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| 1 | 腰部的脊骨的磁性的回声成像上的过渡 lumbosacral 解剖的预言显示文摘 AIM:To evaluate two simple angle measurements for predicting lumbosacral transitional vertebra(LSTV) in magnetic resonance imaging(MRI) studies of the spine.METHODS:The lumbar spine MRI studies of 50 subjects with LSTV and 50 subjects with normal lumbosacral anatomy were retrospectively evaluated.In each study,the mid-sagittal T2-weighted image was used to measure the angle formed by a line parallel to the superior surface of the sacrum and a line perpendicular to the axis of the scan table(A-angle),as well as the angle formed by a line parallel to the superior endplate of the L3 vertebra and a line parallel to the superior surface of the sacrum(B-angle).RESULTS:The total study population consisted of 100 subjects(46 males,54 females,51 ± 16 years old).There were no differences in age and sex between the two groups.Both A-angle and B-angle were significantly increased in subjects with LSTV compared to controls(P < 0.05).The optimal cut-off values of A-angle and B-angle for the prediction of LSTV were 39.8°(sensitivity = 80%,specificity = 80%,accuracy = 83%;95% confidence interval = 74%-89%,P = 0.0001) and 35.9°(sensitivity = 80%,specificity = 54%,accuracy = 69%;95% confidence interval = 59%-78%,P = 0.0005),respectively.CONCLUSION:On sagittal MR images of the lumbar spine,an increased A-angle and/or B-angle should alert the radiologist to the presence of LSTV. | Majid Chalian Theodoros Soldatos John A Carrino Alan J Belzberg Jay Khanna Avneesh Chhabra | 2012 | World Journal of Radiology2012，4，3： | 5 |
| 2 | Comparative Study of Antimicrobial Activity and Phytochemical Analysis of Methanolic and Aqueous Extracts of the Fruit of Emblica Officinalis against Pathogenic Bacteria显示文摘Objective:To investigate antimicrobial potential of aqueous(infusions,decoctions) and methanlic extracts(1:2 and 1:5 concentrations) of Emblica officinalis(amla) against seven pathogenic bacteria namely Staphylococcs aureus,Staphylococcus saprophyticus,Escherichia coli,Enterococcus faecalis,Enterococcus cloacae,Proteus vulgaris and Klebsiella pneumoniae.Methods:The well diffusion technique was employed.The minimum inhibitory concentration(MIC) was determined using micro-broth dilution methods and phytochemical screening was done as per standard procedures.Results:Aqueous infusion extract of amla exhibited potent antimicrobial activity against E.cloacae followed by E.coli.Preliminary phytochemical analysis of E.officinalis aqueous extracts(infusions and decoctions) only showed presence of tannins,saponins,flavanoids,Terpenoids and phenols.MIC of aqueous extract of E.officinalis was most active against K.pneumoniae.Whereas MIC of methanol extract of E.officinalis shows maximum activity against E.coli.Conclusion:Emblica officinalis definitely possesses potent antimicrobial activities and this can serve as an important platform for the development of inexpensive,safe and effective | Avneesh Kumar Bilal Ahmd Tantry Shiak Rahiman Upasna Gupta | 2011 | Journal of Traditional Chinese Medicine2011，31，3： | 4 |
| 3 | Incremental 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 | 2016 | World Journal of Radiology2016，8，1： | 4 |
| 4 | 3T 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 | 2016 | World Journal of Radiology2016，8，7： | 3 |
| 5 | Spectrum of magnetic resonance imaging findings in congenital lumbar spinal stenosis显示文摘AIM: To investigate whether congenital lumbar spinal stenosis(CLSS) is associated with a specific degenerative changes of the lumbar spine. METHODS: The lumbar spine magnetic resonance imaging studies of 52 subjects with CLSS and 48 control subjects were retrospectively evaluated. In each examination, the five lumbar levels were assessed for the presence or absence of circumferential or shallow annular bulges, annular tears, anterior or posterior disc herniations, epidural lipomatosis, Schmorl's nodes,spondylolisthesis, pars defects, and stress reactions of the posterior vertebral elements. RESULTS: Compared to control individuals, subjects with CLSS exhibited increased incidence of circumferential and shallow annular bulges, annular tears, discherniations and spondylolisthesis(P < 0.05). CONCLUSION: CLSS is associated with increased incidence of degenerative changes in specific osseous and soft-tissue elements of the lumbar spine. | Theodoros Soldatos Majid Chalian Shrey Thawait Alan J Belzberg John Eng John A Carrino Avneesh Chhabra | 2014 | World Journal of Clinical Cases2014，2，12： | 2 |
