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1Successful aspiration and ethanol sclerosis of a large,symptomatic, simple liver cyst:Case presentation and review of the literature显示文摘简单的肝包囊与 2.5%-4.25% 的流行是先天的。成像,是否由美国, CT 或 MRI,在把简单包囊与另外的病原学区分开来是精确的,包括寄生,肿瘤,管相关,并且创伤性囊肿。征兆的简单的肝包囊是稀罕的,并且症状的真频率不被知道。征兆的简单的肝包囊主要大(> 4 厘米) ,在女人右边、更普通、更老的病人。绝大多数简单肝的包囊不要求治疗或后续,尽管大包囊(> 4 厘米) 可以开始与连续成像被跟随保证稳定性。到大简单包囊的症状的归属应该小心地被承担,在选择诊断以后被排除了。渴望可以被执行测试症状是否由于包囊;然而,包囊复发应该被期望。有 laparoscopic deroofing 和渴望的有限经验,由一个致硬化的代理人的灌输列在后面为征兆的包囊的治疗表明了有希望的结果。这里,我们与大、征兆的、简单的肝包囊描述一个病人经历了症状的完全的分辨率后面的包囊排水和白酒脱离,和我们在场文学的全面评论。Wojciech C Blonski Mical S Campbell Thomas Faust David C Metz 2006World Journal of Gastroenterology2006,12,18:50
2Pyogenic liver abscess:An audit of 10 years’experience显示文摘AIM:To describe our own experience with pyogenic liver abscesses over the past 10 years and investigate the risk factors associated with failure of initial percutaneous therapy.METHODS:A retrospective study of records of 63 PLA patients presenting between 1998 and 2008 to Australian tertiary referral centre,were reviewed.Amoebic and hydatid abscesses were excluded.Demographic,clinical,radiological,and microbiological characteristics,as well as surgical/radiological interventions,were recorded.RESULTS:Sixty-three patients(42 males,21 females) aged 65(±14) years[mean±(SD) ]had prodromal symptoms for a median(interquartile range;IQR) of 7(5-14) d.Only 59%of patients were febrile at presentation;however,the serum C-reactive protein was elevated in all 47 in whom it was measured.Liver function tests were non-specifically abnormal.67%of patients had a solitary abscess,while 32%had>3 abscesses with a median(IQR) diameter of 6.3(4-9) cm.Causative organisms were:Streptococcus milleri 25%,Klebsiella pneumoniae 21%,and Escherichia coli 16%.A presumptive cryptogenic cause was most common (34%).Four patients died in this series:one from sepsis,two from advanced cancer,and one from acute myocardial infarction.The initial procedure was radiological aspiration±drainage in 54 and surgery in two patients.17%underwent surgical management during their hospitalization.Serum hypoalbuminaemia[mean (95%CI) :32(29-35) g/L vs 28(25-31) g/L,P=0.045] on presentation was found to be the only factor related to failure of initial percutaneous therapy on univariate analysis.CONCLUSION:PLA is a diagnostic challenge,because the presentation of this condition is non-specific.Intravenous antibiotics and radiological drainage in the first instance allows resolution of most PLAs;However,a small proportion of patients still require surgical drainage.Tony CY Pang Thomas Fung Jaswinder Samra Thomas J Hugh Ross C Smith 2011World Journal of Gastroenterology2011,17,12:46
3Cetuximab plus FOLFOX6 or FOLFIRI in metastatic colorectal cancer: CECOG trial显示文摘AIM: To investigate efficacy and safety of cetuximab combined with two chemotherapy regimens in patients with unresectable metastatic colorectal cancer (mCRC). METHODS: Randomized patients received cetuximab with 5-fluorouracil (5-FU), folinic acid (FA) and oxaliplatin (FOLFOX) 6 (arm A, n = 74) or 5-FU, FA and irinotecan (FOLFIRI) (arm B, n = 77). KRAS mutation status was determined retrospectively in a subset of tumors (n = 117). RESULTS: No significant difference was found between treatment arms A and B in the progression-free survival (PFS) rate at 9 mo, 45% vs 34%; median PFS, 8.6 mo vs 8.3 mo [hazard ratio (HR) = 1.06]; overall response rate (ORR) 43% vs 45% [odds ratio (OR) = 0.93] and median overall survival (OS), 17.4 mo vs 18.9 mo (HR = 0.98). Patients with KRAS wild-type tumors demonstrated improved PFS (HR = 0.55, P = 0.0051), OS, (HR = 0.62, P = 0.0296) and ORR (53% vs 36%) and in arm A, improved PFS (HR = 0.49, P = 0.0196), OS (HR = 0.48, P = 0.0201) and ORR (56%vs 30%), compared with patients with KRAS