accounts for more than 90% of endocrine tumours and is a typical head and neck tumour in adults. The aim of this study was to develop a predictive tool to predict cancer-specific survival (CSS) in middle-aged patients with papillary thyroid carcinoma (PTC).
    UNASSIGNED: The patients from 2004 to 2015 were randomly divided into a training cohort (n = 25,342) and a internal validation cohort (n = 10,725). The patients from 2016 to 2018 were treated as an external validation cohort (n = 11353). COX proportional hazard model was used to screen meaningful independent risk factors. These factors were constructed into a nomogram to predict CSS in middle-aged patients with PTC. The performance and accuracy of the nomogram were then evaluated using the concordance index (C-index), calibration curve and the area under the curve (AUC). The clinical value of nomogram was evaluated by decision curve analysis (DCA).
    UNASSIGNED: Age, gender, marriage, tumour grade, T stage, N stage, M stage, surgery, chemotherapy, and tumour size were independent prognostic factors. The C-indexes of the training, internal validation, and external validation cohorts were 0.906, 0.887, and 0.962, respectively. The AUC and calibration curves show good accuracy. DCA shows that the clinical value of the nomogram is higher than that of Tumour, Node and Metastasis (TNM) staging.
    UNASSIGNED: We developed a new prediction tool to predict CSS in middle-aged patients with PTC. The model has good performance after internal and external validation, which can be friendly to help doctors and patients predict CSS.
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  • 文章类型: Journal Article
    UASSIGNED:为了评估诊断精度并证明2台设备的等效性,先进的视觉分析仪(AVA,Elisar视觉技术)和汉弗莱现场分析仪(HFA,蔡司)在10-2程序上检测青光眼。
    未经批准:预期,横截面,观察性研究。
    UNASSIGNED:66例青光眼患者中每1只眼的阈值估计,36个控制参与者,10例青光眼疑似病例用AVA和HFA进行10-2试验分析。
    UNASSIGNED:计算并比较了68个点和中心16个测试点的平均灵敏度(MS)值。类内相关性(ICC),布兰德-奥特曼(BA)地块,MS的线性回归,平均偏差(MD),计算和模式标准偏差(PSD)以评估设备的10-2阈值估计值。针对MS和MD值生成接收器工作特性曲线,曲线下面积(AUC)与评估诊断精度进行比较。
    UNASSIGNED:68点和中心16点的平均灵敏度值,MS和MD值的AUC,ICC值,BA地块,和线性回归分析。
    未经证实:Bland-Altman图显示MS的显著相关性,MD,和两个设备的PSD值。对于MS,总ICC值为0.96(P<0.001),平均偏倚为0.0dB,一致界限为7.59.两种设备之间的MS值差异为-0.4760±1.95(P>0.05)。AVA的MS值的AUC为0.89,HFA的AUC为0.92(P=0.188);而MD值在0.88相似(P=0.799)。先进的视力分析仪和HFA同样区分健康和青光眼患者(P<0.001),尽管HFA表示能力稍高(P>0.05)。
    UNASSIGNED:统计结果表示AVA和HFA之间的等效性,因为AVA的阈值估计与10-2程序的HFA密切相关。
    UNASSIGNED:在参考文献之后可以找到专有或商业披露。
    UNASSIGNED: To evaluate diagnostic precision and prove equivalence of 2 devices, Advanced vision analyzer (AVA, Elisar Vision Technology) and Humphrey field analyzer (HFA, Zeiss) for the detection of glaucoma on 10-2 program.
    UNASSIGNED: Prospective, cross-sectional, observational study.
    UNASSIGNED: Threshold estimates of 1 eye each of 66 patients with glaucoma, 36 control participants, and 10 glaucoma suspects were analyzed on 10-2 test with AVA and HFA.
