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18篇 您的检索式:作者名="Ashu Kumar"
    题名 作者 年代 出处 被引量
1Pediatric vs adult pulmonary tuberculosis:A retrospective computed tomography study显示文摘AIM: To compare the manifestations of chest tuberculosis(TB) in pediatric and adult patients based on contrast enhanced computed tomography of chest.METHODS: This was a retrospective study consisting of 152 patients of chest TB including 48 children and 104 adults who had undergone contrast enhanced computed tomography of chest prior to treatment. The patterns and severity of parenchymal, mediastinal and pleural manifestations were analyzed and compared among different age groups.RESULTS: Parenchymal changes observed include consolidation, air space nodules, miliary TB, cavitation, bronchiectasis and fibrosis and these were noted in 60% of children, 71% of adolescents and 76.9% of adults. These changes were more common in right upper lobe in all age groups. There was no significant difference in the frequency of these changes(except nodules) in different age groups. Centrilobular nodules were seen less commonly in children less than 10 years(P = 0.028). Pleural effusion was noted in 28(18.42%) patients and pericardial effusion in 8(5.3%) patients. No significant difference in the serosal involvement is seen among children and adults. Mediastinal adenopathy was seen 70% of children, 76.3% adolescents and 76.9% of adults and paratracheal nodes were seen most frequently. Nodes had similar features(except matting) among all age groups. Matting of nodes was seen more commonly in children(P = 0.014). CONCLUSION: Pediatric chest tuberculosis can have severe parenchymal lesions and nodal involvement similar to adults. The destructive lung changes observed in children needs immediate attention in view of the longer life span they have and hence in formulating optimal treatment strategies.Prasad Thotton Veedu Ashu Seith Bhalla Sreenivas Vishnubhatla Sushil Kumar Kabra Arundeep Arora Divya Singh Arun Kumar Gupta 2013World Journal of Clinical Pediatrics2013,2,4:2
2Clinical, radiological and functional assessment of pulmonary status in patients with achalasia cardia before and after treatment显示文摘Rajinder Parshad Sudheer Kumar Devana Karthik Panchanatheeswaran Anoop Saraya Govind K. Makharia Surendra Kumar Sharma Ashu Seith Bhalla 2012European Journal of Cardio-Thoracic Surgery2012,,5:1
3Development and Comparative Evaluation of a Plate Enzyme-Linked Immunosorbent Assay Based on Recombinant Outer Membrane Antigens Omp28 and Omp31 for Diagnosis of Human Brucellosis显示文摘Sapana Tiwari Ashu Kumar Duraipandian Thavaselvam Smita Mangalgi Vedika Rathod Archana Prakash Anita Barua Sonia Arora Kannusamy Sathyaseelan 2013Clinical and Vaccine Immunology2013,,8:1
4Short-term water demand forecast modeling at IIT Kanpur using artificial neural networks显示文摘Ashu Jain Ashish Kumar Varshney Umesh Chandra Joshi 2001Water Resources Management2001,15,5:1
5Hubrid neural network models for hydrologic time series forecasting 显示文摘Ashu Jain Avadhnam Madhav Kumar 2007Applied Soft Computing2007,7,:1
6MR evaluation of biliary-enteric anastomotic stricture: Does contrast-enhanced T1W MRC provide additional information?显示文摘Devasenathipathy Kandasamy Raju Sharma Ashu Seith Bhalla Shivanand R. Gamanagatti Deep N. Srivastava Peush Sahni Rakesh Kumar 2011Clinics and Research in Hepatology and Gastroenterology2011,,8:1
7Short - Term Water Demand Forecast Modeling at IIT Kanpur using Artificial Neural Network 显示文摘Jain Ashu Kumar Varshney Ashish Chandra Joshi Umesh 2001WaterResource-Management2001,15,5:1
