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| 1 | Effects of premedication with Pronase for endoscopic ultrasound of the stomach: A randomized controlled trial显示文摘AIM To analyze the effects of premedication with Pronase for endoscopic ultrasound(EUS) examination of the stomach.METHODS This was a prospective, randomized and controlled clinical study. All patients were randomly assigned to either the Pronase group or placebo group. The pretreatment solution was a mixed solution of 20000 U of Pronase and 60 m L sodium bicarbonate solution in the Pronase group, while an equal amount of sodium bicarbonate solution was administered to the placebo group. All operators, image evaluators and experimental recorders in EUS did not participate in the preparation and allocation of pretreatment solution. Two blinded investigators assessed the obscurity scores for the EUS images according to the size of artifacts(including ultrasound images of the gastric cavity and the gastric wall). Differences in imaging quality, the duration of examination and the usage of physiological saline during the examination process between the Pronase group and the control group were compared.RESULTS No differences existed in patient demographics between the two groups. For the gastric cavity, the Pronase group had significantly lower mean obscurity scores than the placebo group(1.0476 ± 0.77 vs 1.6129 ± 0.96, respectively, P = 0.000). The mean obscurity scores for the gastric mucosal surface were significantly lower in the Pronase group than the placebo group(1.2063 ± 0.90 vs 1.7581 ± 0.84, respectively, P = 0.001). The average EUS procedure duration for the Pronase group was 11.60 ± 3.32 min, which was significantly shorter than that of the placebo group(13.13 ± 3.81 min, P = 0.007). Less saline was used in the Pronase group than the placebo group, and the difference was significant(417.94 ± 121.38 m L vs 467.42 ± 104.52 mL, respectively, P = 0.016).CONCLUSION The group that had Pronase premedication prior to the EUS examination had clearer images than the placebo group. With Pronase premedication, the examination time was shorter, and the amount of saline used during the EUS examination was less. | Guo-Xin Wang Xiang Liu Sheng Wang Nan Ge Jin-Tao Guo Si-Yu Sun | 2016 | World Journal of Gastroenterology2016,22,48: | 8 |
| 2 | The non-destructive analysis of ancient jade artifacts unearthed from the Liangzhu sites at Yuhang,Zhejiang显示文摘Samples of the jade artifacts unearthed from the Liangzhu sites at Yuhang (Fanshan,Yaoshan, Huiguanshan and Tangshan) of Zhejiang province were described. The chemical composition, phase and jade structure of a hundred and more intact samples were analyzed by the non-destructive techniques of PIXE, XRD and laser Raman spectroscopy. Results showed that the minerals of the jade artifacts mostly belonged to tremolite and tremolite-actinolite. Relationship of the civilization development in the Neolithic age and the application of tremolite type mineral in jade artifacts was discussed. The contents of rare and trace elements in tremolite jade artfacts and in mineral samples were measured for the first time. The possible mineral sources of these tremolite type jade artifacts were discussed. | GAN FuXi1,3, CAO JingYan2, CHENG HuanSheng3, Gu DongHong1, RUI GuoYao2, FANG XiangMing2, DONG JunQing1 & ZHAO HongXia1 1Scientific Archeology Center, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China 2 Research Institute of Cultural Relics and Archeology of Zhejiang, Hangzhou 310014, China 3 Fudan University, Shanghai 200433, China | 2010 | Science China(Technological Sciences)2010,53,12: | 8 |
