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Search Results: 1 - 10 of 901 matches for " Vineet Khanna "
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Evaluation of Contrast Extravasation as a Diagnostic Criterion in the Evaluation of Arthroscopically Proven HAGL/pHAGL Lesions
Catherine Maldjian,Vineet Khanna,James Bradley,Richard Adam
Radiology Research and Practice , 2014, DOI: 10.1155/2014/283575
Abstract: Purpose. The validity of preoperative MRI in diagnosing HAGL lesions is debated. Various investigations have produced mixed results with regard to the utility of MRI. The purpose of this investigation is to apply a novel method of diagnosing HAGL/pHAGL lesions by looking at contrast extravasation and to evaluate the reliability of such extravasation of contrast into an extra-articular space as a sign of HAGL/pHAGL lesion. Methods. We utilized specific criteria to define contrast extravasation. We evaluated these criteria in 12 patients with arthroscopically proven HAGL/pHAGL lesion. We also evaluated these criteria in a control group. Results. Contrast extravasation occurred in over 83% of arthroscopically positive cases. Contrast extravasation as a diagnostic criterion in the evaluation of HAGL/pHAGL lesions demonstrated a high interobserver degree of agreement. Conclusions. In conclusion, extra-articular contrast extravasation may serve as a valid and reliable sign of HAGL and pHAGL lesions, provided stringent criteria are maintained to assure that the contrast lies in an extra-articular location. In cases where extravasation is not present, the “J” sign, though nonspecific, may be the only evidence of subtle HAGL and pHAGL lesions. Level of Evidence. Level IV, Retrospective Case-Control series. 1. Introduction Current knowledge is mixed with regard to the reliability of MRI for diagnosing HAGL/pHAGL lesions. Specific findings on MRI that have been discussed previously include direct identification of the disrupted ligament, contrast extravasation medial to the humerus, and the “J” sign. This investigation looks at areas of contrast extravasation into anatomical spaces not previously studied, such as the quadrilateral space and intra/paramuscular spaces. This greatly enhanced the diagnostic capability of MRI. While contrast extravasation medial to the humerus has previously been elucidated, this is the first study to prescribe rigorous MRI criteria in order to differentiate true extravasation of contrast from a low-lying axillary pouch or “J” sign. While the “J” sign is not specific for HAGL/pHAGL, it was the only finding in 2 patients in our HAGL/pHAGL cohort, and it may be the only finding in subtle cases. This constitutes the largest series of arthroscopically proven HAGL lesions reported thus far. This is also the only series that evaluates interobserver variability for diagnosing HAGL/pHAGL by MRI criteria and the only study that evaluates a cohort of control patients for comparison to validate the use of an MRI sign of HAGL/pHAGL lesion. Our
Lymphatic Filariasis Disseminating to the Upper Extremity
Catherine Maldjian,Vineet Khanna,Bevan Tandon,Matthew Then,Mohamed Yassin,Richard Adam,Michael J. Klein
Case Reports in Radiology , 2014, DOI: 10.1155/2014/985680
Abstract: Lymphatic filariasis is the most common cause of acquired lymphedema worldwide (Szuba and Rockson, 1998). It is endemic to tropical and subtropical regions, and its effects are devastating. With over 100 million infected persons, it ranks second only to leprosy as the leading cause of permanent and long-term disability. Wuchereria bancrofti is the etiologic agent in 90% of cases. There is a dearth of published MRI findings with pathologically proven active infections, making this entity even more of a diagnostic dilemma. Imaging may provide the first clue that one is dealing with a parasite and may facilitate proper treatment and containment of this disease. This is the first report of pathologic correlation with MRI findings in the extremity in active filariasis. The magnetic resonance images demonstrate an enhancing, infiltrative, mass-like appearance with partial encasement of vasculature that has not been previously described in filariasis. Low signal strands in T2-hyperintense dilated lymphatic channels are seen and may depict live adult worms. We hypothesize that the low signal strands correspond to the collagen rich acellular cuticle. This, in combination with the surrounding hyperintense T2 signal, corresponding to a dilated lymphatic channel, may provide more specific MRI findings for active nematodal infection, which can prompt early biopsy, pathological correlation, and diagnosis. 1. Case Report A 33-year-old male from Nepal, who immigrated to the United States 3 years ago, presented to the Emergency Department with pain and redness at his right mid-arm for 10 days. He did not appear ill and had no fever or weight loss. The area was red, swollen, and tender. There was also enlargement of axillary lymph nodes. MRI demonstrated the presence of an enhancing soft tissue mass with infiltrative features, partially encasing the brachial vessels, in addition to the axillary lymphadenopathy (Figure 1). Foci of low signal intensity were also noted on both T2 and T1 weighted images (Figure 1). Figure 1: (a) Coronal STIR MR image of the right upper arm (TR = 3100; TE = 62.24; FOV = 38?cm). There is increased T2 signal extending from the axilla along the medial soft tissues of the upper arm following the lymphatic structures and paralleling the neurovascular bundle. (b) Axial T2 TSFSE (TR = 3000; TE = 42.816; FOV = 16) at the level of the mid to distal humerus where focal soft tissue swelling is present. There is an irregular area of increased T2 signal medially containing punctate low signal foci. (c) Coronal STIR MR image (TR = 3100; TE = 62.24; FOV =
Smart Grid, Smart Controllers and Home Energy Automation—Creating the Infrastructure for Future  [PDF]
Abhishek Khanna
Smart Grid and Renewable Energy (SGRE) , 2012, DOI: 10.4236/sgre.2012.33024
Abstract: Integration of unpredictable renewable power sources into the Grid is leading to the development of wide area control algorithms and smart grid. Smart meters are the first step in the building a smart consumer interface. Much more, however, would be required in building a smart grid than just smart meters. This paper explores the conceptual architecture of smart grid. It highlights the need for additional infrastructure to realize full potential of smart grid. The information presented in this paper is an attempt to uncover what the future in smart grid could be and what infrastructure would be required to tap its potential. As smart grid evolves, more functionality would be built in the constituents. The paper also proposes mathematical basis for some of the controller algorithms.
