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| 1 | The Neurotrophic Factor Artemin Promotes Pancreatic Cancer Invasion显示文摘 | Güralp O. Ceyhan Nathalia A. Giese Mert Erkan Annika G. Kerscher Moritz N. Wente Thomas Giese Markus W. Büchler Helmut Friess | 2006 | Annals of Surgery2006，，2： | 3 |
| 2 | Nerve Growth Factor and Artemin Are Paracrine Mediators of Pancreatic Neuropathy in Pancreatic Adenocarcinoma显示文摘 | Güralp O. Ceyhan Karl-Herbert Sch?fer Annika G. Kerscher Ulrich Rauch Ihsan Ekin Demir Mustafa Kadihasanoglu Carolin B?hm Michael W. Müller Markus W. Büchler Nathalia A. Giese Mert Erkan Helmut Friess | 2010 | Annals of Surgery2010，，5： | 2 |
| 3 | Advanced magnetic resonance imaging findings in salivary gland tumors显示文摘Salivary gland tumors(SGTs)make up a small portion(approximately 5%)of all head and neck tumors.Most of them are located in the parotid glands,while they are less frequently located in the submandibular glands,minor salivary glands or sublingual gland.The incidence of malignant or benign tumors(BTs)in the salivary glands varies according to the salivary gland from which they originate.While most of those detected in the parotid gland tend to be benign,the incidence of malignancy increases in other glands.The use of magnetic resonance imaging(MRI)in the diagnosis of SGTs is increasing every day.While conventional sequences provide sufficient data on the presence,localization,extent and number of the tumor,they are insufficient for tumor specification.With the widespread use of advanced techniques such as diffusion-weighted imaging,semiquantitative and quantitative perfusion MRI,studies and data have been published on the differentiation of malignant or BTs and the specificity of their subtypes.With diffusion MRI,differentiation can be made by utilizing the cellularity and microstructural properties of tumors.For example,SGTs such as high cellular Warthin’s tumor(WT)or lymphoma on diffusion MRI have been reported to have significantly lower apparent diffusion values than other tumors.Contrast agent uptake and wash-out levels of tumors can be detected with semiquantitative perfusion MRI.For example,it is reported that almost all of the pleomorphic adenomas show an increasing enhancement time intensity curve and do not wash-out.On quantitative perfusion MRI studies using perfusion parameters such as Ktrans,Kep,and Ve,it is reported that WTs can show higher Kep and lower Ve values than other tumors.In this study,the contribution of advanced MRI to the diagnosis and differential diagnosis of SGTs will be reviewed. | Erkan Gökçe Murat Beyhan | 2022 | World Journal of Radiology2022，14，8： | 2 |
| 4 | Magnetic resonance imaging findings of redundant nerve roots of the cauda equina显示文摘BACKGROUND Redundant nerve roots(RNRs)of the cauda equina are often a natural evolutionary part of lumbar spinal canal stenosis secondary to degenerative processes characterized by elongated,enlarged,and tortuous nerve roots in the superior and/or inferior of the stenotic segment.Although magnetic resonance imaging(MRI)findings have been defined more frequently in recent years,this condition has been relatively under-recognized in radiological practice.In this study,lumbar MRI findings of RNRs of the cauda equina were evaluated in spinal stenosis patients.AIM To evaluate RNRs of the cauda equina in spinal stenosis patients.METHODS One-hundred and thirty-one patients who underwent lumbar MRI and were found to have spinal stenosis between March 2010 and February 2019 were included in the study.On axial T2-weighted images(T2WI),the cross-sectional area(CSA)of the dural sac was measured at L2-3,L3-4,L4-5,and L5-S1 levels in the axial plane.CSA levels below 100 mm^2 were considered stenosis.Elongation,expansion,and tortuosity in cauda equina fibers in the superior and/or inferior of the stenotic segment were evaluated as RNRs.The patients were divided into two groups:Those with RNRs and those without RNRs.The CSA cut-off value resulting in RNRs of cauda equina was calculated.Relative length(RL)of RNRs was calculated by dividing the length of RNRs at mid-sagittal T2WI by the height of the vertebral body superior to the stenosis level.The associations of CSA leading to RNRs with RL,disc herniation type,and spondylolisthesis were evaluated.RESULTS Fifty-five patients(42%)with spinal stenosis