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Artificial intelligence for characterization of diminutive colorectal polyps:A feasibility study comparing two computer-aided diagnosis systems

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Artificial Intelligence in Gastrointestinal Endoscopy 2024年第1期5卷 11-22页

作者： Quirine Eunice Wennie van der Zander Ramon M schreuder Ayla Thijssen Carolus H j Kusters Nikoo Dehghani thom.scheeve Bjorn Winkens Mirjam C M van der Ende-van Loon Peter H N de With Fons van der sommen Ad A M Masclee Erik j schoon Department of Gastroenterology and Hepatology Maastricht University Medical CenterMaastricht 6202 AZNetherlands GROW School for Oncology and ReproductionMaastricht UniversityMaastricht 6200 MDNetherlands Division of Gastroenterology and Hepatology Catharina Hospital EindhovenEindhoven 5602 ZANetherlands Department of Electrical Engineering Eindhoven University of TechnologyEindhoven 5600 MBNetherlands Department of Methodology and statistics Maastricht UniversityPostbus 6166200 MD MaastrichtNetherlands school for Public Health and Primary Care Maastricht UniversityMaastricht 6200 MDNetherlands

BACKGROUND Artificial intelligence(AI)has potential in the optical diagnosis of colorectal *** To evaluate the feasibility of the real-time use of the computer-aided diagnosis system(CADx)AI for ColoRectal Polyps(AI4CRP)for the optical diagnosis of diminutive colorectal polyps and to compare the performance with CAD EYE^(TM)(Fujifilm,Tokyo,japan).CADx influence on the optical diagnosis of an expert endoscopist was also *** AI4CRP was developed in-house and CAD EYE was proprietary software provided by *** CADxsystems exploit convolutional neural *** polyps were characterized as benign or premalignant and histopathology was used as gold ***4CRP provided an objective assessment of its characterization by presenting a calibrated confidence characterization value(range 0.0-1.0).A predefined cut-off value of 0.6 was set with valuess≥0.6 indicating premalignant colorectal *** confidence characterizations were defined as values 40%around the cut-off value of 0.6(0.76).self-critical AI4CRP’s diagnostic performances excluded low confidence *** AI4CRP use was feasible and performed on 30 patients with 51 colorectal ***-critical AI4CRP,excluding 14 low confidence characterizations[27.5%(14/51)],had a diagnostic accuracy of 89.2%,sensitivity of 89.7%,and specificity of 87.5%,which was higher compared to *** EYE had a 83.7%diagnostic accuracy,74.2%sensitivity,and 100.0%*** performances of the endoscopist alone(before AI)increased nonsignificantly after reviewing the CADx characterizations of both AI4CRP and CAD EYE(AI-assisted endoscopist).Diagnostic performances of the AI-assisted endoscopist were higher compared to both CADx-systems,except for specificity for which CAD EYE performed *** Real-time use of AI4CRP was *** confidence values provided by a CADx is novel and self-critical AI4CRP sho

关键词： Artificial intelligence Colorectal polyp characterization Computer aided diagnosis Diminutive colorectal polyps Optical diagnosis self-critical artificial intelligence

Le reflet de la sagesse chinoise

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今日中国（法文版） 2022年第8期60卷 34-36页

作者： LARs ULRIK thom Beijing Postcards

Eliza scidmore,une journaliste du National Geographie,avait visité Beijing en *** n'avait pas tari d’éloges sur 20 pages pour présenter Beijing sous tous les *** que j'ai trouvé curieux,c'est que nulle part ell... 详细信息

关键词： let journal pour

Dual-functional porous and cisplatin-loaded polymethylmethacrylate cement for reconstruction of load-bearing bone defect kills bone tumor cells

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Bioactive Materials 2022年第9期7卷 120-130页

作者： Zhule Wang Liebert Parreiras Nogueira Håvard jostein Haugen Ingrid CM.Van Der Geest Patricia Caetano de Almeida Rodrigues Dennis janssen thom Bitter jeroen j.j.P.van den Beucken sander CG.Leeuwenburgh Radboud University Medical Center Department of Dentistry-Regenerative BiomaterialsRadboud Institute for Molecular Life SciencesNijmegenthe Netherlands University of Oslo Department of BiomaterialsInstitute of Clinical DentistryFaculty of DentistryOsloNorway Radboud University Medical Center Department of OrthopedicsRadboud Institute for Health SciencesNijmegenthe Netherlands