mutated tumors. In arm B no significant differences were found in efficacy by KRAS mutation status. Treatment in arms A and B was generally well tolerated. CONCLUSION: This study confirms that combinations of cetuximab with FOLFOX6 or FOLFIRI are effective and significantly improve clinical outcome in KRAS wild-type compared with KRAS mutated mCRC.Janja Ocvirk Thomas Brodowicz Fritz Wrba Tudor E Ciuleanu Galina Kurteva Semir Beslija Ivan Koza Zsuzsanna Pápai Diethelm Messinger Ugur Yilmaz Zsolt Faluhelyi Suayib Yalcin Demetris Papamichael Miklós Wenczl Zrinka Mrsic-Krmpotic Einat Shacham-Shmueli Damir Vrbanec Regina Esser Werner Scheithauer Christoph C Zie-linski 2010World Journal of Gastroenterology2010,16,25:17
4冠状动脉内影像学临床应用专家共识(第一部分):对冠状动脉介入治疗的指导与优化显示文摘欧洲心血管介入协会(EAPCI)专家组系统总结了血管内超声(IVUS)和光学相干断层成像(OCT)这两种血管内影像学检查临床应用指征的现有证据,提供了关于IVUS和OCT指导经皮冠状动脉介入治疗(PCI)的应用价值,并明确了最可能从腔内影像学指导的介入治疗中获得临床收益的患者或病变类型,同时详细论述了PCI前如何使用IVUS或OCT优化支架尺寸(支架长度和直径)和手术策略的选择。此外,专家推荐对支架失败(支架内再狭窄或支架内血栓形成)的患者应常规进行冠状动脉内影像学检查,并首选OCT。最后,重点论述了IVUS和OCT在指导PCI和评估支架失败两个方面的优势和局限性,并对未来需要深入研究的领域进行了展望。Lorenz Raber Gary S Mintz Konstantinos C Koskinas Thomas W Johnson Niels R Holm Yoshinubo Onuma Maria D Radu Michael Joner Bo Yu Haibo Jia Nicolas Meneveau Jose M.de la Torre Hemandez Javier Escaned Jonathan Hill Francesco Prati Antonio Colombo Carlo di Mario Evelyn Regar Davide Capodanno William Wijns Robert A Byme Giulio Guagliumi 2019中华心血管病杂志2019,47,1:17
5Magnetic resonance elastography is accurate in detecting advanced fibrosis in autoimmune hepatitis显示文摘To assess the value of magnetic resonance elastography(MRE) in detecting advanced fibrosis/cirrhosis in autoimmune hepatitis(AIH).METHODS In this retrospective study, 36 patients(19 treated and 17 untreated) with histologically confirmed AIH and liver biopsy performed within 3 mo of MRE were identified at a tertiary care referral center. Liver stiffness(LS) with MRE was calculated by a radiologist, and inflammation grade and fibrosis stage in liver biopsy was assessed by a pathologist in a blinded fashion. Two radiologistsevaluated morphological features of cirrhosis on conventional magnetic resonance imaging(MRI). Accuracy of MRE was compared to laboratory markers and MRI for detection of advanced fibrosis/cirrhosis.RESULTS Liver fibrosis stages of 0, 1, 2, 3 and 4 were present in 4, 6, 7, 6 and 13 patients respectively. There were no significant differences in distribution of fibrosis stage and inflammation grade between treated and untreated patient groups. LS with MRE demonstrated stronger correlation with liver fibrosis stage in comparison to laboratory markers for chronic liver disease(r = 0.88 vs-0.48-0.70). A trend of decreased mean LS in treated patients compared to untreated patients was observed(3.7 k Pa vs 3.84 k Pa) but was not statistically significant. MRE had an accuracy/sensitivity/specificity/positive predictive value/negative predictive value of 0.97/90%/100%/100%/90% and 0.98/92.3%/96%/92.3%/96% for detection of advanced fibrosis and cirrhosis, respectively. The performance of MRE was significantly better than laboratory tests for detection of advanced fibrosis(0.97 vs 0.53-0.80, P < 0.01), and cirrhosis(0.98 vs 0.58-0.80, P < 0.01) and better than conventional MRI for diagnosis of cirrhosis(0.98 vs 0.78, P = 0.002).CONCLUSION MRE is a promising modality for detection of advanced fibrosis and cirrhosis in patients with AIH with superior diagnostic accuracy compared to laboratory assessment and MRI.Jin Wang Neera Malik Meng Yin Thomas C Smyrk Albert J Czaja Richard L Ehman Sudhakar K Venkatesh 2017World Journal of Gastroenterology2017,23,5:15