    UNASSIGNED: Mean sensitivity (MS) values of 68 points and central 16 test points were calculated and compared. Intraclass correlation (ICC), Bland-Altman (BA) plots, linear regression of MS, mean deviation (MD), and pattern standard deviation (PSD) were computed to assess the 10-2 threshold estimate of the devices. Receiver operating characteristic curves were generated for MS and MD values, and the area under the curve (AUC) was compared with assessing diagnostic precision.
    UNASSIGNED: Mean sensitivity values of 68 points and central 16 points, AUC for MS and MD values, ICC values, BA plots, and linear-regression analysis.
    UNASSIGNED: Bland-Altman plot showed significant correlation for MS, MD, and PSD values for both devices. For MS, the overall ICC value was 0.96 (P < 0.001) with a mean bias of 0.0 dB and limits of agreement range of 7.59. The difference in MS values between both devices was -0.4760 ± 1.95 (P > 0.05). The AUC for MS values for AVA was 0.89 and for HFA was 0.92 (P = 0.188); whereas it was similar at 0.88 for MD values (P = 0.799). Advanced vision analyzer and HFA identically discriminated between healthy and patients with glaucoma (P < 0.001), although HFA denoted marginally greater ability (P > 0.05).
    UNASSIGNED: Statistical results denote adequate equivalence between AVA and HFA because threshold estimates of AVA strongly correlate with HFA for 10-2 program.
    UNASSIGNED: Proprietary or commercial disclosure may be found after the references.
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  • 文章类型: Journal Article
    未经证实:舌头图像(颜色,舌头的大小和形状以及颜色,舌苔的厚度和水分含量),根据中医理论反映全身的健康状况,已经在中国广泛使用了数千年。在这里,我们调查了舌象和舌苔微生物组在胃癌(GC)诊断中的价值。
    UNASSIGNED:从2020年5月到2021年1月,我们同时收集了中国328名GC患者(所有新诊断为GC)和304名非胃癌(NGC)参与者的舌象和舌苔样本,和16SrDNA用于表征舌苔样品的微生物组。然后,建立人工智能(AI)深度学习模型,评估舌象和舌苔微生物组在GC诊断中的价值。考虑到舌成像作为诊断工具更方便、更经济,我们于2020年5月至2022年3月在中国进一步开展了一项前瞻性多中心临床研究,招募了来自中国10个中心的937例GC患者和1911例NGC患者,以进一步评估舌象在GC诊断中的作用.此外,我们在另一个独立的外部验证队列中验证了该方法,该队列包括来自7个中心的294例GC患者和521例NGC患者.这项研究在ClinicalTrials.gov注册,NCT01090362。
    未经评估:第一次,我们发现舌象和舌苔微生物组可以作为GC诊断的工具,基于舌象的诊断模型的曲线下面积(AUC)值为0.89。基于舌苔微生物组的模型的AUC值使用属数据达到0.94,使用物种数据达到0.95。前瞻性多中心临床研究结果表明,三种基于舌象的GCs模型的AUC值在内部验证中达到0.88-0.92,在独立外部验证中达到0.83-0.88,显着优于八种血液生物标志物的组合。
    UNASSIGNED:我们的结果表明,舌头图像可作为GC诊断的稳定方法,并且显着优于常规血液生物标志物。我们开发的三种基于舌图像的AI深度学习诊断模型可用于充分区分GC患者和NGC参与者,甚至早期GC和癌前病变,如萎缩性胃炎(AG)。
    未经批准:国家重点研发计划(2021YFA0910100),浙江省中医药科技计划方案(2018ZY006),浙江省医学科技项目(2022KY114,WKJ-ZJ-2104),浙江省上消化道肿瘤研究中心(JBZX-202006),浙江省自然科学基金(HDMY22H160008),浙江省科技项目(2019C03049),国家自然科学基金(82074245,81973634,82204828),中国博士后科学基金(2022M713203)。
    UNASSIGNED: Tongue images (the colour, size and shape of the tongue and the colour, thickness and moisture content of the tongue coating), reflecting the health state of the whole body according to the theory of traditional Chinese medicine (TCM), have been widely used in China for thousands of years. Herein, we investigated the value of tongue images and the tongue coating microbiome in the diagnosis of gastric cancer (GC).