Macrophage Dysfunction Impairs Resolution of Inflammation in the Wounds of Diabetic Mice
Savita Khanna,Sabyasachi Biswas,Yingli Shang,Eric Collard,Ali Azad,Courtney Kauh,Vineet Bhasker,Gayle M. Gordillo,Chandan K. Sen,Sashwati Roy
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0009539
Abstract: Chronic inflammation is a characteristic feature of diabetic cutaneous wounds. We sought to delineate novel mechanisms involved in the impairment of resolution of inflammation in diabetic cutaneous wounds. At the wound-site, efficient dead cell clearance (efferocytosis) is a pre-requisite for the timely resolution of inflammation and successful healing.
Determinants of IPOs Initial Return: Extreme Analysis of Indian Market  [PDF]
Rohit Bansal, Ashu Khanna
Journal of Financial Risk Management (JFRM) , 2012, DOI: 10.4236/jfrm.2012.14012
Abstract: This paper attempts to design and test empirical models, which integrate theoretical, institutional, and other factors, which interact to explain ownership structure. Ex-ante information at the level of under-pricing succeeds the Indian stock market crunch. The study is based on IPO that listed at Bombay stock exchange given that April 2000 to December 2011. Multiple linear regressions are used to distinguish the relationship between various independent variables with the dependent variable, i.e. level of underpricing. The outcomes of multiple regressions reveal that, firm’s age, IPO years, book building pricing mechanism, ownership structure, issue size, & market capitalization explained 44% of the variation in issuer under-pricing, Durbin Watson’s value subsisted 1.58, which indicates that, there is a positive sequential rela-tionship between variables. Number of share offered, issue size, market capitalization, subscription offer timing, book building mechanism and IPO years 2006, 2009 & 2011 are constructed to have important effect on the level of underpricing after the Indian market crisis. Nevertheless, firm’s age, IPOs year 2008, private issuing firms, non institutional promoters, Indian promoters and non institutional non promoters contain no significant difference in the level of underpricing after-market crisis.
A Comparative Study of Closure of Tympanic Membrane Perforation between Chemical Cauterization and Fat Plug Myringoplasty  [PDF]
Manabendra Debnath, Swagata Khanna
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2013, DOI: 10.4236/ijohns.2013.26052
Abstract:

The purpose of closure of small dry tympanic membrane perforations is to restore the continuity of the tympanic membrane in order to improve hearing and decrease the incidence of middle ear infections. Small and cost effective procedures like Chemical Cauterization and Fat Plug Myringoplasty have been found to be effective in healing small central perforations with significant hearing improvement. A study was carried out in 69 patients with central perforations in the Department of ENT, Gauhati Medical College & Hospital for the duration of 1 year from August 11 to July 12. Out of 69 patients, 36 underwent Chemical Cauterization and 33 Fat Plug Myringoplasty. Pre-and post-operative hearing assessments of each patient were done and statistically analyzed. The success rate was found to be 83.33% and 90.9% respectively. In both groups, there was statistically significant hearing improvement with a P value 0.01. From our study, it was found that the two procedures are simple, reliable and also lessened the morbidity of the patient. Thus we recommend the use of these two official procedures for the treatment of central perforations of tympanic membrane less than 5 mm.

Analytical approach to micro scale bio-film heat transport using homotopy perturbation method
vineet srivastava
International Journal of Applied Mathematics and Computation , 2009,
Abstract: In this article, we use Homotopy Perturbation Method (HPM) to find the approximate analytical solution of initial valued three dimensional microscale heat transport equation. This transport equation is at first converted into the equation of two functions. First one have both the first order time derivative and second order space derivatives, while second one has only second order space derivative. Then HPM is applied to obtain the solution. By providing suitable examples, it is proved that the obtained solution is very close to the analytical solution. It is observed that for small duration of time the source term does not affect the fundamental structure of the solution though it affects the solution for large duration of time which are depicted through graphs.
Journalism in the Age of Digital Technology
Vineet KAUL
Revista Roman? de Comunicare ?i Rela?ii Publice , 2012,
Abstract:
Vesicovaginal Fistula-A-5 Year Review
Vineet Kaur
JK Science : Journal of Medical Education & Research , 2002,
Abstract: A rctrospective analysis of 25 patients who underwent surgery for vesicovaginal fistula is herebyreported. The mean age ofpatients was 38.48 ± 10.72 years. Gynaecological surgery was the leadingfactor in etiology in 60% cases followed by obstetrical trauma in 32% and road traffic accident in8%. The primary presenting complaint was leaking of urine per vagina and the mean duration ofsymptoms was 41.81 months ± 9.90. Fistulas due to gynaecological surgical trauma were seen onthe vault. while anterior vaginal wall was involved in obstetrical trauma. 84% of patients had singlefistula, in remaining 16% two to three fistulas were demonstrated. In 20 patients. transvaginal repairwas done, remaining 5 patients underwent repair via abdominal route. Success rate of 80% wasreported in Ollr series.
Drug Therapy Trials for the Prevention of Bronchopulmonary Dysplasia: Current and Future Targets
Vineet Bhandari
Frontiers in Pediatrics , 2014, DOI: 10.3389/fped.2014.00076
Abstract:
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