6Abdominal applications of diffusion-weighted magnetic resonance imaging: Where do we stand?显示文摘Diffusion-weighted imaging (DWI) is one of the magnetic resonance imaging (MRI) sequences providing qualitative as well as quantitative information at a cellular level. It has been widely used for various applications in the central nervous system. Over the past decade, various extracranial applications of DWI have been increasingly explored, as it may detect changes even before signal alterations or morphological abnormalities become apparent on other pulse sequences. Initial results from abdominal MRI applications are promising, particularly in oncological settings and for the detection of abscesses. The purpose of this article is to describe the clinically relevant basic concepts of DWI, techniques to perform abdominal DWI, its analysis and applications in abdominal visceral MR imaging, in addition to a brief overview of whole body DWI MRI.Ajaykumar C Morani Khaled M Elsayes Peter S Liu William J Weadock Janio Szklaruk Jonathan Russell Dillman Asra Khan Thomas L Chenevert Hero K Hussain 2013World Journal of Radiology2013,5,3:12
7Modern imaging techniques for preoperative detection of distant metastases in gastric cancer显示文摘A substantial portion of patients with newly diagnosed gastric cancer has distant metastases(M1 disease).These patients have a very poor prognosis and it is generally accepted that they should be treated with noncurative intent. Because it dramatically changes prognosis and treatment plans, it is very important to diagnose distant metastases. In this article, the definition, pathways, incidence and sites of distant metastases in gastric cancer are described.Subsequently, the current performance of imaging in detecting distant metastases in newly diagnosed gastric cancer is outlined and future prospects are discussed.Robert M Kwee Thomas C Kwee 2015World Journal of Gastroenterology2015,21,37:12
8No association between cyclooxygenase-2 and uridine diphosphate glucuronosyltransferase 1A6 genetic polymorphisms and colon cancer risk显示文摘AIM:To investigate the association of variations in the cyclooxygenase-2(COX2) and uridine diphosphate glucuronosyltransferase 1A6(UGT1A6) genes and non-steroidal anti-inflammatory drugs(NSAIDs) use with risk of colon cancer.METHODS:NSAIDs,which are known to reduce the risk of colon cancer,act directly on COX2 and reduce its activity.Epidemiological studies have associated variations in the COX2 gene with colon cancer risk,but others were unable to replicate this finding.Similarly,enzymes in the UGT1A6 gene have been demonstrated to modify the therapeutic effect of NSAIDs on colon adenomas.Polymorphisms in the UGT1A6 gene have been statistically shown to interact with NSAID intake to influence risk of developing colon adenomas,but not colon cancer.Here we examined the association of tagging single nucleotide polymorphisms(SNPs) in the COX2 and UGT1A6 genes,and their interaction with NSAID consumption,on risk of colon cancer in a population of 422 colon cancer cases and 481 population controls.RESULTS:No SNP in either gene was individually statistically significantly associated with colon cancer,nor did they statistically significantly change the protective effect of NSAID consumption in our sample.Like others,we were unable to replicate the association of variants in the COX2 gene with colon cancer risk(P > 0.05),and we did not observe that these variants modify the protective effect of NSAIDs(P > 0.05).We were able to confirm the lack of association of variants in UGT1A6 with colon cancer risk,although further studies will have to be conducted to confirm the association of these variants with colon adenomas.CONCLUSION:Our study does not support a role of COX2 and UGT1A6 genetic variations in the development of colon cancer.Cheryl L Thompson Sarah J Plummer Alona Merkulova Iona Cheng Thomas C Tucker Graham Casey Li Li 2009World Journal of Gastroenterology2009,15,18:11