Malignant bone tumors are usually treated by resection of tumor tissue followed by filling of the bone defect with bone graft ***(PMMA)cement is the most commonly used bone substitute in clinical orthopedics in view of its ***,the dense nature of PMMA renders this biomaterial unsuitable for local delivery of chemotherapeutic drugs to limit the recurrence of bone ***,we introduce porosity into PMMA cement by adding carboxymethylcellulose(CMC)to facilitate such local delivery of chemotherapeutic drugs,while retaining sufficient mechanical properties for bone reconstruction in load-bearing *** results show that the mechanical strength of PMMA-based cements gradually decreases with increasing CMC *** incorporation of≥3%CMC,the PMMA-based cements released up to 18%of the loaded cisplatin,in contrast to cements containing lower amounts of CMC which only released less than 2%of the cisplatin over 28 *** release of cisplatin efficiently killed osteosarcoma cells in vitro and the fraction of dead cells increased to 91.3%at day 7,which confirms the retained chemotherapeutic activity of released cisplatin from these PMMA-based ***,tibias filled with PMMA-based cements containing up to 3%of CMC exhibit comparable compressive strengths as compared to intact *** conclusion,we demonstrate that PMMA cements can be rendered therapeutically active by introducing porosity using CMC to allow for release of cisplatin without compromising mechanical properties beyond critical *** such,these data suggest that our dual-functional PMMA-based cements represent a viable treatment option for filling bone defects after bone tumor resection in load-bearing sites.

关键词： Porous polymethylmethacrylate cement Bone tumor treatment Local drug delivery Chemotherapeutic drug Ex vivo biomechanical assessment

Metastasis to Paranasal sinuses as the First Presenting sign of Renal Cell Carcinoma

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Open journal of Urology 2012年第1期2卷 28-31页

作者： Gustavo Ruschi Bechara josé Anacleto Dutra Resende júnior Hélio Assuncao Gouveia thom.s Accioly de souza Department of Urology Hospital Federal da Lagoa Rio de Janeiro Brazil

The clear cell carcinoma is a relatively rare tumor, represented approximately 85% by renal cell carcinoma (RCC), but has a characteristic of early metastatic, which sometimes spread to unusual places. Metastatic tumors in the paranasal sinuses are very rare. This case report a 65 years-old patient who presented sinusitis and epitaxis as a first sign of renal cell carcinoma with metastasis to the right maxillary sinus, which was opereted at Lagoa Hospital—Rj and strengthen the inclusion of this disease in the differential diagnosis of sinus disease. The renal cell carcinoma is a relatively rare tumor, representing approximately 3% of malignant tumors. About a third of patients with renal cell carcinoma have metastasis at diagnosis. The sinuses are a rare location of metastasis. The maxillary sinuses and the paranasal sinuses are most commonly affected by metastatic tumors to the sinuses region. The most frequent primary tumor to metastasis to paranasal sinuses is the renal cell carcinoma. This report highlights the rarity of the case and the importance in the differential diagnosis of sinus disease.

关键词： Renal Cell Carcinoma Metastasis sinuses Epistaxis

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案例教学法——一种很有效的环境教育方式

环境教育 2001年第4期 22-23页

作者： thom j.McEvoy 美国佛蒙特大学自然资源学院

在教师进行有关环境知识的教学时，经常将学生作为听众，把知识记忆当成是目标，但这样做，很可能丧失了更富有教育意义的“思维过程”，这一过程的意义在于：教师可以有效地培养学生分析问题的方法、技能和态度，而这些宝贵的东西也正... 详细信息

在教师进行有关环境知识的教学时，经常将学生作为听众，把知识记忆当成是目标，但这样做，很可能丧失了更富有教育意义的“思维过程”，这一过程的意义在于：教师可以有效地培养学生分析问题的方法、技能和态度，而这些宝贵的东西也正是通过学生自己的参与实现的。下面介绍的案例教学法无疑为大家开启了一扇能有效促进学生学习角色转变和参与方法训练的新窗口。

关键词：案例教学法环境教育方式教学方法

Tierexperimentelle Untersuchung zur Effektivit tder transarteriellen Chemoembolisation unter Einsatz von Poly-Laktide-co-Glykolide-Mikrosph ren

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journal of Huazhong University of science and Technology(Medical sciences) 2002年第4期22卷 346-349页