| 3 | Magnetic resonance angiography for the primary diagnosis of pulmonary embolism: A review from the international workshop for pulmonary functional imaging显示文摘Pulmonary contrast enhanced magnetic resonance angiography(CE-MRA) is useful for the primary diagnosis of pulmonary embolism(PE). Many sites have chosen not to use CE-MRA as a first line of diagnostic tool for PE because of the speed and higher efficacy of computerized tomographic angiography(CTA). In this review, we discuss the strengths and weaknesses of CEMRA and the appropriate imaging scenarios for the primary diagnosis of PE derived from our unique multiinstitutional experience in this area. The optimal patient for this test has a low to intermediate suspicion for PE based on clinical decision rules. Patients in extremis are not candidates for this test. Younger women(< 35 years of age) and patients with iodinated contrast allergies are best served by using this modality We discuss the history of the use of this test, recent technical innovations, artifacts, direct and indirect findings for PE, ancillary findings, and the effectiveness(patient outcomes) of CE-MRA for the exclusion of PE. Current outcomes data shows that CE-MRA and NM V/Q scans are effective alternative tests to CTA for the primary diagnosis of PE. | Nanae Tsuchiya Edwin JR van Beek Yoshiharu Ohno Hiroto Hatabu Hans-Ulrich Kauczor Andrew Swift Jens Vogel-Claussen Jürgen Biederer James Wild Mark O Wielpütz Mark L Schiebler | 2018 | World Journal of Radiology2018,10,6: | 4 |
| 4 | Diagnostic problems in two-dimensional shear wave elastography of the liver显示文摘Two-dimensional shear wave elastography(2D-SWE)is used in the clinical setting for observation of the liver.Unfortunately,a wide spectrum of artifactual images are frequently encountered in 2D-SWE,the precise mechanisms of which remain incompletely understood.This review was designed to present many of the artifactual images seen in 2D-SWE of the liver and to analyze them by computer simulation models that support clinical observations.Our computer simulations yielded the following suggestions:(1)When performing 2D-SWE in patients with chronic hepatic disease,especially liver cirrhosis,it is recommended to measure shear wave values through the least irregular hepatic surface;(2)The most useful 2D-SWE in patients with focal lesion will detect lesions that are poorly visible on B-mode ultrasound and will differentiate true tumors from pseudo-tumors(e.g.,irregular fatty change);and(3)Measurement of shear wave values in the area posterior to a focal lesion must be avoided. | Hiroko Naganuma Hideaki Ishida Atsushi Uno Hiroshi Nagai Hidekatsu Kuroda Masahiro Ogawa | 2020 | World Journal of Radiology2020,12,5: | 3 |
| 5 | 清代前中期东吴文人与西学(下)显示文摘三东吴文人诗文所见西方器物晚明至清前中期,与传教士一并进人中土的不仅是天主神学和自然科学,同时还有各种器物,它们在晚明给予传教士的裨益,超过了任何其他东西。三棱镜、玻璃珠、西洋画、计时器、地球仪、 | 刘耘华 | 2013 | 基督教文化学刊2013,,2: | 2 |
| 6 | 道格拉斯·恩格尔巴特:不只是鼠标之父显示文摘2013年7月2日,被誉为'鼠标之父'的道格拉斯·恩格尔巴特逝世。直到这一天,人们才知道是谁发明了鼠标这个不可或缺的小东西。但事实上,恩格尔巴特的贡献远远不止于此。他是文字处理系统和互联网开发方面的先驱,更是人机交互领域的大师。他的梦想是提升人类智能,通过计算机协作解决世界问题。然而,他却因理念过于超前没能得到应有的支持。但这并没有妨碍他一直以来默默耕耘,为人类美好的明天付出努力。他值得我们永远铭记。 | Howard Rheingold Cecilia Wei | 2013 | 新东方英语(中英文版)2013,0,12: | 2 |
| 7 | Enhanced segmentation of gastrointestinal polyps from capsule endoscopy images with artifacts using ensemble learning显示文摘BACKGROUND Endoscopy artifacts are widespread in real capsule endoscopy(CE)images but not in high-quality standard datasets.AIM To improve the segmentation performance of polyps from CE images with artifacts based on ensemble learning.METHODS We collected 277 polyp images with CE artifacts from 5760 h of videos from 480 patients at Guangzhou First People’s Hospital from January 2016 to December 2019.Two public high-quality standard external datasets were retrieved and used for the comparison experiments.For each dataset,we randomly segmented the data into training,validation,and testing sets for model training,selection,and testing.We compared the performance of the base models and the ensemble model in segmenting polyps from images with artifacts.RESULTS The performance of the semantic segmentation model was affected by artifacts in the sample images,which also affected the results of polyp detection by CE using a single model.The evaluation based on real datasets with artifacts and standard datasets showed that the ensemble model of all state-of-the-art models performed better than the best corresponding base learner on the real dataset with artifacts.Compared with the corresponding optimal base learners,the intersection over union(IoU)and dice of the ensemble learning model increased to different degrees,ranging from 0.08%to 7.01%and 0.61%to 4.93%,respectively.Moreover,in the standard datasets without artifacts,most of the ensemble models were slightly better than the base learner,as demonstrated by the IoU and dice increases ranging from-0.28%to 1.20%and-0.61%to 0.76%,respectively.CONCLUSION Ensemble learning can improve the segmentation accuracy of polyps from CE images with artifacts.Our results demonstrated an improvement in the detection rate of polyps with interference from artifacts. | Jun-Xiao Zhou Zhan Yang Ding-Hao Xi Shou-Jun Dai Zhi-Qiang Feng Jun-Yan Li Wei Xu Hong Wang | 2022 | World Journal of Gastroenterology2022,28,41: | 2 |