    UNASSIGNED: From May 2020 to January 2021, we simultaneously collected tongue images and tongue coating samples from 328 patients with GC (all newly diagnosed with GC) and 304 non-gastric cancer (NGC) participants in China, and 16 S rDNA was used to characterize the microbiome of the tongue coating samples. Then, artificial intelligence (AI) deep learning models were established to evaluate the value of tongue images and the tongue coating microbiome in the diagnosis of GC. Considering that tongue imaging is more convenient and economical as a diagnostic tool, we further conducted a prospective multicentre clinical study from May 2020 to March 2022 in China and recruited 937 patients with GC and 1911 participants with NGC from 10 centres across China to further evaluate the role of tongue images in the diagnosis of GC. Moreover, we verified this approach in another independent external validation cohort that included 294 patients with GC and 521 participants with NGC from 7 centres. This study is registered at ClinicalTrials.gov, NCT01090362.
    UNASSIGNED: For the first time, we found that both tongue images and the tongue coating microbiome can be used as tools for the diagnosis of GC, and the area under the curve (AUC) value of the tongue image-based diagnostic model was 0.89. The AUC values of the tongue coating microbiome-based model reached 0.94 using genus data and 0.95 using species data. The results of the prospective multicentre clinical study showed that the AUC values of the three tongue image-based models for GCs reached 0.88-0.92 in the internal verification and 0.83-0.88 in the independent external verification, which were significantly superior to the combination of eight blood biomarkers.
    UNASSIGNED: Our results suggest that tongue images can be used as a stable method for GC diagnosis and are significantly superior to conventional blood biomarkers. The three kinds of tongue image-based AI deep learning diagnostic models that we developed can be used to adequately distinguish patients with GC from participants with NGC, even early GC and precancerous lesions, such as atrophic gastritis (AG).
    UNASSIGNED: The National Key R&D Program of China (2021YFA0910100), Program of Zhejiang Provincial TCM Sci-tech Plan (2018ZY006), Medical Science and Technology Project of Zhejiang Province (2022KY114, WKJ-ZJ-2104), Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer (JBZX-202006), Natural Science Foundation of Zhejiang Province (HDMY22H160008), Science and Technology Projects of Zhejiang Province (2019C03049), National Natural Science Foundation of China (82074245, 81973634, 82204828), and Chinese Postdoctoral Science Foundation (2022M713203).
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  • 文章类型: Journal Article
    UNASSIGNED:运输时间流量测量(TTFM)可以在冠状动脉旁路移植术中检测出严重的吻合口狭窄。然而,亚临界狭窄的识别仍然具有挑战性.我们假设舒张阻力指数(DRI),一种新颖的TTFM度量,在评估亚临界狭窄方面比目前可用的TTFM指标更有效。DRI用于测量远端吻合的舒张阻力与收缩阻力的变化。
    UNASSIGNED:对35例患者的123例冠状动脉搭桥吻合术进行了前瞻性分析。冠状动脉旁路移植术期间,平均移植物流量(Qmean),搏动指数,并获得舒张期充盈。使用TTFM和动脉压的术中记录计算DRI。术后,吻合狭窄被归类为成功(<50%),亚临界(50%-74%),和临界(≥75%)通过多探测器计算机断层扫描。
    未经批准:总共,93(76%),13(10%),17个(14%)吻合成功,次临界,和批判,分别。DRI和舒张充盈可以区分亚临界和成功吻合(分别为P<0.01和<0.01),而Qmean和搏动指数不能(分别为P=.12和.39)。建立受试者工作特征曲线,以评估检测≥50%狭窄的诊断能力。在左前降支移植中(n=55),DRI曲线下面积最高(0.91),其次是舒张充盈(0.87),Qmean(0.74),和搏动指数(0.65)。
    UNASSIGNED:DRI和舒张期充盈具有可靠的诊断能力,可在冠状动脉旁路移植术中检测≥50%的狭窄。在左前降支移植中,DRI比其他TTFM指标具有更令人满意的检测能力。
    UNASSIGNED: Transit time flow measurement (TTFM) can detect critical anastomotic stenosis during coronary artery bypass grafting. However, the identification of subcritical stenosis remains challenging. We hypothesized that diastolic resistance index (DRI), a novel TTFM metric, is more effective in evaluating subcritical stenosis than the currently available TTFM metrics. DRI is used to measure changes in the diastolic versus systolic resistance of distal anastomosis.
