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14篇 您的检索式:作者名="Vibhor"
    题名 作者 年代 出处 被引量
1Incremental value of magnetic resonance neurography of Lumbosacral plexus over non-contributory lumbar spine magnetic resonance imaging in radiculopathy: A prospective study显示文摘AIM: To test the incremental value of 3T magnetic resonance neurography(MRN) in a series of unilateral radiculopathy patients with non-contributory magnetic resonance imaging(MRI).METHODS: Ten subjects(3 men,7 women; mean age54 year and range 22-74 year) with unilateral lumbar radiculopathy and with previous non-contributory lumbar spine MRI underwent lumbosacral(LS) plexus MRN over a period of one year. Lumbar spine MRI performed as part of the MRN LS protocol as well as bilateral L4-S1 nerves,sciatic,femoral and lateral femoral cutaneous nerves were evaluated in each subject for neuropathy findings on both anatomic(nerve signal,course and caliber alterations) and diffusion tensor imaging(DTI)tensor maps(nerve signal and caliber alterations).Minimum fractional anisotropy(FA) and mean apparent diffusion coeffcient(ADC) of L4-S2 nerve roots,sciatic and femoral nerves were recorded.RESULTS: All anatomic studies and 80% of DTI imaging received a good-excellent imaging quality grading. In a blinded evaluation,all 10 examinations demonstrated neural and/or neuromuscular abnormality corresponding to the site of radiculopathy. A number of contributory neuropathy findings including double crush syndrome were observed. On DTI tensor maps,nerve signal and caliber alterations were more conspicuous. Although individual differences were observed among neuropathic appearing nerve(lower FA and increased ADC) as compared to its contralateral counterpart,there were no significant mean differences on statistical comparison of LS plexus nerves,femoral and sciatic nerves(P > 0.05).CONCLUSION: MRN of LS plexus is useful modality for the evaluation of patients with non-contributory MRI of lumbar spine as it can incrementally delineate the etiology and provide direct objective and non-invasive evidence of neuromuscular pathology.Avneesh Chhabra Sahar J Farahani Gaurav K Thawait Vibhor Wadhwa Allan J Belzberg John A Carrino 2016World Journal of Radiology2016,8,1:4
23T magnetic resonance neurography of pudendal nerve with cadaveric dissection correlation显示文摘AIM: To evaluate the pudendal nerve segments that could be identified on magnetic resonance neurography(MRN) before and after surgical marking of different nerve segments.METHODS: The hypothesis for this study was that pudendal nerve and its branches would be more easily seen after the surgical nerve marking. Institutional board approval was obtained. One male and one female cadaver pelvis were obtained from the anatomy board and were scanned using 3 Tesla MRI scanner using MR neurography sequences. All possible pudendal nerve branches were identified. The cadavers were then sent to the autopsy lab and were surgically dissected by a peripheral nerve surgeon and an anatomist to identify the pudendal nerve branches. Radiological markers were placed along the course of the pudendal nerve and its branches. The cadavers were then closed and rescanned using the same MRN protocol as the premarking scan. The remaining pudendal nerve branches were attempted to be identified using the radiological markers. All scans were read by an experienced musculoskeletal radiologist.RESULTS: The pre-marking MR Neurography scans clearly showed the pudendal nerve at its exit from the lumbosacral plexus in the sciatic notch, at the level of the ischial spine and in the Alcock's Canal in both cadavers. Additionally, the right hemorrhoidal branch could be identified in the male pelvis cadaver. The perineal and distal genital branches could not be identified. On post-marking scans, the markers were used as identifiable structures. The location of the perineal branch, the hemorroidal branch and the dorsal nerve to penis(in male cadaver)/clitoris(in female cadaver) could be seen. However, the visualization of these branches was suboptimal. The contralateral corresponding nerves were poorly seen despite marking on the surgical side. The nerve was best seen on axial T1W and T2W SPAIR images. The proximal segment could be seen well on 3D DW PSIF sequence. T2W SPACE was not very useful in visualization of this small nerve or its branches.CONCLUSION: Proximal pudendal nerve is easily seen on MR neurography, however it is not possible to identify distal branches of the pudendal nerve even after surgical marking.Avneesh Chhabra Courtney A McKenna Vibhor Wadhwa Gaurav K Thawait John A Carrino Gary P Lees A Lee Dellon 2016World Journal of Radiology2016,8,7:3
3Fatigue crack growth mechanism in aged 9Cr-1Mo steel: threshold and Paris regimes显示文摘Vibhor Chaswal Sasikala G Ray S K 2005Materials Science and Engineering2005,395,12:1
4The effects of scale: variation in the APOA1/C3/A4/A5 gene cluster显示文摘Stephanie M. Fullerton Anne V. Buchanan Vibhor A. Sonpar Scott L. Taylor Joshua D. Smith Christopher S. Carlson Veikko Salomaa Jari H. Steng?rd Eric Boerwinkle Andrew G. Clark Deborah A. Nickerson Kenneth M. Weiss 2004Human Genetics2004,,1:1
5Robust filtering and particle in micrograph images towards 3D reconstruction of purified proteins with cryo-electron microscopy显示文摘Vibhor Kumar Jukka Heikkonen Peter Engelhardt Kimmo Kaski 2003Journal of Structural Biology2003,,:1
