检索结果-南通市图书馆

The risk of prostate cancer on incidental finding of an avid prostate uptake on 2-deoxy-2-[^(18)F]fluoro-D-glucose positron emission tomography/computed tomography for non-prostate cancer-related pathology:A single centre retrospective study

引用

Asian Journal of Urology 2024年第1期11卷 33-41页

作者： Anthony Franklin Troy Gianduzzo Boon Kua David wong Louise McEwan James walters rachel Esler Matthew J.roberts Geoff Coughlina John w.Yaxley Department of Urology The Wesley HospitalBrisbaneQLDAustralia wesley Medical research BrisbaneQLDAustralia School of Medicine The University of QueenslandBrisbaneQLDAustralia Department of radiology Wesley Medical ImagingBrisbaneQLDAustralia Department of Urology Royal Brisbane and Women's HospitalBrisbaneQLDAustralia

Objective:To review the risk of prostate cancer(PCa)in men with incidentally reported increased intraprostatic uptake at 2-deoxy-2-[18F]fluoro-d-glucose positron emission tomography/computed tomography(18F-FDG pet/CT)ordered at Department of Urology,The wesley Hospital,Brisbane,QLD,Australia for non-PCa related ***:retrospective analysis of consecutive men between August 2014 and August 2019 presenting to a single institution for 18F-FDG pet/CT for non-prostate related conditions was *** were classified as benign,indeterminate,or malignant depending of the results of prostate-specific antigen(PSA),PSA velocity,biopsy histopathology,and three-Tesla(3 T)multiparametric MrI(mpMrI)Prostate Imaging reporting and Data System score,or gallium-68-prostate-specific membrane antigen(68Ga-PSMA)pet/CT ***:Three percent(273/9122)of men demonstrated 18F-FDG avidity within the ***-five percent(231/273)were further investigated,including with PSA tests(227/231,98.3%),3 T mpMrI(68/231,29.4%),68Ga-PSMA pet/CT(33/231,14.3%),and prostate biopsy(57/231,24.7%).results were considered benign in 130/231(56.3%),indeterminate in 31/231(13.4%),and malignant in 70/231(30.3%).PCa was identified in 51/57(89.5%)of the men who proceeded to biopsy,including 26/27(96.3%)men with Prostate Imaging reporting and Data System scores 4-5 mpMrI and six men with a positive 68Ga-PSMA pet/*** most common Gleason score on biopsy was greater than or equal to 4+5(14/51,27.5%).68Ga-PSMA pet/CT was concordant with the 18F-FDG findings in 26/33(78.8%).All 13 men with a positive concordant 18F-FDG,3 T mpMrI,and 68Ga-PSMA pet/CT had PCa on *** was no statistically significant difference in the 18F-FDG maximum standardized uptake value between the benign or malignant groups(5.7 vs.6.1;p=0.580).Conclusion:In this study,after an incidental finding of an avid intraprostatic lesion on 18F-FDG pet/CT,70 of the 231 cases(30.3%;0.8%of the entire cohort)had results c

关键词： Prostatecancer Positionemission tomography Multiparametric magneticresonance imaging Prostatebiopsy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of gap size and forest type on mineral nitrogen forms under different soil properties

引用

Journal of Forestry research 2020年第2期31卷 375-386页

作者： Ales Kucera Ladislav Holik Elena Munoz Cerro Jan petricek Department of Geology and Pedology Mendel University in BrnoZemedelska361300 BrnoCzech Republic Crop research Institute Drnovska507/7316106 Praha 6–RuzyneCzech Republic Institute for research in Sustainable Forest Management University of ValladolidPalenciaCastille and LeonSpain

Gaps play a key role in forest ecosystem development and result from either natural processes or targeted forest management *** aim of this study was to investigate the interrelationships of soil properties in each of three forest types and two treatments,and to identify factors that influence levels of soil mineral nitrogen *** relation between mineral nitrogen and factors of soil parameters and stand type(European beech,Norway spruce,mixed stand)categories were *** spruce forest type stored significant nitrogen in both mineral forms of ***,there was a significant linear dependence between N-NO3^-(nitrate anion)concentrations and cation exchange capacity(CEC)parameters such as base cation contents(S-CEC)and potential ureolytic activities(UreasePot),as well as between N-NH4^+(ammonium cation)concentrations and both hydrolytic acidities(Ha-CEC)and ureolytic *** dependence of N-NO3^-concentrations on S-CEC contents and UreasePot was negative,especially in adjacent *** dependence of N-NH4^+concentrations on Ha-CEC and UreasePot was week in the beech and mixed forest types while it was significantly positive in the spruce forest type.