9Capecitabine and irinotecan with and without bevacizumab for advanced colorectal cancer patients显示文摘AIM:To investigate the efficacy and safety of capecitabine plus irinotecan±bevacizumab in advanced or metastatic colorectal cancer patients. METHODS:Forty six patients with previously untreated,locally-advanced or metastatic colorectal cancer(mCRC) were recruited between 2001-2006 in a prospective open-label phaseⅡtrial,in German community-based outpatient clinics.Patients received a standard capecitabine plus irinotecan(CAPIRI) or CAPIRI plus bevacizumab(CAPIRI-BEV) regimen every 3 wk. Dose reductions were mandatory from the first cycle in cases of>grade 2 toxicity.The treatment choice of bevacizumab was at the discretion of the physician.Theprimary endpoints were response and toxicity and secondary endpoints included progression-free survival and overall survival. RESULTS:In the CAPIRI group vs the CAPRI-Bev group there were more female than male patients(47% vs 24%) ,and more patients had colon as the primary tumor site(58.8%vs 48.2%) with fewer patients having sigmoid colon as primary tumor site(5.9%vs 20.7%) .Grade 3/4 toxicity was higher with CAPIRI than CAPIRI-Bev:82%vs 58.6%.Partial response rates were 29.4%and 34.5%,and tumor control rates were 70.6%and 75.9%,respectively.No complete responses were observed.The median progression-free survival was 11.4 mo and 12.8 mo for CAPIRI and CAPIRI-Bev,respectively.The median overall survival for CAPIRI was 15 mo(458 d) and for CAPIRI-Bev 24 mo(733 d) .These differences were not statistically different.In the CAPIRI-Bev,group,two patients underwent a full secondary tumor resection after treatment,whereas in the CAPIRI group no cases underwent this procedure. CONCLUSION:Both regimens were well tolerated and offered effective tumor growth control in this outpatient setting.Severe gastrointestinal toxicities and thromboembolic events were rare and if observed were never fatal.Markus Moehler Martin F Sprinzl Murad Abdelfattah Carl C Schimanski Bernd Adami Werner Godderz Klaus Majer Dimitri Flieger Andreas Teufel Juergen Siebler Thomas Hoehler Peter R Galle Stephan Kanzler 2009World Journal of Gastroenterology2009,15,4:10
10Intentional ingestions of foreign objects among prisoners: A review显示文摘The intentional ingestion of foreign objects(IIFO) is described more commonly in prison populations than in the general population, with an estimated annual incidence of 1 in 1900 inmates in our state correctional facilities. Incidents often involve ingestion of small metal objects(e.g., paperclips, razor blades) or other commonly available items like pens or eating utensils. Despite ingestion of relatively sharp objects, most episodes can be clinically managed with either observation or endoscopy. Surgery should be reserved for those with signs or symptoms of gastrointestinal perforation or obstruction. For those with a history of IIFO, efforts should focus on prevention of recurrenceas subsequent episodes are associated with higher morbidity, significant healthcare and security costs. The pattern of IIFO is often repetitive, with escalation both in frequency of ingestions and in number of items ingested. Little is known about successful prevention strategies, but efforts to monitor patients and provide psychiatric care are potential best-practice strategies. This article aims to provide state-of-the art review on the topic, followed by a set of basic recommendations.David C Evans Thomas R Wojda Christian D Jones Andrew J Otey Stanislaw P Stawicki 2015World Journal of Gastrointestinal Endoscopy2015,7,3:10