8Benign neck masses showing restricted diffusion: Is there a histological basis for discordant behavior?显示文摘Diffusion weighted imaging(DWI) evolved as a complementary tool to morphologic imaging by offering additional functional information about lesions. Although the technique utilizes movement of water molecules to characterize biological tissues in terms of their cellularity, there are other factors related to the histological constitution of lesions which can have a significant bearing on DWI. Benign lesions with atypical histology including presence of lymphoid stroma, inherently increased cellularity or abundant extracellular collagen can impede movement of water molecules similar to malignant tissues and thereby, show restricted diffusion. Knowledge of these atypical entities while interpreting DWI in clinical practice can avoid potential misdiagnosis. This review aims to present an imaging spectrum of such benign neck masses which, owing to their distinct histology, can show discordant behavior on DWI.Abanti Das Ashu S Bhalla Raju Sharma Atin Kumar Meher Sharma Shivanand Gamanagatti Alok Thakar Suresh Sharma 2016World Journal of Radiology2016,8,2:1
9Cloning and Expression of Immunoreactive Brucella melitensis 28 kDa Outer - membrane Protein ( OMP28 ) Encoding Gene and Evaluation of the Potential of OMP28 for Clinical Diagnosis of Brucellosis显示文摘Duraipandian Thavaselvan Ashu Kumar Sapana Tiwari 2010Med Microbio12010,59,:1
10Non-ionic surfactant vesicles mediated transcutaneous immunization against hepatitis B显示文摘Chetan Maheshwari R.S. Pandey Akash Chaurasiya Ashu Kumar D.T. Selvam G.B.K.S. Prasad V.K. Dixit 2011International Immunopharmacology2011,,10:1
11Short-Term Water Demand Forecast Modeling at IIT Kanpur using Artifical Neual Network显示文摘Jain Ashu Kumar Varshney Ashish Chandra Joshi Umesh 2001Water Resource Management2001,15,5:1
12Short-termwater demand forecast modelling at IIT Kanpur using artificial neural networks显示文摘Ashu Jain Ashish Kumar Varshney Umesh Chandra Joshi 2001Water resources management2001,15,:1
13Short-term water demand forecast modeling at IIT Kanpur using artificial neural networks显示文摘ASHU JAIN ASHISH KUMAR VARSHNEY UMESH CHANDRA JOSHI 2001Water Resources Management2001,,15:1
14MODELING AND ANALYSIS OF SALT TRANSPORT IN THE SINGLE CYLINDRICAL ROOT WITH FINITE LENGTH显示文摘ARUN KUMAR BEENA SHARMA ASHU RANI 2013International Journal of Biomathematics2013,6,6:0
15Contrast-enhanced multidetector computed tomography features and histogram analysis can differentiate ameloblastomas from central giant cell granulomas显示文摘BACKGROUND No qualitative or quantitative analysis of contrast-enhanced computed tomography(CT)images has been reported for the differentiation between ameloblastomas and central giant cell granulomas(CGCGs).AIM To describe differentiating multidetector CT(MDCT)features in CGCGs and ameloblastomas and to compare differences in enhancement of these lesions qualitatively and using histogram analysis.METHODS MDCT of CGCGs and ameloblastomas was retrospectively reviewed to evaluate qualitative imaging descriptors.Histogram analysis was used to compare the extent of enhancement of the soft tissue.Fisher’s exact tests and Mann–Whitney U test were used for statistical analysis(P<0.05).RESULTS Twelve CGCGs and 33 ameloblastomas were reviewed.Ameloblastomas had a predilection for the posterior mandible with none of the CGCGs involving the angle.CGCGs were multilocular(58.3%),with a mixed lytic sclerotic appearance(75%).Soft tissue component was present in 91%of CGCGs,which showed hyperenhancement(compared to surrounding muscles)in 50%of cases,while the remaining showed isoenhancement.Matrix mineralization was present in 83.3%of cases.Ameloblastomas presented as a unilocular(66.7%),lytic(60.6%)masses with solid components present in 81.8%of cases.However,the solid component showed isoenhancement in 63%.No matrix mineralization was present in 69.7%of cases.Quantitatively,the enhancement of soft tissue in CGCG was significantly higher than in ameloblastoma on histogram analysis(P<0.05),with a minimum enhancement of>49.05 HU in the tumour providing 100%sensitivity and 85%specificity in identifying a CGCG.CONCLUSION A multilocular,lytic sclerotic lesion with significant hyperenhancement in soft tissue,which spares the angle of the mandible and has matrix mineralization,should indicate prospective diagnosis of CGCG.Adarsh Ghosh Meyyappan Lakshmanan Smita Manchanda Ashu Seith Bhalla Prem Kumar Ongkila Bhutia Asit Ranjan Mridha 2022World Journal of Radiology2022,14,9:0