6Model Predictive Control of Transitional Maneuvers for Adaptive Cruise Control Vehicles显示文摘VIBHOR L WILLIAM B GARRARD L etal 2004IEEE Transactions on Vehicular Technology2004,53,5:1
7Femoroacetabular impingement with chronic acetabular rim fracture- 3D computed tomography, 3D magnetic resonance imaging and arthroscopic correlation显示文摘Femoroacetabular impingement is uncommonly associated with a large rim fragment of bone along the superolateral acetabulum. We report an unusual case of femoroacetabular impingement(FAI) with chronic acetabular rim fracture. Radiographic, 3D computed tomography, 3D magnetic resonance imaging and arthroscopy correlation is presented with discussion of relative advantages and disadvantages of various modalities in the context of FAI.Avneesh Chhabra Shaun Nordeck Vibhor Wadhwa Sai Madhavapeddi William J Robertson 2015World Journal of Orthopedics2015,6,6:1
8Robust filtering and particle picking in micrography images towards 3D reconstruction of purified proteins with cryo-electron microcopy 显示文摘 Jukka Heikkonen Peter Engelhardt 2004Journal of Structural Biolo-gy2004,145,:1
9Model pre- dictive control of transitional maneuvers for adaptive cruise control vehicles显示文摘Vibhor L William B Garrard L 2004IEEE Transactions on Vehicular Technology2004,53,5:1
10Metastatic disease to the liver:Locoregional therapy strategies and outcomes显示文摘Secondary cancers of the liver are more than twenty times more common than primary tumors and are incurable in most cases.While surgical resection and systemic chemotherapy are often the first-line therapy for metastatic liver disease,a majority of patients present with bilobar disease not amenable to curative local resection.Furthermore,by the time metastasis to the liver has developed,many tumors demonstrate a degree of resistance to systemic chemotherapy.Fortunately,catheter-directed and percutaneous locoregional approaches have evolved as major treatment modalities for unresectable metastatic disease.These novel techniques can be used for diverse applications ranging from curative intent for small localized tumors,downstaging of large tumors for resection,or locoregional control and palliation of advanced disease.Their use has been associated with increased tumor response,increased disease-free and overall survival,and decreased morbidity and mortality in a broad range of metastatic disease.This review explores recent advances in liver-directed therapies for metastatic liver disease from primary colorectal,neuroendocrine,breast,and lung cancer,as well as uveal melanoma,cholangiocarcinoma,and sarcoma.Therapies discussed include bland transarterial embolization,chemoembolization,radioembolization,and ablative therapies,with a focus on current treatment approaches,outcomes of locoregional therapy,and future directions in each type of metastatic disease.Kylie E Zane Jordan M Cloyd Khalid S Mumtaz Vibhor Wadhwa Mina S Makary 2021World Journal of Clinical Oncology2021,12,9:0
11罐区计量自动化系统开始采用无线技术显示文摘对于任何石油化工下游运营公司来说,储存罐区部是关键一环,但在过去,它们常被视为非战略部分且不被重视。然而,一些引人注目的事故,到2005年发生在英国邦斯菲尔德的油库火灾爆炸和最近一次在2012委内瑞拉的艾姆威精炼厂事件,外加近期低迷的全球经济局势,这些都已经让很多家公司对这些设施重新产生兴趣,探索改善运营的方法。Vibhor Tandon Soroush Amidi 2013自动化博览2013,30,8:0
12COVID-19 imaging:Diagnostic approaches,challenges,and evolving advances显示文摘The role of radiology and the radiologist have evolved throughout the coronavirus disease-2019(COVID-19)pandemic.Early on,chest computed tomography was used for screening and diagnosis of COVID-19;however,it is now indicated for high-risk patients,those with severe disease,or in areas where polymerase chain reaction testing is sparsely available.Chest radiography is now utilized mainly for monitoring disease progression in hospitalized patients showing signs of worsening clinical status.Additionally,many challenges at the operational level have been overcome within the field of radiology throughout the COVID-19 pandemic.The use of teleradiology and virtual care clinics greatly enhanced our ability to socially distance and both are likely to remain important mediums for diagnostic imaging delivery and patient care.Opportunities to better utilize of imaging for detection of extrapulmonary manifestations and complications of COVID-19 disease will continue to arise as a more detailed understanding of the pathophysiology of the virus continues to be uncovered and identification of predisposing risk factors for complication development continue to be better understood.Furthermore,unidentified advancements in areas such as standardized imaging reporting,point-of-care ultrasound,and artificial intelligence offer exciting discovery pathways that will inevitably lead to improved care for patients with COVID-19.Dante L Pezzutti Vibhor Wadhwa Mina S Makary 2021World Journal of Radiology2021,13,6:0
13基于知识工程的设计自动化工程步骤的非规范化和规范化建模(英文)显示文摘目的:目前基于知识工程的设计过程自动化领域有一个缺陷,即缺乏一个语法、语义、公理完善的过程模型表示技术以便在不同平台之间共享,从而实现互操作。研究期望通过两个关键步骤来实现设计过程自动化。方法:1.对非规范化建模方法进行分析对比(表1);2.分析过程建模技术应该满足的功能,细化成不同的要点对不规范的建模方法进行分析对比,同时分析可以表示不同设计分解特征的规范建模技术。结论:1.明确了设计过程自动化的两个关键步骤:(1)非规范化地获取设计过程中的关键点,(2)将非规范化模型映射为规范化表示;2.分析得出表示不同设计分解特征的规范化表示方法和技术(表2);3.根据分析结果,可以选择最优的非规范化和规范化建模方法,从而支持设计过程自动化。Vibhor TREHAN Craig CHAPMAN Pathmeswaran RAJU 2015Journal of Zhejiang University-Science A(Applied Physics & Engineering)2015,16,9:0
14Tuning thermal release kinetics of soy oil from organic nanoparticles using variable synthesis conditions显示文摘Pieter Samyn Dieter Van Nieuwkerke Vibhore Rastogi Dirk Stanssens 2016Particuology2016,14,3:0
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