11Current and future applications of in vitro magnetic resonance spectroscopy in hepatobiliary disease显示文摘原子磁性的回声光谱学允许细胞的生物化学和新陈代谢的学习,在整个身体在活体内并且在更高的磁场力量在试管内。因为这种技术非侵略、非选择,磁性的回声光谱学方法论广泛地在生物化学和药被使用了。房间,身体液体和纸巾的在试管内磁性的回声光谱学研究在医药生物化学被使用了调查 pathophysiological 过程,更最近,这种技术被医生使用了决定疾病畸形在活体内。这个加亮的话题说明在试管内的潜力在学习肝胆管系统的磁性的回声光谱学。在恶意、非恶意的肝疾病和胆汁作文的学习的磁性的回声光谱学学习的在试管内质子和磷的角色被讨论,特别地与关联词在活体内的参考整个身体的磁性的回声光谱学应用。在摘要,磁性的回声光谱学技术能在到内在的 pathophysiological 过程的疾病严厉和指针上提供非侵略的生物化学的信息。磁性的回声光谱学为疾病简历标记,以及估计的治疗学的反应作为一个屏蔽工具保持潜在的诺言。I Jane Cox Amar Sharif Jeremy FL Cobbold Howard C Thomas Simon D Taylor-Robinson 2006World Journal of Gastroenterology2006,12,30:10
12In vivo radiometric analysis of glucose uptake and distribution in mouse bone显示文摘Bone formation and remodeling occurs throughout life and requires the sustained activity of osteoblasts and osteoclasts,particularly during periods of rapid bone growth.Despite increasing evidence linking bone cell activity to global energy homeostasis,little is known about the relative energy requirements or substrate utilization of bone cells.In these studies,we measured the uptake and distribution of glucose in the skeleton in vivo using positron-emitting^(18)F-fluorodeoxyglucose([^(18)F]-FDG) and non-invasive,high-resolution positron emission tomography/computed tomography(PET/CT) imaging and ex vivo autoradiography.Assessment of [^(18)F]-FDG uptake demonstrated that relative to other tissues bone accumulated a significant fraction of the total dose of the glucose analog.Skeletal accumulation was greatest in young mice undergoing the rapid bone formation that characterizes early development.PET/CT imaging revealed that [^(18)F]-FDG uptake was greatest in the epiphyseal and metaphyseal regions of long bones,which accords with the increased osteoblast numbers and activity at this skeletal site.Insulin administration significantly increased skeletal accumulation of [^(18)F]-FDG,while uptake was reduced in mice lacking the insulin receptor specifically in osteoblasts or fed a high-fat diet.Our results indicated that the skeleton is a site of significant glucose uptake and that its consumption by bone cells is subject to regulation by insulin and disturbances in whole-body metabolism.Meredith L Zoch Diane S Abou Thomas L Clemens Daniel LJ Thorek Ryan C Riddle 2016Bone Research2016,4,1:9
13Dietary and metabolomic determinants of relapse in ulcerative colitis patients: A pilot prospective cohort study显示文摘AIM To identify demographic, clinical, metabolomic, and lifestyle related predictors of relapse in adult ulcerative colitis(UC) patients.METHODS In this prospective pilot study, UC patients in clinical remission were recruited and followed-up at 12 mo to assess a clinical relapse, or not. At baseline information on demographic and clinical parameters was collected. Serum and urine samples were collected for analysis of metabolomic assays using a combined direct infusion/liquid chromatography tandem mass spectrometry and nuclear magnetic resolution spectroscopy. Stool samples were also collected to measure fecal calprotectin(FCP). Dietary assessment was performed using a validated self-administered food frequency questionnaire. RESULTS Twenty patients were included(mean age: 42.7 ± 14.8 years, females: 55%). Seven patients(35%) experienced a clinical relapse during the follow-up period. While 6 patients(66.7%) with normal body weight developed a clinical relapse, 1 UC patient(9.1%) who was overweight/obese relapsed during the follow-up(P = 0.02). At baseline, poultry intake was significantly higher in patients who were still in remission during follow-up(0.9 oz vs 0.2 oz, P = 0.002). Five patients(71.4%) with FCP > 150 μg/g and 2 patients(15.4%) with normal FCP(≤ 150 μg/g) at baseline relapsed during the follow-up(P = 0.02). Interestingly, baseline urinary and serum metabolomic profiling of UC patients with or without clinical relapse within 12 mo showed a significant difference. The most important metabolites that were responsible for this discrimination were trans-aconitate, cystine and acetamide in urine, and 3-hydroxybutyrate, acetoacetate and acetone in serum. CONCLUSION A combination of baseline dietary intake, fecal calprotectin, and metabolomic factors are associated with risk of UC clinical relapse within 12 mo.Ammar Hassanzadeh Keshtel iFloris F van den Brand Karen L Madsen Rupasri Mandal Rosica ValchevaKaren I Kroeker Beomsoo Han Rhonda C Bell Janis Cole Thomas Hoevers David S Wishart Richard N Fedorak Levinus A Dieleman 2017World Journal of Gastroenterology2017,23,21:9