| 8 | Coronary CT angiography:Dose reduction strategies显示文摘With the introduction of 64- and post-64 slice computed tomography(CT)technology,coronary CT angiography has been increasingly used as a less invasive modality for the diagnosis of coronary artery disease.Despite its high diagnostic value and promising results compared to invasive coronary angiography,coronary CT angiography is associated with high radiation dose,leading to potential risk of radiation-induced cancer.A variety of dose-reduction strategies have been reported recently to reduce radiation dose with effective outcomes having been achieved.This article presents an overview of the various methods currently used for radiation dose reduction. | Akmal Sabarudin Zhonghua Sun | 2013 | World Journal of Cardiology2013,5,12: | 2 |
| 9 | 清代前中期东吴文人与西学(上)显示文摘东吴的历史空间蕴涵,其大可指江浙皖三省疆域,其小则可单指苏州。本文所云'东吴',特指明清时期吴文化的中心地带,即苏州、松江、常州三府所辖之地,具体而言,即吴县、长洲、常熟、吴江、昆山、嘉定及太仓州(清雍正二年起,曾兼辖崇明、嘉定、宝山、镇洋四县);华亭(松江府治所在)、上海、青浦、奉贤、金山、南汇、川沙;武进、无锡、宜兴、江阴、阳湖、溧阳等州县。 | 刘耘华 | 2013 | 基督教文化学刊2013,,1: | 1 |
| 10 | Book Information显示文摘The Cultural Gene of Ancient Chinese SpaceAuthor:Zhang Jie Year:2012Publisher:Tsinghua University Press ISBN:9787302273646(413 pages,in Chinese)From multiple perspectives of ancient astronomy,cultural geography and mountain modes,etiquette culture and system,artifacts and space archaeology,traditional painting,geomantic theory,etc.,this book systematically explores the main origins,concepts,con- | Li Caige | 2015 | China City Planning Review2015,24,1: | 0 |
| 11 | Pseudohyperkalemia in thrombocythemia显示文摘 | 麦永礼 莫俊强 | 2001 | Chinese Medical Journal2001,,11: | 0 |
| 12 | Review of essential understanding of ultrasound physics and equipment operation显示文摘Ultrasound(US) is being extensively used an imaging tool in regional anesthesia(RA) and pain practice. Although it was first used in a regional block in 1978, it was only in 1994 that the first direct use of US in RA was reported. Like any other medical tool, its utility is only realized when the performing physician is able to understand the principles behind its application. Efficient use of US also requires an understanding of physical variables which can be suitable modified to produce a clear image of the structure of importance. This brief narrative review summarises the advantages of US in RA and pain practice over the conventionally used localising or imaging tools. The second section deals with the physics behind US. It highlights the necessary physical concepts such as wavelength, frequency and generation of US waves. It also informs the reader about the possible US and tissue interactions, use of US transducers and their differences. The third section deals with understanding the control variables in a typical US machine and how they could be modified to improve the image quality. The final section highlights the various artifacts that could be associated. | Harsha Shanthanna | 2014 | World Journal of Anesthesiology2014,3,1: | 0 |
| 13 | 博物馆文化和商业的交锋(英文)显示文摘With China's millennia of records, artifacts, relics, and stories, museums are a haven of peace. But, hey, history isn't cheap. Commercializing museums by capitalizing an 'cultural products' has become the new mainstream for Chinese museums—going way beyond a simple Starbucks in the Forbidden City. | 孙佳慧 | 2016 | The World of Chinese2016,0,5: | 0 |
