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使用标准参数的64、16、4层和单层CT常规头颅平扫影像质量和后颅窝伪影的比较研究

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国际医学放射学杂志 2008年第5期31卷 422-423页

作者： B.Ertl-Wagner L.Eftimov J.Blume r.bruening C.Becker J.Cormack 郭雪梅 Institute of Clinical radiology University of Munich-Campus Grosshadern Marchioninistr. 15 81377Munich Germany.

后颅窝伪影是头颅CT应用中的一大限制。为研究有更小准直的新型CT系统在头颅CT平扫（non—enhanced CT，NECT）中的优缺点，采用头颅常规扫描序列研究了单层，4、16、64层cT的影像质量，后颅窝伪影和脑实质轮廓的显示情况。25例连续病... 详细信息

后颅窝伪影是头颅CT应用中的一大限制。为研究有更小准直的新型CT系统在头颅CT平扫（non—enhanced CT，NECT）中的优缺点，采用头颅常规扫描序列研究了单层，4、16、64层cT的影像质量，后颅窝伪影和脑实质轮廓的显示情况。25例连续病人前瞻性地纳入研究，在64层CT上行NECT检查。年龄与眭别相匹配的另外3组各25例病人接受了单层，4、16层NECT检查。每台CT设备均采用标准的CT常规扫描参数对后颅窝进行螺旋扫描，由于准直宽度和放射剂量不同，扫描参数有差异。

关键词：后颅窝影像质量伪影

Metal separations of interest to the Chinese metallurgical industry

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Journal of rare Earths 2010年第S1期28卷 22-29页

作者： S.r.Izatt N.E.Izatt r.L.bruening IBC Advanced Technologies Inc.856 E.Utah Valley DriveAmerican ForkUT 84003U.S.A.

IBC Advanced Technologies’ Molecular recognition Technology(MrT) SuperLig products selectively and rapidly bind with target species enabling their selective removal from *** MrT process can produce a high purity separation product of maximum added value at a competitive *** products have high selectivity for many target species which can include metal ions,anions,and neutral *** operation,the SuperLig product is first placed in a packed column.A solution containing a mixture of the target species and other chemical species is then passed through the *** target species is removed selectively by the SuperLig product,the column is washed to remove residual feed solution,and the target species is recovered by a minimal quantity of *** result is a pure and concentrated species that can be kept for its value or disposed of *** process is environmentally and ecologically friendly with no organic solvents being *** paper provides a review of some examples of applications of MrT to separations of interest to the Chinese metallurgical *** are several applications of MrT,including Pd separations from Pt metal refinery streams and low-grade spent catalyst wastes,rh recovery from spent auto catalyst and other feeds,re removal from selected impurity ions,Cd removal from Co electrolyte,Bi removal from Cu electrolyte,In and Ge separations from difficult matrices,and removal of bivalent first transition series and other metal ions from acid mine drainage(Berkeley Pit,Montana).Finally,the potential application of MrT to separations involving the recovery of rare earth metals and Li from low-level waste solutions and end-of-life products is discussed.

关键词： selective and environmentally friendly metal separations molecular recognition technology SuperLig platinum group metals minor metals transition series metals rhenium cadmium indium germanium bismuth rare earth metals lithium

Processing, recovery and Analysis of Precious Metals Using Molecular recogntion Technology

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贵金属 2012年第A1期33卷 88-95页

作者： IZATT Steven r. bruening ronald L. IZATT Nell E. IBC Advanced Technologies Inc.856 East Utah Valley DriveAmerican ForkUT 84003USA

IBC Advanced Technologies' Molecular recognition Technology(MrT) products,trade named SuperLig,selectively and rapidly bind with target metal ions to remove them from *** MrT process can produce a high purity separation product of maximum added value at low *** this paper,applications of MrT in the precious metals industry,including selective commercial separations involving Au,Pd,Pt,rh,and ru,are described and *** of MrT to the analytical determination of precious metals is *** use of MrT in recovering precious metals from end-of-life(EOL) products is discussed.

关键词： selective metal separations molecular recognition technology metal recovery from waste electronics palladium platinum rhodium ruthenium gold analytical determinations

Bestimmung des regionalen Blutvolumens (rBV) in Meningeomen: Vergleich von Echoplanar-und Gradientenechosequenzen

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2004年第6期24卷 610-614页

作者：吴仁华 roland bruening Christian Berchtenbreiter Jügen Weber 郎志谨 Maximilian reiser Abteilung für radiologie Medizinische Fakultt der Universitt ShantouShantou 515041ChinaInstitut für Diagnostische RadiologieKlinikum GrophadernLudwig-Maximilians-UniversittMünchen 81377Germany Institut für Diagnostische radiologie Klinikum GrophadernLudwig-Maximilians-UniversittMünchen 81377Germany Abteilung für radiologie Medizinische Universitt DalianDalian 116011

Summary: The purpose of this study was to evaluate relative regional blood volume (rCBV) in meningioma and compare the utility of reconstruction using both gradient-echo sequence and echo-planar-imaging (EPI) *** patients with meningiomas were studied on a Siemens 1.5-T scanner. During the gradient-echo sequence (n=12) and EPI sequence (n=6), a bolus ^(0.2 mmol/kg) of Gd-DTPA was injected mechanically with a flow rate of 5 ml/second. Image processing of dynamic data was performed on a pixel-by-pixel basis. The ratio of tumor rCBV/gray matter rCBV was 3.01±1.18 (3.07 ± 1.39 in gradient sequence and 2.84 ± 0.94 in EPI sequence). The ratio of gray matter/ white matter as the reference tissue had a mean of 2.79 ± 0.76 using the FLASH sequence, and a mean of 3.04 ± 1.31 using EPI. These differences were not statistically signifcant (P>0.5, t-test). According to the ratio of tumor rCBV/gray matter rCBV, a mean value, 14.5 ml/100 g, of rCBV in meningiomas was calculated. Compared with gray matter, increased inhomogeneous rCBV was observed in meningioma. Based on the two different sequences, no bias can be observed in our rCBV reconstruction.