14Hepatocellular carcinoma,human immunodeficiency virus and viral hepatitis in the HAART era显示文摘The incidence of hepatocellular carcinoma(HCC)in patients with human immunodeficiency virus(HIV) is rising.HCC in HIV almost invariably occurs in the context of hepatitis C virus(HCV)or hepatitis B virus (HBV)co-infection and,on account of shared modes of transmission,this occurs in more than 33% and 10% of patients with HIV worldwide respectively.It has yet to be clearly established whether HIV directly accelerates HCC pathogenesis or whether the rising incidence is an epiphenomenon of the highly active antiretroviral therapy(HAART)era,wherein the increased longevity of patients with HIV allows long-term complications of viral hepatitis and cirrhosis to develop.Answering this question will have implications for HCC surveillance and the timing of HCV/HBV therapy,which in HIV co-infection presents unique challenges.Once HCC develops,there is growing evidence that HIV co-infection should not preclude conventional therapeutic strategies,including liver transplantation.Douglas C Macdonald Mark Nelson Mark Bower Thomas Powles 2008World Journal of Gastroenterology2008,14,11:9
15Role of interventional radiology in the management of acute gastrointestinal bleeding显示文摘Acute gastrointestinal bleeding(GIB) can lead to significant morbidity and mortality without appropriate treatment. There are numerous causes of acute GIB including but not limited to infection, vascular anomalies, inflammatory diseases, trauma, and malignancy. The diagnostic and therapeutic approach of GIB depends on its location, severity, and etiology. The role of interventional radiology becomes vital in patients whose GIB remains resistant to medical and endoscopic treatment. Radiology offers diagnostic imaging studies and endovascular therapeutic interventions that can be performed promptly and effectively with successful outcomes. Computed tomography angiography and nuclear scintigraphy can localize the source of bleeding and provide essential information for the interventional radiologist to guide therapeutic management with endovascular angiography and transcatheter embolization. This review article provides insight into the essential role of Interventional Radiology in the management of acute GIB.Raja S Ramaswamy Hyung Won Choi Hans C Mouser Kazim H Narsinh Kevin C McCammack Tharintorn Treesit Thomas B Kinney 2014World Journal of Radiology2014,6,4:8
16Vanishing bile duct syndrome in human immunodeficiency virus infected adults:A report of two cases显示文摘Vanishing bile duct syndrome(VBDS) is a group of rare disorders characterized by ductopenia,the progressive destruction and disappearance of intrahepatic bile ducts leading to cholestasis.Described in association with medications,autoimmune disorders,cancer,transplantation,and infections,the specific mechanisms of disease are not known.To date,only 4 cases of VBDS have been reported in human immunodeficiency virus(HIV) infected patients.We report 2 additional cases of HIV-associated VBDS and review the features common to the HIV-associated cases.Presentation includes hyperbilirubinemia,normal liver imaging,and negative viral and autoimmune hepatitis studies.In HIV-infected subjects,VBDS occurred at a range of CD4+ T-cell counts,in some cases following initiation or change in antiretroviral therapy.Lymphoma was associated with two cases;nevirapine,antibiotics,and viral co-infection were suggested as etiologies in the other cases.In HIV-positive patients with progressive cholestasis,early identification of VBDS and referral for transplantation may improve outcomes.Ana Paula Oppenheimer Christopher Koh Mary McLaughlin John C Williamson Thomas D Norton Jennifer Laudadio Theo Heller David E Kleiner Kevin P High Caryn G Morse 2013World Journal of Gastroenterology2013,19,1:8