关键词： NH4+ NO3^- Urease Protease European beech Norway spruce

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The value of 11C-choline pet/CT imaging for differentiating malignant from benign prostate lesions

The value of 11C-choline PET/CT imaging for differentiating ...

引用

首届全国分子核医学暨分子影像学学术交流会

作者： LI XIN, LIU QINGwEI pet/CT CENTEr OF SHANDONG PrOVINCIAL HOSPITAL

Objective 11C-choline is a new radiopharmaceutical which has a high uptake in prostate tumor and negligible secretion into the urinary system. The aim of this study was to investigate the potential of 11C-choline pet/CT imaging for differentiating prostate cancer from benign prostate hyperplasia. Methods A total of 45 patients with prostate lesions underwent 11C-choline pet/CT imaging. pet/CT imaging were

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

淋巴瘤18F-FDG pet/CT显像临床应用指南(2016版)

引用

中华核医学与分子影像杂志 2016年第5期36卷 458-460页

作者：中华医学会核医学分会pet与分子影像学组中华医学会核医学分会pet与分子影像学组

一、概述恶性淋巴瘤在我国是发病率增速最快的肿瘤之一,已逐步居于各类癌症发病率和死亡率前10位。F-2-氟-2-脱氧-D-葡萄糖(FDG)pet显像已用于淋巴瘤患者的初始分期、再分期、疗效评价及随访。2007年美国Journal of Clinical Oncology...

一、概述恶性淋巴瘤在我国是发病率增速最快的肿瘤之一,已逐步居于各类癌症发病率和死亡率前10位。F-2-氟-2-脱氧-D-葡萄糖(FDG)pet显像已用于淋巴瘤患者的初始分期、再分期、疗效评价及随访。2007年美国Journal of Clinical Oncology发表了恶性淋巴瘤疗效评价的修订标准,对国际工作组(IwG)淋巴瘤疗效评价标准(1999年版)进行了修订,在淋巴瘤疗

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Quantification of the impact of TOF and PSF on pet images using the noise-matching concept: clinical and phantom study

引用

Nuclear Science and Techniques 2017年第11期28卷 258-265页

作者： M. Shekari P. Ghafarian S. Ahangari M. r. Ay Department of Medical Physics and Biomedical Engineering Tehran University of Medical Sciences Tehran Iran research Center for Molecular and Cellular Imaging Tehran University of Medical Sciences Tehran Iran Chronic respiratory Diseases research Center National Research Institute of Tuberculosis and Lung Diseases(NRITLD) Shahid Beheshti University of Medical SciencesTehran Iran pet/CT and Cyclotron Center Masih Daneshvari HospitalShahid Beheshti University of Medical Sciences Tehran Iran

This study was to assess quantitatively the accuracy of ^(18)F-FDG pet/CT images reconstructed by TOF+PSF and TOF only, considering the noise-matching concept to minimize probable bias in evaluating algorithm performance caused by noise. pet images of similar noise level were considered. Measurements were made on an inhouse phantom with hot inserts of Φ10–37 mm, and oncological images of 14 patients were analyzed. The pet images were reconstructed using the OSEM, OSEM+TOF and OSEM+TOF+PSF algorithms. Optimal reconstruction parameters including iteration, subset, and FwHM of post-smoothing filter were chosen for both the phantom and patient data. In terms of quantitative accuracy, the recovery coefficient(rC) was calculated for the phantom pet images. The signal-to-noise ratio(SNr),lesion-to-background ratio(LBr), and SUV_(max)were evaluated from the phantom and clinical data. The smallest hot insert(Ф10 mm) with 2:1 activity concentration ratio could be detected in the pet image reconstructed using the TOF and TOF+PSF algorithms, but not the OSEM algorithm. The relative difference for SNr between the TOF+PSF and OSEM showed significantly higher values for smaller sizes, while SNr change was smaller for Ф22–37 mm inserts both 2:1 and 4:1 activity concentration ratio. In the clinical study, SNr gains were 1.6 ± 0.53 and 2.7 ± 0.74 for the TOF and TOF+PSF, while the relative difference of contrast was 17 ± 1.05 and 41.5 ± 1.85% for the TOF only and TOF+PSF, respectively. The impact of TOF+PSF is more significant than that of TOF reconstruction, in smaller inserts with low activity concentration ratio. In the clinical pet/CT images, the use of the TOF+PSF algorithm resulted in better SNr and contrast for lesions, and the highest SUV_(max)was also seen for images reconstructed with the TOF+PSF algorithm.