作者：钱骏 Rntgenabteilung

Evaluierung der Effektivit t von Poly- L aktide- co- Glykolide (PL CG ) - Mikrosph ren als Em bolisationsm aterial in der transarteriellen Chem oem bolisation(TACE) im tierexperimentellen *** m nnlichen ACI- Ratten(n=11) erfolgte die Im plantation eines soliden Morris Hepatomas(1m m3) subkapsul r in den linken L eberlappen. 13Tage nach Implan- tation wurden die Tumorvolumina kernspintom ographisch bestim *** Tiere wurden in Thera- piegruppe (n =4 ) und Kontrollgruppe (n=7) geteilt. Nach L aparotomie und retrograder Ka- theterisierung der Arteria gastroduodenalis wurden 4 0 mg PL CG- Mikrosph ren und 0 ,0 5 m g Mit- omycin in Therapiegruppe,1,5 ml 0 ,9% Kochsalzl sung in Kontrollgruppe zum Vergleich *** Effektivit tsbeurteilung der beiden Methoden erfolgte14 Tage nach Katheter- isierung eine erneute kernspintomographische Volumenbestimm ung der Tum *** deutliche Tumorvolumenzunahme von2 7,12 fache in Kontrollgruppe wurde im Beobachtungszeitraum gese- *** Vergleich zur Kontrollgruppe zeigte die Therapiegruppe eine sehr geringere Tumorvolu- menzunahme von 2 ,87fache im Beobachtungszeitraum . Die Tum orvolumenzunahm e zwischen der beiden Gruppen zeigten beim T- Test einen signifikanten U nterschied (Ps Wachstum des L ebertum ors wurde unter Einsatz von PL CG- Mikrosph ren in der TACE im tierexperi- mentellen Modell deutlich gehemmt.

关键词： L eber Tumor TACE PL CG Mikrosph ren

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网络广告设计

2001年

作者：（美）托姆·福布斯（thom Forbes）江玉清译

本书对网络广告设计领域的杰出理念和优秀作品进行探索。以29家公司为例，为我们提供了业内人士的观点，其中涉及了最成功的网络广告人所使用的硬推销与软推销手法。

ISBN: (数字)7501932670

ISBN: (纸本)7501932670

关键词：因特网广告设计

来源：汇雅图书（南通市图书馆... 评论

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汇雅图书（南通市图书馆）

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前次分娩孕周对孕酮预防复发性早产的影响

世界核心医学期刊文摘（妇产科学分册） 2006年第1期2卷 21-22页

作者： spong C.Y. Meis P.j. thom E.A. 高雪莲 National Institute of Child Health and Human Development Bethesda MD United StatesDr.

Preterm birth occurs in 1 of 8 pregnancies and may result in significant morbidity and mortality. 17- alpha hydroxyprogesterone caproate (17- OHP caproate) has been found to be efficacious in reducing the risk of subsequent preterm delivery in women who have had a previous spontaneous preterm birth (sPTB). This analysis was undertaken to evaluate if 17- OHP caproate therapy works preferentially depending on the gestational age at previous spontaneous delivery. We hypothesized that treatment with 17- OHP caproate is more effective in prolonging pregnancy depending on the gestational age of the earliest previous preterm birth (20- 27.9, 28- 33.9 vs 34- 36.9 weeks). study design: This was a secondary analysis of 459 women with a previous sPTB enrolled in a randomized controlled trial evaluating 17- OHP caproate versus placebo. Effectiveness of 17- OHP caproate for pregnancy prolongation was evaluated based on gestational age at earliest previous delivery according to clinically relevant groupings (20- 27.9, 28- 33.9, and 34- 36.9 weeks). statistical analysis included the chi-square, Fisher exact, and Kruskal-Wallis tests, logistic regression, and survival analysis using proportional hazards. Results: Gestational age at earliest previous delivery was similar between women treated with 17- OHP caproate or placebo (P = .1). Women with earliest delivery at 20 to 27.9 weeks and at 28 to 33.9 weeks delivered at significantly more advanced gestational age if treated with 17- OHP caproate than with placebo (median 37.3 vs 35.4 weeks, P = .046 and 38.0 vs 36.7 weeks, P = .004, respectively) and were less likely to deliver s (42% vs 63% , P = .026 and 34% vs 56% , P = .005, respectively). Those with earliest delivery at 34 to 36.9 weeks were not significantly different between 17- OHP caproate or control. Conclusion: 17- OHP caproate therapy given to prevent recurrent PTB is associated with a prolongation of pregnancy overall, and especially for women with a previous sp

关键词：分娩孕周自然早产 Kruskal-Wallis检验复发性羟孕酮 logistic回归安慰剂治疗预防随机对照试验 Fisher

Metastasis to Paranasal sinuses as the First Presenting sign of Renal Cell Carcinoma

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