17Pseudolymphoma (reactive lymphoid hyperplasia) of the liver:A clinical challenge显示文摘Reactive lymphoid hyperplasia(RLH), also known as pseudolymphoma or nodular lymphoid lesion of the liver is an extremely rare condition, and only 51 hepatic RLH cases have been described in the literature since the first case was described in 1981. The majority of these cases were asymptomatic and incidentally found through radiological imaging. The precise etiology of hepatic RLH is still unknown, but relative high prevalence of autoimmune disorder in these cases suggests an immune-based liver disorder. Imaging features of hepatic RLH often suggest malignant lesions such as hepatocellular carcinoma and cholangiocarcinoma. In this report, we discuss two cases of hepatic RLH in patients with autoimmune hepatitis. We also present pathologic and magnetic resonance imaging findings, including one case utilizing a hepatocellular contrast agent, Eovist. Definitive diagnosis of hepatic RLH often requires surgical excision.Yong Kyong Kwon Reena C Jha Kambiz Etesami Thomas M Fishbein Metin Ozdemirli Chirag S Desai 2015World Journal of Hepatology2015,7,26:8
18Current and future applications of magnetic resonance imaging and spectroscopy of the brain in hepatic encepha-lopathy显示文摘肝的脑病(他) 普通 neuro 精神病学的畸形,它从肝细胞失败或 portosystemic 与肝疾病和结果复杂化病人的功课正在推延。表明他是广泛地可变的并且从温和无临床症状的骚乱包含一个系列到深昏迷。研究兴趣集中于传播导出勇气的毒素的角色,特别地氨,胀大的大脑的开发和在导致全球 CNS 消沉和混乱功能的服的 neurotransmitter 系统的变化。直到最近,服的功能的直接调查有在人是困难的。然而,当磁性的回声光谱学( 1H 太太)检测的质子在大脑生物化学变化时,新磁性的回声成像( MRI )技术在大脑体积( coregistered MRI )和损害大脑功能( fMRI )提供对变化的评价的一个非侵略的工具,包括服的 osmolytes 的直接测量,例如 myoinositol ,充斥管理对细胞的动态平衡内在的过程的使挫折和夫酸安,包括细胞内部的水的累积。这些细胞内部的 osmolytes 的集中与 hyperammonaemia 改变。有 neuropsychiatric 缺陷并且自从先生系列的严厉的检测太太的代谢物畸形相互关联向正常术后疗法回来,技术可能具有在客观耐心的监视并且在估计各种各样的治疗政体的有效性的使用。VP Bob Graver M Alex Dresner Daniel M Forton Serena Counsell David J Larkman Nayna Patel Howard C Thomas Simon D Taylor-Robinson 2006World Journal of Gastroenterology2006,12,19:8
19Instability after total hip arthroplasty显示文摘Instability following total hip arthroplasty(THA) is an unfortunately frequent and serious problem that requires thorough evaluation and preoperative planning before surgical intervention. Prevention through optimal index surgery is of great importance, as the management of an unstable THA is challenging even for an experienced joints surgeon. However, even after well-planned surgery, a significant incidence of recurrent instability still exists. Non-operative management is often successful if the components are well-fixed and correctly positioned in the absence of neurocognitive disorders. If conservative management fails, surgical options include revision of malpositioned components; exchange of modular components such as the femoral head and acetabular liner; bipolar arthroplasty; tripolar arthroplasty; use of a larger femoral head; use of a constrained liner; soft tissue reinforcement and advancement of the greater trochanter.Brian C Werner Thomas E Brown 2012World Journal of Orthopedics2012,3,8:7
20基于频谱细化算法的电泳光散射Zeta电位测量方法显示文摘电泳光散射法测量Zeta电位时,散射光频移只有几百赫兹,在全频段求取散射光功率谱会降低频率分辨率。为此,提出先用傅里叶变换在全频段对散射光信号进行频谱估计,获取需要细化分析的频谱范围,然后用线性调频变换频谱细化算法在窄带范围内进行高分辨率的频谱细化分析,从而获得准确的散射光频移。设计了基于激光多普勒技术的散射光频移测量装置,使用该方法分别测量了3种标准聚苯乙烯乳胶微球的Zeta电位。实验结果表明,线性调频变换频谱细化算法可以有效地提高Zeta电位的测量精度,测量重复性小于5%。刘伟 张珊珊 John C Thomas 陈文钢 王雅静 申晋 2017光学学报2017,37,2:7
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