关键词： Time of flight (TOF) Point spread function(PSF) Lesion detectability pet Quantification Image reconstruction SUV

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Atmospheric and ecosystem big data providing key contributions in reaching United Nations’Sustainable Development Goals

引用

Big Earth Data 2021年第3期5卷 277-305页

作者： Markku Kulmala Anna Lintunen Ilona Ylivinkka Janne Mukkala rosa rantanen Joni Kujansuu Tuukka petäjä Hanna K.Lappalainen Institute for Atmospheric and Earth System research(INAr)/Physics Faculty of ScienceUniversity of HelsinkiFinland Joint International research Laboratory of Atmospheric and Earth System Sciences School of Atmospheric SciencesNanjing UniversityNanjingChina Aerosol and Haze Laboratory Beijing Advanced Innovation Center for Soft Matter Sciences and EngineeringBeijing University of Chemical Technology(BUCT)BeijingChina Faculty of Geography Lomonosov Moscow State UniversityMoscowRussia Tyumen State University Department of CryosphereTyumenRussia fGuangzhou Institute of Geography Guangzhou Academy of SciencesGuangzhouChina Institute for Atmospheric and Earth System research University of Helsinki Finland Aerospace Information research Institute Chinese Academy of SciencesBeijingChina

Big open data comprising comprehensive,long-term atmospheric and ecosystem in-situ observations will give us tools to meet global grand challenges and to contribute towards sustainable *** Nations’Sustainable Development Goals(UN SDGs)provide framework for the *** present synthesis on how Station for Measuring Earth Surface-Atmosphere relations(SMEAr)observation network can contribute to UN *** describe SMEAr II flagship station in Hyytiälä,*** more than 1200 variables measured in an integrated manner,we can under-stand interactions and feedbacks between biosphere and *** contributes towards understanding impacts of climate change to natural ecosystems and feedbacks from ecosys-tems to *** benefits of SMEAr concept are highlighted through outreach project in Eastern Lapland utilizing SMEAr I observations from Värriöresearch *** contrast to boreal environment,SMEAr concept was also deployed in *** underline the benefits of comprehensive observations to gain novel insights into complex interactions between densely popu-lated urban environment and *** observations enable work towards solving air quality problems and improve the quality of life inside *** network of comprehensive stations with various measurements will enable science-based deci-sion making and support sustainable development by providing long-term view on spatio-temporal trends on atmospheric compo-sition and ecosystem parameters.

关键词： Grand challenges in-situ observations big open data SMEAr concept SDGs

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

research agenda for the russian Far East and utilization of multiplatform comprehensive environmental observations

引用

International Journal of Digital Earth 2021年第3期14卷 311-337页

作者： Tuukka petäjä Kirill S.Ganzei Hanna K.Lappalainen Ksenia Tabakova risto Makkonen Jouni räisänen Sergey Chalov Markku Kulmala Sergej Zilitinkevich petr Ya Baklanov renat B.Shakirov Natalia V.Mishina Evgeny G.Egidarev Igor I.Kondrat’ev Institute for Atmospheric and Earth System research/Physics Faculty of ScienceUniversity of HelsinkiHelsinkiFinland Department of Cryosphere Tyumen State University TyumenRussia Pacific Geographical Institute of the Far Eastern Branch of russian Academy of Sciences VladivostokRussia Finnish Meteorological Institute HelsinkiFinland Faculty of Geography Lomonosov Moscow State UniversityMoscowRussia V.I.Ilyichov Pacific Oceanological Institute of the Far Eastern Branch of russian Academy of Sciences VladivostokRussia

