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Lumbar disc cyst with contralateral radiculopathy
Kishore Tourani,Belman Murali,Akshay Sahoo,Dandu Ravi Varma
Journal of Medical and Allied Sciences , 2012,
Abstract: Disc cysts are uncommon intraspinal cystic lesions located in the ventrolateral epidural space. They communicate with the nucleus pulposus of the intervertebral disc and cause symptoms by radicular compression. We report a unique case of lumbar disc cyst that was associated with disc herniation and contralateral radiculopathy. A 22 year old male presented with one month history of back-ache radiating to the left leg. Magnetic Resonance Imaging (MRI) showed L3-L4 disc herniation with annular tear and cystic lesion in the extradural space anterior to the thecal sac on right side, which increased in size over a period of 3 weeks. L3 laminectomy and bilateral discectomy and cyst excision was done with partial improvement of patients symptoms.
Case Report: Magnetic resonance imaging in rabies encephalitis
Rao Arekapudi,Varma Dandu,Chalapathi Rao Mamidi,Mohandas Surat
Indian Journal of Radiology and Imaging , 2009,
Abstract: Rabies encephalitis is an invariably fatal disease characterized by typical clinical symptoms. Although the diagnosis of this condition can be made on the basis of the patient′s history and the classical clinical presentation, neuroimaging may still play a role, especially for establishing an early diagnosis in cases with atypical presentations or when the history of animal bite is not forthcoming. We report the MRI findings in a case of furious rabies encephalitis and describe the utility of diffusion imaging in its diagnosis.
Factors Affecting Non-Adherence among Patients Diagnosed with Unipolar Depression in a Psychiatric Department of a Tertiary Hospital in Kolkata, India
Sohini Banerjee,Ravi Prasad Varma
Depression Research and Treatment , 2013, DOI: 10.1155/2013/809542
Abstract: Non-adherence to depression treatment is a common clinical problem globally. However, limited research is available from India. This cross-sectional study aimed to assess non-adherence to prescribed treatment among patients with unipolar depression at a psychiatric out-patient department (OPD) of a tertiary hospital in Kolkata, India. The Morisky Medication Adherence Scale (MMAS) was used and a questionnaire designed by the Principal Investigator (PI) was administered. A total of 239 patients with unipolar depression were interviewed of whom 66.9% (160) were non-adherent and 33.1% (79) were adherent to treatment. The difference was significant (Fisher’s Exact ). Women were nearly three times at a higher risk of being non-adherent compared to men (OR 2.7; 95% CI 1.0–7.1). The non-adherent group compared to the adherent group was significantly more likely to consume extra medicines than the recommended amount (OR 2.8; 95% CI 1.1–7.3) and had lower internal locus of control (LOC) (OR 4.5; 95% CI 2.4–8.3). Adherence to prescribed treatment in an out-patient clinical setting was a problem among patients with unipolar depression. Suitable interventions on individuals with the above mentioned attributes are required in India and in similar settings where non-adherence to depression therapy is an important public health problem. 1. Introduction Adherence (“extent to which a person’s behaviour corresponds with medical or health advice provided by a health care provider”) [1, 2] to therapy is emerging as a major public health challenge globally—both for communicable (tuberculosis, HIV/AIDS) and noncommunicable (depression, diabetes) diseases. The consequences of poor/non-adherence are extensive. It negatively impacts treatment effectiveness thus resulting in poor therapeutic outcomes. Non-adherence in some instances could result in serious complications requiring the individual to be hospitalised. This not only adds considerable physical strain and mental agony to the individual and the family but results in economic burden as well. It also adds pressure on the health system. Moreover, research indicates medication non-adherence may have a damaging effect on the individual’s health related quality of life (QOL) [3]. Non-adherence to treatment is a well-documented issue in the care of unipolar or major depression. According to World Health Report, 1999 [4] and the Global Burden of Disease (GBD) Update, 2004 [5] in 1990, depression was the fourth leading cause of overall disease burden and is emerging as a major public health challenge with regard to its
Endovascular management of a refractory traumatic aneurysm of the internal carotid artery using a covered stent graft
Pai Balaji,Limaye Uday,Varma Ravi
Neurology India , 2008,
Abstract:
Effects of Thermal Radiation and Radiation Absorption on Flow Past an Impulsively Started Infinite Vertical Plate with Newtonian Heating and Chemical Reaction  [PDF]
Swetha Ravi, Jagdish Prakash, Viswanatha Reddy Gottam, Vijaya Kumar Varma Sibyala
Open Journal of Fluid Dynamics (OJFD) , 2015, DOI: 10.4236/ojfd.2015.54036
Abstract: A perfect solution to the present natural convective flow problem of a vertical transfinite plate owing to the impulsive motion in the ubiety of first ordered chemical reaction, radiation absorption, radiation, Newtonian heating and species concentration in its plane is evolved by applying the method of Laplace transforms in closed form at the plate. Exact results for velocity, temperature, concentration fields are prevailed and expressions for heat and mass transfer rates are also found. The effects are analyzed for the respective invariables for both ammonia and water vapor.
