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515篇 您的检索式:作者名="Kallmes"
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1附加射频的流敏交替反转回波序列无损伤地测定兔VX2肿瘤的血流灌注显示文摘目的应用一新的动脉标记技术,探讨其描述VX2肿瘤高低血流灌注区特征的可行性。方法将VX2肿瘤接种于17只新西兰白兔双侧大腿肌肉内,采用附加射频的流敏交替反转回波技术,在自旋回波图上预估肿瘤的活性,通过减影法获取血流灌注图像,对肿瘤存活区、肿瘤坏死区和肌肉区作感兴趣区(ROI)分析,应用t检验分析感兴趣区资料。结果自旋回波图像在17只免34条大腿中显示了30个肿瘤区,成功地获取了所有的血流灌注图像。肌肉区的信号强度平均值是50±08,肿瘤存活区的信号强度平均值是117±39(左侧)和110±31(右侧),肌肉与两侧肿瘤存活区的差异有统计学意义(P<0001),表明肿瘤存活区为高灌注区域,但两侧肿瘤存活区的差异无统计学意义(P=059)。肿瘤坏死区的信号强度平均值明显低于肌肉区(P<0001)。结论附加射频的流敏交替反转回波序列是一简便的描述肿瘤血流灌注特征的技术,便于观察肿瘤富血管区,从而有利于肿瘤术前栓塞等计划的制定。吴仁华 Vu Mai 陈小轲 Armisted Williams David Kallmes 2005中华放射学杂志2005,39,3:5
2Mechanisms of fibrinolysis resistance and potential targets for thrombolysis in acute ischaemic stroke: lessons from retrieved stroke emboli显示文摘There has been growing interest and insight into the histological composition of retrieved stroke emboli.One of the main focuses of the stroke clot analysis literature has been the implications of clot composition on mechanical thrombectomy procedures.However,the holy grail of clot analysis may not be in the field of clot-device interaction,but rather,in understanding mechanisms of fibrinolysis resistance.The mechanisms underlying the low response to fibrinolytic therapy,even with the newer,more powerful agents,remain poorly understood.While factors such as embolus size,location and collateral status influence alteplase delivery and recanalisation rates;compositional analyses focused on histological and ultrastructural characteristics offer unique insights into mechanisms of alteplase resistance.In this review,we strive to provide comprehensive review of current knowledge on clot composition and ultrastructural analyses that help explain resistance to fibrinolysis.Waleed Brinjikji Oana Madalina Mereuta Daying Dai David F Kallmes Luis Savastano Yang Liu Shahid M Nimjee Raul G Nogueira Mehdi Abbasi Ramanathan Kadirvel 2021Stroke & Vascular Neurology2021,6,4:2
3Dural arteriovenous fistula:a pitfall of time-of-flight MR venography for the diagnosis of sinusthrombosis显示文摘Kallmes DF Cloft H J Jensen ME 1998Neuroradiology1998,40,:1
4Elastase-induced Saccular aneurysms in rabbits: a dose-escalation study 显示文摘 Fujiwara NH Berr SS 2002Am J Neuroradiol2002,23,2:1
5A randomized trial of vertebreplasty for osteoporetie spinal fractures 显示文摘Kallmes DF Comstock BA Heagerty PJ 2009N Engl J Med2009,361,:1
6A randomized trial of ver- tebroplasty for osteoporotie spinal fractures显示文摘Kallmes DF Comstock BA Heagerty P J 2009N Engl J Med2009,361,6:1
7A randomizod trial of vertobroplasty for osteoporotic spinal fractures 显示文摘Kallmes DF Comstoek BA Heagerty PJ 2009N Engl I Med2009,6,:1
8Subarachnoid hemorrhage, neurointensive care and aneurysm repair 显示文摘Wijdicks EF Kallmes DF Manno EM 2005Mayo Clin Proc2005,80,:1
9International retrospective study of the pipeline embolization device : a multicenter aneurysm treatment study 显示文摘Kallmes DF Hanel R Lopes D 2015AJNR Am J Neuroradiol2015,36,:1
10A technique to circumvent sub-cutaneous cement tracts during percutaneous vertebroplasty 显示文摘Kaufnann TJ Waid JT Kallmes DF 2004AmJ Neuroradiol2004,25,9:1
11Can aspect ratio be used to categorize intra-aneurysmal hemodynamics? a study of elastase induced aneurysms in rabbit 显示文摘Zeng Z Durka M J Kallmes DF 2011J Biomech2011,44,:1
12Percutaneous vertebroplasty 显示文摘Kallmes D F Jensen M E 2013Radiology2013,229,1:1
13The effects of cement volume on clinical outcomes of percutaneous vertebroplas-ty显示文摘Kaufmann TJ Trout AT Kallmes DF 2006AJNR Am J Neuroradiol2006,27,9:1
14The structure of paper I,the statistical geometry of an ideal two dimensional fiber network显示文摘Kallmes O Corte H 1960Tappi Journal1960,43,9:1
15New Expandable Hydrogel-Platinum coil hybrid device for aneurysm embolization显示文摘 Kallmes Naomi H 2002Am J Neuroradiol2002,23,:1
16New expandable hydrogel - platinum coil hybrid device for aneurysm embolization 显示文摘Kallmes DF Fujiwara NH 2002AJNR Am J Neuroradiol2002,23,9:1
17A randomized trial of vertebroplasty for osteoporotic spinal fractures显示文摘Kallmes D F Comstock B A Heagerty P J 2009N Engl J Med2009,361,6:1
18Subsequent verte- bral fracture after vertebroplasty: association with in- trosseous clefts 显示文摘Trout AT Kallmes DF Lane JI 2006Am J Neuroradiol2006,27,7:1
19The normal anterior commissure of the glottis 显示文摘KALLMES D F PHILLIPS C D 1997AJR Am J Roentgenol1997,168,5:1
20Aneurysm packing with hydrocoil embolic system versus platinum coil:initial clinical experience显示文摘 David F Kallmes 2004Am J Neuroradiol2004,25,1:1
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