    UNASSIGNED: A total of 123 coronary bypass anastomoses in 35 patients were prospectively analyzed. During coronary artery bypass grafting, the mean graft flow (Qmean), pulsatility index, and diastolic filling were obtained. DRI was calculated using the intraoperative recordings of TTFM and arterial pressure. Postoperatively, stenosis of anastomoses was categorized into successful (<50%), subcritical (50%-74%), and critical (≥75%) via multidetector computed tomography scan.
    UNASSIGNED: In total, 93 (76%), 13 (10%), and 17 (14%) anastomoses were graded as successful, subcritical, and critical, respectively. DRI and diastolic filling could distinguish subcritical from successful anastomoses (P < .01 and < .01, respectively), whereas Qmean and pulsatility index could not (P = .12 and .39, respectively). The receiver operating characteristic curves were established to evaluate the diagnostic ability for detecting ≥50% stenosis. In left anterior descending artery grafting (n = 55), DRI had the highest area under the curve (0.91), followed by diastolic filling (0.87), Qmean (0.74), and pulsatility index (0.65).
    UNASSIGNED: DRI and diastolic filling had a reliable diagnostic ability for detecting ≥50% stenosis during coronary artery bypass grafting. In left anterior descending artery grafting, DRI had a more satisfactory detection capability than other TTFM metrics.
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  • 文章类型: Journal Article
    UNASSIGNED:切除肿块性病变所产生的复杂的前颅底缺损在大小和构型上各不相同,可能是广泛的。我们分析了最大的单中心系列中线颅面病变,其内部和外部延伸。该研究旨在开发一种基于患者特征和手术计划的术前测量术后脑脊液(CSF)渗漏风险的预测模型。
    UNASSIGNED:使用逻辑回归方法(选择岭回归算法)回顾性分析了166例男性和149例女性患者,平均年龄40、5岁(1岁和-81岁)。总的CSF泄漏率为9.6%。R中的ROSE算法和“glmnet”软件套件用于克服队列的失衡并避免过度训练模型。
    UNASSIGNED:术后脑脊液漏的最有影响力的可改变的阴性预测因子是使用颅外和联合方法。使用经基底入路,总切除,使用一个或两个血管化皮瓣进行颅底重建是良好预后的最重要的可预测因素。高风险的标准建立在50%,模型的特异性高达0.83。
    UNASSIGNED:所进行的研究允许确定术后脑脊液漏的最重要预测因素,并使用每位患者已知的数据制定有效的公式来估计这种并发症的风险。我们认为,建议的基于Web的在线计算器可以在偏离模式的临床情况下提供决策支持。
    UNASSIGNED: Complex anterior skull base defects produced by resection of mass lesions vary in size and configuration and may be extensive. We analyzed the largest single-center series of midline craniofacial lesions extending intra- and extracranially. The study aims at the development of a predictive model for preoperative measurement of the risk of the postoperative cerebrospinal fluid (CSF) leak based on patients\' characteristics and surgical plans.
    UNASSIGNED: 166 male and 149 female patients with mean age 40,5 years (1 year and - 81 years) operated for benign and tumor-like midline craniofacial mass lesions were retrospectively analyzed using logistic regression method (Ridge regression algorithm was selected). The overall CSF leak rate was 9.6%. The ROSE algorithm and \'glmnet\' software suite in R were used to overcome the cohort\'s disbalance and avoid overtraining the model.