Fast image reconstruction for fluorescence microscopy
Mahesh Ravi Varma,K. Rajan,Partha Pratim Mondal
AIP Advances , 2012, DOI: 10.1063/1.4754604
Abstract: Real-time image reconstruction is essential for improving the temporal resolution of fluorescence microscopy. A number of unavoidable processes such as, optical aberration, noise and scattering degrade image quality, thereby making image reconstruction an ill-posed problem. Maximum likelihood is an attractive technique for data reconstruction especially when the problem is ill-posed. Iterative nature of the maximum likelihood technique eludes real-time imaging. Here we propose and demonstrate a compute unified device architecture (CUDA) based fast computing engine for real-time 3D fluorescence imaging. A maximum performance boost of 210× is reported. Easy availability of powerful computing engines is a boon and may accelerate to realize real-time 3D fluorescence imaging.
Reinke′s edema
Jain Sanjay,Varma Ravi,Hazarika Biswajyoti,Pradhan Sultan
Indian Journal of Radiology and Imaging , 2009,
Abstract: A unique imaging dilemma is presented where vocal fold thickening due to Reinke′s edema mimicked tumor invasion of the vocal cords in a known case of thyroid malignancy.
Intraventricular hydatid cyst in a child
Kamath Sulata,Mysorekar Vijaya,Rao Saraswathi,Varma Ravi
Indian Journal of Pathology and Microbiology , 2009,
Abstract: Hydatid disease is caused by the infestation of the larvae of tapeworms of the genus Echinococcus. The definitive hosts of Echinococcus are various carnivores, the common being the dog. All mammals (more often sheep and cattle) are intermediate hosts. Humans get infected through the feco-oral route by ingestion of food or milk contaminated by dog feces containing ova of the parasite or by direct contact with dogs. The most common sites of infestation are the liver (75%) and lungs (15%). Various authors state a frequency of hydatidosis of the brain ranging between only 0.2-4% of cases. [1],[2],[3] The prognosis following surgical intervention is good, especially in pediatric age. [2],[3] Hence early diagnosis of this condition is crucial. We report a rare case of a child with a large intraventricular hydatid cyst that had an excellent recovery following surgery.
Microsurgical anatomy of the posterior circulation
Pai Balaji,Varma Ravi,Kulkarni Raghavendra,Nirmala S
Neurology India , 2007,
Abstract: Context: The microsurgical anatomy of the posterior circulation is very complex and variable. Surgical approaches to this area are considered risky due to the presence of the various important blood vessels and neural structures. Aims: To document the microsurgical anatomy of the posterior circulation along with variations in the Indian population. Materials and Methods: The authors studied 25 cadaveric brain specimens. Microsurgical dissection was carried out from the vertebral arteries to the basilar artery and its branches, the basilar artery bifurcation, posterior cerebral artery and its various branches. Measurements of the outer diameters of the vertebral artery, basilar artery and posterior cerebral artery and their lengths were taken. Results: The mean diameter of the vertebral artery was 3.4 mm on the left and 2.9 mm on the right. The diameter of the basilar artery varied from 3-7 mm (mean of 4.3 mm). The length varied from 24-35 mm (mean of 24.9 mm). The basilar artery gave off paramedian and circumferential perforating arteries. The origin of the anterior inferior cerebellar artery (AICA) varied from 0-21 mm (mean 10.0 mm) from the vertebrobasilar junction. The diameter of the AICA varied from being hypoplastic i.e., < 0.5 mm to 2 mm (mean 1.0 mm). The superior cerebellar artery (SCA) arises very close to the basilar bifurcation, in our series (1-3 mm from the basilar artery bifurcation). The diameter of the SCA varied from 0.5-2.5 mm on both sides. The posterior cerebral artery (PCA) is divided into four segments. The PCA gave rise to perforators (thalamoperforators, thalamogeniculate arteries, circumflex arteries and peduncular arteries), medial posterior choroidal artery, lateral posterior choroidal artery and cortical branches. In 39 specimens the P1 segment was found to be larger than the posterior communicating artery, in six specimens it was found to be equal to the diameter of the posterior communicating artery and in five specimens it was found to be smaller than the posterior communicating artery diameter (fetal circulation). Conclusions: The authors have documented the various anomalies as well as the differences of the anatomy in this area in the Indian population as compared to the Western literature.
Application Denial of Service Attacks Detection using Group Testing Based Approach
P.Ravi Kiran Varma,D.Sai Krishna
International Journal of Computer Science and Communication Networks , 2012,
Abstract: In this paper we explore the mechanisms for detecting the application dos attacks which is a new class of Dos attack. It aims at disrupting the application service rather than depleting the network services. These possess severe threat to Internet Security. Detection and prevention of these attacks are harder compared to classic dos attacks. These attacks have high similarity with legitimate traffic so tracing the attack origin is more difficult. We proposed a new novel Group testing which provide short detection delay and low false positive/negative rate. We propose a two mode detection mechanism using some dynamic threshold for identifying the attackers efficiently.
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