关键词： magnetic resonance imaging meningioma blood volume

Harvesting legume genomes for disease resistance traits

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Harvesting legume genomes for disease resistance traits

脑膜瘤相对血流量Mr定量检测:梯度回波与平面回波序列法的比较

第十三届全国植物基因组学大会

作者： r.Varma Penmetsa Benjamin rosen Noelia Carrasquilla-Garcia George bruening Douglas r Cook Department of Plant Pathology University of CaliforniaDavisCA 95616 USA

We have used comparative genomics to link many of world’s most important crop legumes,including soybean,common bean,cowpea,pigeonpea,peanut,lupin, chickpea,Medicago and lentil.A comparative network of 1,100 low-copy ...

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中华放射学杂志 2005年第6期39卷 661-665页

作者：吴仁华 roland bruening Christian Berchtenbreiter Jügen Weber 郎志谨 Maximilian reiser 汕头大学医学院第二附属医院放射科 515041 Department of radiology Grosshadern HospitalUniversity of MunichGermany 大连医科大学附属第一医院放射科

目的通过对梯度回波序列法与平面回波(echoplanerimaging,EPI)序列法重建脑膜瘤相对血流量图的比较,对脑膜瘤相对血流量的定量检测进行评价。方法应用西门子1.5TMr仪对18例脑膜瘤病人进行检查,获取常规的T1WI、T2WI和增强T1WI,以及动态... 详细信息

目的通过对梯度回波序列法与平面回波(echoplanerimaging,EPI)序列法重建脑膜瘤相对血流量图的比较,对脑膜瘤相对血流量的定量检测进行评价。方法应用西门子1.5TMr仪对18例脑膜瘤病人进行检查,获取常规的T1WI、T2WI和增强T1WI,以及动态的磁顺应敏感图像(T2WI梯度回波序列或SEEPI序列)。在采集动态的磁顺应敏感图像期间(梯度回波法12例,EPI法6例),应用程控注射器以每秒5ml的流率注入钆喷替酸葡甲胺(GdDTPA)(0.2mmol/kg)。应用优视系统(advancedvisualsystem,AVS)软件逐点处理动态的磁顺应敏感资料,对重建的全部相对血流量图作感兴趣区分析,通过借鉴文献中脑灰质血流量数值,定量计算脑膜瘤的相对血流量。结果肿瘤相对血流量与脑灰质相对血流量的比率是3.01±1.18(梯度回波序列法为3.07±1.39;EPI序列法为2.84±0.94)。脑膜瘤的平均相对血流量为(14.47±5.96)ml/100g:梯度回波序列法为(14.85±6.72)ml/100g,EPI序列法为(13.72±4.54)ml/100g;梯度回波序列法与EPI序列法的结果比较差异无统计学意义(t=0.42,P=0.68)。结论应用脑灰质血流量数值法可便捷地定量检测脑膜瘤的相对血流量,脑膜瘤的相对血流量明显增高而且非均匀性;血脑屏障破坏情况下,仍可估算相对血流量值;尽管EPI序列法更具有效应,梯度回波序列法和EPI序列法均能有效地应用于相对血流量的测定。

关键词：定量检测平面回波脑膜瘤梯度回波序列 EPI序列钆喷替酸葡甲胺灰质血流量 1.5TMr visual system 血脑屏障破坏 T1WI 程控注射器方法应用 T2WI 定量计算结果比较非均匀性西门子敏感动态 PI法脑灰质统计学数值法

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用气相色谱测量润滑油和蜡中的残余溶剂

润滑油 1986年第2期 66-68页

作者： I. M. r. De Andrade bruening 曾新民

炼油工业上一般采用甲乙酮和甲苯作为润滑油脱蜡溶剂。为了监测酮苯脱蜡装置溶剂回收系统的溶剂是否回收完全,需要测量脱蜡油和蜡内所含的微量溶剂是否合符规格要求。于五十年代末,推荐采用气液色谱法。它涉及到试样的预处理(加热、汽... 详细信息

炼油工业上一般采用甲乙酮和甲苯作为润滑油脱蜡溶剂。为了监测酮苯脱蜡装置溶剂回收系统的溶剂是否回收完全,需要测量脱蜡油和蜡内所含的微量溶剂是否合符规格要求。于五十年代末,推荐采用气液色谱法。它涉及到试样的预处理(加热、汽提和收集等步骤);另外,甲苯洗脱峰的保留时间,约需20

关键词：润滑油样甲乙酮甲苯馏份叔丁基苯轻质丁酮芳基甲烷气液色谱气相色谱中性油石油馏分溶剂残余