| 14 | CEREBELLAR INFARCTION ANALYSIS OF 22 CASES显示文摘Twenty-two cases of cerebellar infarction were diagnosed by clinical findings, computerized tomography (CT), magnetic resonance image (MRI) and autopsy. Most of the infarctions occurred in the territory of the posterior inferior cerebellar artery (18/22). The most common and earliest symptoms were dizziness or vertigo (19/22), which occurred repeatedly and were accompanied by nausea and vomiting. The symptoms and signs of cerebellar lesion such as unsteady gait, limb and/or trunk ataxia, dysarthria were also the main clinical manifesta tions. However,in a number of patients there were no cerebellar symptoms or signs (9/22). Rapid deterioration of consciousness suggested acute compression of the brainstem,where the prognosis would be poor. CT scan made it possible to diagnose cerebeilar infarction in the patients. But CT is not a satisfactory instrument in identifying this disease. MRI without bony artifacts from the posterior fossa has much higher resolution and renders the infarction to be visualized | 龙洁 梁燕 | 1994 | Chinese Medical Journal1994,,3: | 0 |
| 15 | 体验苏格兰风情显示文摘[美文欣赏]In order to see and discover the true soul of Scotland today,what forged the character of this splendid region,we have to go towards the northern regions,to the Grampian Mountains.Beautiful and unspoiled,it was difficult to farm.The Scots subdued the environment with simple spades and strong arms.The history of this ancient struggle。 | 本刊编辑部 | 2015 | 语数外学习(高中版)(中)2015,0,2: | 0 |
| 16 | Cultural Exchange Along the Silk Road:Masterpieces of the Tubo Period显示文摘Those on display in this exhibition were more than 120 delicate artifacts from all over the world.It was the first exhibition of cultural relics with the theme of Tubo in the world. | | 2019 | China & The World Cultural Exchange2019,85,8: | 0 |
| 17 | Effect of head tilt on repeatability of optic nerve head parameters using Cirrus spectral-domain optical coherence tomography显示文摘AIM: To assess the repeatability of measuring optic nerve head(ONH) parameters using the Cirrus optical coherence tomography(OCT), as well as to assess the effect of head tilt on these measurements.METHODS: Thirty healthy participants with no evidence of glaucoma were recruited for the study. Visual acuity, intraocular pressure, standard automated perimetry and ocular examination were performed for each participant. One eye was then randomly selected and scanned undilated with the Cirrus OCT in 3 positions(neutral, 30° right tilt and 30° left tilt).RESULTS: Data collected from 29 eyes were used for analysis. One patient was omitted due to poor scan quality. The repeatability of the ONH parameters was analyzed using analysis of variance, coefficient of variation(COV) and intraclass correlation coefficient(ICC). Analysis of variance showed no statistically significant difference between 3 scans in a single position. There was good agreement between measurements(ICC 0.919-0.996, COV 1.94%-5.48%).Even with the presence of head tilt, repeated scans in the 3 positions showed good agreement as well(ICC 0.888-0.996, COV 2.04%-5.39%).CONCLUSION: Serial measurements of ONH parameters using the Cirrus OCT are found to have good repeatability. The ONH parameters with Cirrus OCT also maintain good repeatability despite head tilt. | Lilian Hui Li Koh Muhammad Amir Ismail Sae Cheong Yap Elizabeth Poh Ying Wong Leonard Wei Leon Yip | 2016 | International Journal of Ophthalmology(English edition)2016,9,8: | 0 |
| 18 | 萨斯基亚·努尔·范·伊姆霍夫:模式、霉菌、不拘一格显示文摘在英语中"mold"一词有着两个相对的意思:它可能表示铸件、模型、形式,也可能指霉菌和霉臭。这个词包含的明显悖论暗示了人们为创造不朽的、可复制形式的不懈努力。而这种努力常常以失控、被篡改或淹没告终。博物馆将各种物体、人造物和生物分子擢升至满是永恒的形式与种类的理想世界之中。每一件进入博物馆的东西似乎神奇地脱离了死亡的命运,给我们带来永恒的希望。 | 莎拉·吉安尼尼 周巧 | 2016 | 艺术界2016,0,2: | 0 |
| 19 | 谢丽尔·多尼根:场景与广告显示文摘上世纪90年代就像是在文化艺术的肠胃中还未被消化的食物。即使与那个时代的审美放在一起,仍然让人不知该如何理解它们,挪用和批判?给怀旧打打蜡?还是插科打诨?从什么时候开始,技术已经变得无处不在以至于常常被我们忽略,而不是像之前那样醉心其中。 | 顾虔凡 | 2016 | 艺术界2016,0,2: | 0 |
| 20 | Symposium on Shi Nai’an, Author of Shui Hu Zhuan显示文摘discusses problems concerning artifacts and materials related to Shi Naian at the symposium held in Beijing from August 21 to 23, 1982. A number of scholars evaluated the historical documents discovered recently in Jiangsu Province. The majority of participants at the meeting affirmed the authenticity of some of the materials, and noted that these had advanced research related to Shi Naian. It was also pointed out that there are still questionable points in the various documents, that no necessary connection between the newly discovered materials and Shi Naian, author of Shui Hu Zhuan, has yet been discovered, and that it is too early to conclude that Shi Yanduan is Shi Naian. | 杨志广 M.M.Soens | 1983 | Social Sciences in China1983,13,1: | 0 |