| 6 | Assessment of Median Nerve with MR Neurography by Using Diffusion-Tensor Imaging: Normative and Pathologic Diffusion Values显示文摘 | Roman Guggenberger Daniel Markovic Patrick Eppenberger Avneesh Chhabra Andreas Schiller Daniel Nanz Klaas Prüssmann Gustav Andreisek | 2012 | Radiology2012，，1： | 1 |
| 7 | Real-time path planning in dynamic virtual environment using multi-agent navigation graphs 显示文摘 | Avneesh S Erik A Sean C | 2008 | IEEE Transon Visualization and Computer Graphics2008，14，3： | 1 |
| 8 | Real-time path planning in dynamic virtual environment using multi-agent navigation graphs显示文摘 | Avneesh S Erik A Sean C | 2008 | IEEE Trans on Visualization and Computer Graph- ics2008，14，3： | 1 |
| 9 | Real -time path plan- ning in dynamic virtual environment using multi - agent navigation graphs 显示文摘 | Avneesh S Erik A Scan C | 2008 | IEEE Trans on Visualization and Computer Graphics2008，14，3： | 1 |
| 10 | Real-time path planning in dynamic virtual environment using multi-agent navigation graphs 显示文摘 | Avneesh S Erlk A Sean C | 2008 | IEEE Transcation on Visualization and Computer Graphics2008，14，3： | 1 |
| 11 | Real-time path planning in dynamic virtual environment using multiagent navigation graphs显示文摘 | Avneesh S Erik A Sean C | 2008 | IEEE Trans on Visualization and Computer Graphics2008，14，3： | 1 |
| 12 | Peripheral MR Neurography- Approach to Interpretation显示文摘 | Avneesh Chhabra | 2013 | Neuroimaging Clinics of North America2013，，： | 1 |
| 13 | Real-time path planning in dynamic virtual en- vironment using multi-agent navigation graphs显示文摘 | S Avneesh | 2008 | IEEE Trans on Visualization and Computer Graphics2008，14，3： | 1 |
| 14 | Real-time pathplanning in dynamic virtual environments using multi-a-gent navigation graphs显示文摘 | AVNEESH S ERIK A SEAN C | 2008 | IEEE Transactions on Visual-ization and Computer Graphics2008，14，3： | 1 |
| 15 | Femoroacetabular 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 | 2015 | World Journal of Orthopedics2015，6，6： | 1 |
| 16 | A Novel Process for Making Radiopaque Materials Using Bauxite-red Mud显示文摘 | Amritphale S S Avneesh Anshul Navin Chandra | 2007 | Journal of the European Ceramic Society2007，27，： | 1 |
| 17 | Real -time path planning in dynamic virtual environment using multi - agent navigation graphs 显示文摘 | Avneesh S Erik A Sean C | 2008 | IEEE Trans on Visualization and Computer Graphics2008，14，3： | 1 |
| 18 | Accessory renal arteries are not related to hypertension risk:a review of MR angiography data显示文摘 | Avneesh G Richard T | 2004 | Am J Radiol2004，182，： | 1 |
| 19 | Accessory renal arteries are not related to hypertension risk:a review of MR angiography data 显示文摘 | Avneesh G Richard T | 2004 | Am J Radiol2004，182，： | 1 |
| 20 | Sacrum magnetic resonance imaging for low back and tail bone pain:A quality initiative to evaluate and improve imaging utility显示文摘As quality and cost effectiveness become essential in clinical practice,an evidencebased evaluation of the utility of imaging orders becomes an important consideration for radiology’s value in patient care.We report an institutional quality improvement project including a retrospective review of utility of sacrum magnetic resonance(MR)imaging for low back pain at our institution over a four-year period and follow-up results after physician education intervention.Sacral MR imaging for low back pain and tailbone pain were only positive for major findings in 2/98(2%)cases,and no major changes in patient management related to imaging findings occurred over this period,resulting in almost$500000 cost without significant patient benefit.We distributed these results to the Family Medicine department and clinics that frequently placed this order.An approximately 83%drop in ordering rate occurred over the ensuing 3 mo follow-up period.Sacrum MR imaging for low back pain and tail bone pain has not been a cost-effective diagnostic tool at our institution.Physician education was a useful tool in reducing overutilization of this study,with a remarkable drop in such studies after sharing these findings with primary care physicians at the institution.In conclusion,sacrum MR imaging rarely elucidates the cause of low back/tail pain diagnosed in a primary care setting and is even less likely to result in major changes in management.The practice can be adopted in other institutions for the benefit of their patients and improve cost efficiency. | Samantha Castillo Robert Joodi L Errett Williams Parham Pezeshk Avneesh Chhabra | 2021 | World Journal of Methodology2021，11，4： | 0 |
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