The russian Far East is a region between China and the russian Arctic with a diverse climatological,geophysical,oceanic,and economical *** southern region is located in the Far East monsoon sector,while the northern parts are affected by the Arctic Ocean and cold air masses penetrating far to the *** economic activities and traffic connected to the China Belt and road Initiative together with climate change are placing an increased pressure upon the russian Far East *** is an urgent need to improve the capacity to measure the atmospheric and environmental pollution and analyze their sources and to quantify the relative roles of local and transported pollution emissions in the *** the paper,we characterize the current environmental and socio-economical landscape of the russian Far East and summarize the future climate scenarios and identify the key regional research *** discuss the research infrastructure concept,which is needed to answer the identified research *** integrated observations,filling in the critical observational gap at the Northern Eurasian context,are required to provide state-of-the-art observations and enable follow-up procedures that support local,regional,and global decision making in the environmental context.

关键词： russian Far East greenhouse gases aerosol particles insitu observations Earth observation data

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

功能化纤维素:pet纤维沸石分子筛复合材料对神经毒剂的解毒性研究(英文)

引用

无机材料学报 2012年第3期27卷 332-336页

作者： Agarwal Satya r Sundarrajan Subramanian ramakrishna Seeram Department of Mechanical Engineering Engineering Drive National University of Singapore King Saud University Institute of Materials research and Engineering National University of Singapore Singapore 117602 Singapore

Presently activated carbon is used as an adsorptive material for chemical and biological warfare agents. It possess excellent surface properties such as large surface area, fire-resistance and plenty availability, but has disadvantages such as its heavy weight, low breathability (after adsorption of moisture) and disposal. In this paper, we propose to utilize novel electrospun polymeric nanostructures having zeolites as catalyst materials. In this respective, the electrospun polymer nanofibers would serve as the best possible substitutes to activated carbon based protective clothing applications. This is the first in the literature that reports the integration of these types of catalysts with nanofiberous membranes. Electrospinning of cellulose/polyethylene terephthalate (pet) blend nanofibers has been carried out. Zeolite catalysts (Linde Type A and Mordenite) for the detoxification of nerve agent stimulant-paraoxon, were prepared due to their relative simplicity of synthesis. The catalysts were then coated onto nanofiber membranes and their morphology was confirmed using SEM. This is the first report on the coating of nanofibers with zeolites and their successful demonstration against nerve agent stimulant. The UV absorption spectra clearly show the detoxification ability of the functionalized fibers and their potential to be used in textiles for protection and decontamination.

关键词：摘要编辑部编辑工作 pet

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

多模态pet/MrI影像组学鉴定帕金森病和多系统萎缩

引用

国际医学放射学杂志 2024年第2期 251-251页

作者： J.J.Sun C.Cong X.P.Li w.C.Zhou r.X.Xia H.Liu 侯唯姝

摘要目的基于多模态pet/MrI影像组学和临床特征建立鉴别帕金森病（PD）与多系统萎缩（MSA）的机器学习模型。方法纳入119例病人（PD 81例，MSA 38例）行脑pet/

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

匈牙利反刍动物饲养中农副产品利用的现状与未来

引用

世界农业 1988年第4期 48-50页

作者： Margit Gáspar ,pet.r Horvath ,齐广海

匈牙利1981年开始了用农业和工业副产品(如麦秸、甜菜渣和玉米秆)饲喂家畜的大型研究计划。虽然匈牙利的家畜组成与其他国家不同,但上述副产品在任何地方都可用于反刍动物饲养。 1981年,匈牙利科学院组织调查了生物量(biomass)的生产和... 详细信息

匈牙利1981年开始了用农业和工业副产品(如麦秸、甜菜渣和玉米秆)饲喂家畜的大型研究计划。虽然匈牙利的家畜组成与其他国家不同,但上述副产品在任何地方都可用于反刍动物饲养。 1981年,匈牙利科学院组织调查了生物量(biomass)的生产和利用现状,并研究了进一步发展的可能性及其限制因素。目前,每年作为饲料的副产品有1000—2000万吨,预计到本世纪末可增加到4000—4500万吨。由于反刍动物具有大量利用副产品(特别是高纤维素物质)的能力,所以,增加农业和工业副产品的饲喂量是反刍动物饲养中降低生产成本最有希望的办法。

关键词：甜菜渣家畜动物饲养农畜糟渣类饲料酒糟副产品匈牙利阉牛农业生产畜牧生产可消化粗蛋白肉用母牛

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：