    UNASSIGNED: The most influential modifiable negative predictor of the postoperative CSF leak was the use of extracranial and combined approaches. Use of transbasal approaches, gross total resection, utilization of one or two vascularized flaps for skull base reconstruction were the foremost modifiable predictors of a good outcome. Criterium of elevated risk was established at 50% with a specificity of the model as high as 0.83.
    UNASSIGNED: The performed study has allowed for identifying the most significant predictors of postoperative CSF leak and developing an effective formula to estimate the risk of this complication using data known for each patient. We believe that the suggested web-based online calculator can be helpful for decision making support in off-pattern clinical situations.
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  • 文章类型: Journal Article
    食管癌和胃癌(OeGC)患者的治疗以疾病分期为指导,患者表现状况和偏好。淋巴结(LN)状态是OeGC患者的最强预后因素之一。然而,在相同疾病阶段和LN状态的患者之间,生存率不同。我们最近表明,OeGC患者的LN大小也可能具有预后价值,因此,LN的轮廓对于大小估计和其他成像生物标志物的提取是必不可少的。我们假设机器学习工作流程能够:(1)找到包含LN的数字H&E染色载玻片,(2)创建一个评分系统,为结果提供一定程度的确定性,和(3)在那些图像中描绘LN。为了训练和验证管道,我们使用了OE02试验的1695个H&E幻灯片。数据集分为训练(80%)和验证(20%)。在来自OE05试验的826个H&E载玻片的外部数据集上测试该模型。U-Net体系结构用于生成预测图,从中提取预定义的特征。这些特征随后用于训练XGBoost模型以确定区域是否真正包含LN。凭借我们的创新方法,当使用阈值化U-Net预测的标准方法得出二元掩码时,验证数据集上的LN检测的平衡准确度为0.93(测试数据集上的0.83),而验证(测试)数据集上的LN检测的平衡准确度为0.81(0.81).我们的方法允许创建一个“不确定”类别,并部分限制了外部数据集上的假阳性预测。对于验证(测试)数据集,平均Dice评分为0.73(0.60)/图像和0.66(0.48)/LN。我们的管道比传统方法更准确地检测LN的图像,LN的高通量划分可以促进未来对大型数据集的LN内容分析。
    Treatment of patients with oesophageal and gastric cancer (OeGC) is guided by disease stage, patient performance status and preferences. Lymph node (LN) status is one of the strongest prognostic factors for OeGC patients. However, survival varies between patients with the same disease stage and LN status. We recently showed that LN size from patients with OeGC might also have prognostic value, thus making delineations of LNs essential for size estimation and the extraction of other imaging biomarkers. We hypothesized that a machine learning workflow is able to: (1) find digital H&E stained slides containing LNs, (2) create a scoring system providing degrees of certainty for the results, and (3) delineate LNs in those images. To train and validate the pipeline, we used 1695 H&E slides from the OE02 trial. The dataset was divided into training (80%) and validation (20%). The model was tested on an external dataset of 826 H&E slides from the OE05 trial. U-Net architecture was used to generate prediction maps from which predefined features were extracted. These features were subsequently used to train an XGBoost model to determine if a region truly contained a LN. With our innovative method, the balanced accuracies of the LN detection were 0.93 on the validation dataset (0.83 on the test dataset) compared to 0.81 (0.81) on the validation (test) datasets when using the standard method of thresholding U-Net predictions to arrive at a binary mask. Our method allowed for the creation of an \"uncertain\" category, and partly limited false-positive predictions on the external dataset. The mean Dice score was 0.73 (0.60) per-image and 0.66 (0.48) per-LN for the validation (test) datasets. Our pipeline detects images with LNs more accurately than conventional methods, and high-throughput delineation of LNs can facilitate future LN content analyses of large datasets.
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