had RNRs of the cauda equina.The average CSA was 40.99±12.76 mm^2 in patients with RNRs of the cauda equina and 66.83±19.32 mm^2 in patients without RNRs.A significant difference was found between the two groups for CSA values(P<0.001).Using a cut-off value of 55.22 mm^2 for RNRs of the cauda equina,sensitivity,specificity,positive predictive value(PPV),and negative predictive value(NPV)values of 96.4%,96.1%,89.4%,and 98.7%were obtained,respectively.RL was 3.39±1.31(range:0.93-6.01).When the extension of RNRs into the superior and/or inferior of the spinal canal stenosis level was evaluated,it was superior in 54.5%,both superior and inferior in 32.8%,and inferior in 12.7%.At stenosis levels leading to RNRs of the cauda equina,29 disc herniations with soft margins and 26 with sharp margins were detected.Disc herniation type and spondylolisthesis had no significant relationship with RL or CSA of the dural sac with stenotic levels(P>0.05).As the CSA of the dural sac decreased,the incidence of RNRs observed at the superior of the stenosis level increased(P<0.001).CONCLUSION RNRs of the cauda equina are frequently observed in patients with spinal stenosis.When the CSA of the dural sac is<55 mm^2,lumbar MRIs should be carefully examined for this condition. | Erkan Gökçe Murat Beyhan | 2021 | World Journal of Radiology2021，13，1： | 2 |
| 5 | The effects of centrally injected arachidonic acid on respiratory system: Involvement of cyclooxygenase to thromboxane signaling pathway显示文摘 | Erkan LG Guvenc G Altinbas B | 2016 | Respir Physiol Neurobiol2016，225，： | 1 |
| 6 | LexRank: Graph-based lexical centrality as salience in text summarization显示文摘 | Erkan G Radev D R | 2004 | Journal of Artificial Intelli- gence Research2004，，22： | 1 |
| 7 | Stella TUM: current consensus and discussion on pancreatic stellate cell research显示文摘 | ERKAN M ADLER G APTE MV | 2012 | Gut2012，61，2： | 1 |
| 8 | LexRank: graph based lexi cal centrality as salience in text summarization 显示文摘 | ERKAN G RADEV D R | 2004 | Journal of Artificial Intelligence Research2004，，： | 1 |
| 9 | Grape cane waste as a source of trans-resveratrol and trans-viniferin: High- value phytochemicals with medicinal and anti-phytopathogenic applications显示文摘 | Sierra Rayne Erkan Karacabey G Mazzaa | 2008 | Industrial Crops and Products2008，27，： | 1 |
| 10 | Physical,chemical and sensory analyses of freshly harvested sardines(sardina pilchardus) stored at 4C显示文摘 | G@odlu N 6zden Erkan N | 1998 | Journal of Aquatic Food Product Technology1998，7，2： | 1 |
| 11 | LexRank: Graph-based Lexical Centrality as Salience in Text Summarization显示文摘 | Erkan G Radev D | 2004 | Jour- nal of Artificial Intelligence Research2004，，22： | 1 |
| 12 | Primary orbital endodermalsinus tumor(yolk sac tumor)显示文摘 | KiratliH Erkan Balci K Guler G | 2008 | J AAPOS2008，12，6： | 1 |
| 13 | Effect of high pressure (HP) on the quality and shelf life of red mullet (Mullus surmelutus)显示文摘 | Erkan N üretener G Alpas H | 2010 | Innovative Food Science and Emerging Technologies2010，11，2： | 1 |
| 14 | The incidence and location of corona mortis:a study on 75 cadavers显示文摘 | Okcu G Erkan S Yercan HS | 2004 | Acts Orthop Soand2004，75，1： | 1 |
| 15 | StellaTUM: current consensus and dis- cussion on pancreatic stellate cell re- search 显示文摘 | Erkan M Adler G Apte MV | 2012 | Gut2012，61，2： | 1 |
| 16 | Efficacy and safety ofSaccharomyces boulardii in the 14-day triple anti-Helicobacter pyloritherapy:a prospective randomized placebo-controlled double-blindstudy显示文摘 | CINDORUK M ERKAN G KARAKAN T | 2007 | Helicobacter2007，12，4： | 1 |
| 17 | Supply chain performance meas- urement:a literature review显示文摘 | AKYUZ G A ERKAN T E | 2010 | International Journal of Pro- duction Research2010，48，17： | 1 |
| 18 | LexRank: Graph based lexical centrality as salience in text summarization 显示文摘 | Erkan G Radev R D | 2004 | Journal of Artificial Intelligence Research2004，22，1： | 1 |
| 19 | Primary orbital endodermal sinus tumor(yolk sac tumor)显示文摘 | Kiratli H Erkan Balci K Giiler G | 2008 | J AAPOS2008，12，6： | 1 |
| 20 | Grape cane waste as a source of tra_rs-resveratrol and transviniferin: High-value phytochemieals with medicinal and anti-phytopathogenic applications 显示文摘 | Sierra Rayne Erkan Karacabey Mazza G | 2008 | Industrial Crops and Products2008，27，3： | 1 |
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