16Transport of solutes under transient flow conditions–A case study–Yamuna river sub basin(Kosi Kalan to Agra)显示文摘The imbalance between incoming and outgoing salt causes salinization of soils and sub-soils that result in increasing the salinity of stream-flows and agriculture land.This salinization is a serious environmental hazard particularly in semi-arid and arid lands.In order to estimate the magnitude of the hazard posed by salinity,it is important to understand and identify the processes that control salt movement from the soil surface through the root zone to the ground water and stream flows.In the present study,Yamuna sub-basin(both sides of Gokul dam site)has been selected which has two distinct climatic zones,sub-humid(upstream of Mathura)and semi-arid region(downstream of Mathura).In the upstream,both surface and ground waters are used for irrigation,whereas in the downstream mostly groundwater is used.Both soils and ground waters are more saline in downstream parts of the study area.In this study we characterized the soil salinity and groundwater quality in both areas.An attempt is also made to model the distribution of potassium concentration in the soil profile in response to varying irrigation conditions using the Soil-Water Infiltration and Movement(SWIM)model.Fair agreement was obtained between predicted and measured results indicating the applicability of the model.Arun Kumar Ajay Kumar Sharma Ashu Rani 2015International Soil and Water Conservation Research2015,3,3:0
17Diagnosis of osteopetrosis in bilateral congenital aural atresia: Turning point in treatment strategy显示文摘Aural atresia is a rare congenital malformation of the external and middle ear. There are several syndromic associations of this anomaly with those involving the first and second branchial arches. Occurrence of aural atresia with sclerosing skeletal dysplasia is unknown and has never been reported. The coexistence of a sclerosing dysplasia can make the surgical treatment in aural atresia difficult and risky; and the auditory improvement may not be as expected. Moreover, internal auditory canal narrowing and hence sensorineural hearing loss in sclerosing dysplasia might add to the already existing conductive hearing loss in such patients. In this case report we have described an unknown association of bilateral microtia with sclerosing skeletal dysplasia(autosomal dominant osteopetrosis) and clinical implications of these two conditions occurring together leading to a change in the management plan.Ritu Verma Manisha Jana Ashu Seith Bhalla Arvind Kumar Rakesh Kumar 2016World Journal of Clinical Pediatrics2016,5,2:0
18Multidetector computed tomography imaging of congenital anomalies of major airways:A pictorial essay显示文摘Congenital airway anomalies can be asymptomatic or may cause severe respiratory distress requiring immediate treatment.These anomalies can present early in life,or may be just incidental findings.It is important to recognize these entities to realize their clinical significance and to avoid false diagnosis.In this article, the various congenital airway anomalies and their imaging features by multidetector computed tomography (MDCT)are reviewed in order of occurrence during the embryological timeline.This pictorial essay reviews the various distinct congenital airway lesions and their MDCT manifestations.It also provides insight into the embryological basis of the congenital airway lesions encountered.Dinesh Kumar Sundarakumar Ashu Seith Bhalla Raju Sharma Arun Kumar Gupta Susheel Kumar Kabra Priya Jagia 2011World Journal of Radiology2011,3,12:0
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