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Advancements and challenges in neuroimaging for the diagnosis of intracranial aneurysms:Addressing false positive diagnoses and emerging techniques

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World Journal of Clinical Cases 2025年第6期13卷 48-50页

作者： Nanthida arora Sombat Muengtaweepongsa Center of Excellence in Stroke Thammasat UniversityPathum Thani 12120Thailand Center of Excellence in Stroke Division of NeurologyDepartment of MedicineFaculty of MedicineThammasat University Rangsit CampusKlonglaung 12120Pathum ThaniThailand

Despite advancements in neuroimaging,false positive diagnoses of intracranial aneurysms remain a significant *** article examines the causes,prevalence,and implications of such false-positive *** discuss how conditions like arterial occlusion with vascular stump formation and infundibular widening can mimic aneurysms,particularly in the anterior *** article compares various imaging modalities,including computer tomography angiogram,magnetic resonance imaging/angiography,and digital subtraction angiogram,highlighting their strengths and *** emphasize the im-portance of accurate differentiation to avoid unnecessary surgical *** potential of emerging technologies,such as high-resolution vessel wall ima-ging and deep neural networks for automated detection,is explored as promising avenues for improving diagnostic *** manuscript underscores the need for continued research and clinical vigilance in the diagnosis of intracranial aneurysms.

关键词： Intracranial aneurysms Neuroimaging techniques Computed tomographic angiography Magnetic resonance angiography Digital subtraction angiography False positive diagnoses

Congenital anomalies of coronary artery misdiagnosed as coronary dilatations in Kawasaki disease:A clinical predicament

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World Journal of Clinical Pediatrics 2025年第1期14卷 93-100页

作者： Rakesh Kumar Pilania Pallavi L Nadig Suprit Basu Reva Tyagi Abarna Thangaraj Ridhima Aggarwal Munish arora Arun Sharma Surjit Singh Manphool Singhal Pediatric Allergy Immunology Unit Department of PediatricsAdvanced Pediatrics CenterPost Graduate Institute of Medical Education and ResearchChandigarh 160012ChandīgarhIndia Department of Radiodiagnosis and Imaging Postgraduate Institute of Medical Education and ResearchChandigarh 160012ChandīgarhIndia

BACKGROUND 2D-echocardiography(2DE)has been the primary imaging modality in children with Kawasaki disease(KD)to assess coronary *** To report the presence and implications of incidental congenital coronary artery anomalies that had been misinterpreted as coronary artery abnormalities(CAAs)on *** Records of children diagnosed with KD,who underwent computed tomography coronary angiography(CTCA)at our center between 2013-2023 were *** identified 3 children with congenital coronary artery anomalies in this cohort on *** of CTCA and 2DE were compared in these 3 *** Of the 241 patients with KD who underwent CTCA,3(1.24%)had congenital coronary artery anomalies on CTCA detected *** all 3 patients,baseline 2DE had identified *** was then performed for detailed evaluation as per our unit ***(11-year-boy)amongst the 3 patients had complete KD,while the other two(3.3-year-boy;4-month-girl)had incomplete *** revealed separate origins of left anterior descending artery and left circumflex from left sinus[misinterpreted as dilated left main coronary artery(LCA)on 2DE],single coronary artery(interpreted as dilated LCA on 2DE)and dilated right coronary artery on 2DE in case of anomalous origin of LCA from the main pulmonary *** latter one was subsequently operated *** CTCA is essential for detailed assessment of coronary arteries in children with KD especially in cases where there is suspicion of congenital coronary artery *** solely on 2DE may not be sufficient in such cases,and findings from CTCA can significantly impact therapeutic decision-making.

关键词： Coronary artery abnormalities Congenital coronary artery anomalies Computed tomography coronary angiography Kawasaki disease 2-dimensional echocardiography

Antitumorigenic Potential of Diallyl Sulfide in Ehrlich Ascites Tumor Bearing Mice

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Biomedical and Environmental Sciences 2002年第1期15卷 41-47页

作者： ShukY arora EnvironmentalCarcinogenesisDivision IndustrialToxicologyResearchCentreM.G.MargP.O.Box80Lucknow－226001India EnvironmentalCarcinogenesisDivision IndustrialToxicologyResearchCentreM.G.MargP.O.Box80

Objective To study the effects of diallyl sulfide (DAS), an organosulfur compoundpresent in garlic (Allium sativum), on the life span of ehrlich ascites (EA) tumor bearingSwiss albino mice, cytotoxicity and angiogenesis. Methods EA tumor cells weremaintained by serial transplantation in peritoneal cavity of male Swiss albino mice. EAtumor cells were inoculated at concentrations of 1× 106 EA cells, 2.5× 106 EA cells and5× 106 EA cells. DAS was given in 0.2 ml normal saline i. p., daily for seven days followedone hour later by inoculation with EA cells in respective groups. Results The resultsrevealed that administration of DAS increased the life span of EA tumor bearing animals bymore than 25 percent. A significant dose dependant cytotoxic response of DAS was alsoobserved on EA tumor cells. DAS was also found to inhibit the angiogenesis in EA tumorbearing mice in a dose dependent manner. Conclusion It is suggested that DAS may exertits anticarcinogenic effects by more than one mechanism and is a useful chemopreventiveand chemotherapeutic agent.

关键词： Garlic Life span Ehrlich ascites EA tumor cells Cytotoxicity Angiogenesis

Area Estimates of Images of Disks under Analytic Functions

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Acta Mathematica Sinica,English Series 2021年第10期37卷 1533-1548页

作者： Vibhuti arora Swadesh Kumar SAHOO Discipline of Mathematics Indian Institute of Technology IndoreIndore 453552India

Let D_(r):={z=x+iy∈C:|z|0,in principal powers,when f ranges over certain classes of analytic and univalent functions in D.

关键词： Univalent functions starlike functions convex functions spirallike functions Dirichlet finite area problem

Inhibition of nitrification in soil by metal diethyldithiocarbamates

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Journal of Environmental Sciences 2003年第5期15卷 607-610页

作者： A.arora Bijay Singh Dhiraj Sud T.Srivastava C.L.arora PunjabAgriculturalUniversity PunjabAgriculturalUniversitySantLongowalInstituteofEngineering&TechnologySantLongowalInstituteofEngineering&TechnologyPunjabAgriculturalUniversity Ludhiana141004PunjabIndiaLudhiana141004PunjabIndiaLongowalPunjabIndiaLongowalPunjabIndiaLudhiana141004PunjabIndia

Nitrification acts as a key process in determining fertilizer use efficiency by crops as well as nitrogen losses from soils. Metal dithiocarbamates in addition to their pesticidal properties can also inhibit biological oxidation of ammonium(nitrification) in soil. Metal [M=V(Ⅲ), Cr(Ⅲ), Mn(Ⅱ), Fe(Ⅲ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ) and Co(Ⅱ)] diethyldithiocarbamates (DEDTC) were synthesized by the reaction of sodium diethyldithiocarbamate with metal chloride in dichloromethane/water mixture. These metal diethyldithiocarbamates were screened for their ability to inhibit nitrification at different concentrations(10 μg/g soil, 50 μg/g soil and 100 μg/g soil). With increasing concentration of the complex, capacity to retard nitrification increased but the extent of increase varied for different metals. At 100 μg/g soil, different complexes showed nitrification inhibition from 22 36% to 46 45%. Among the diethyldithiocarbamates tested, Zn(DEDTC) 2 proved to be the most effective nitrification inhibitor at 100 μg/g soil. Manganese, iron and chromium diethyldithiocarbamates also proved to be effective nitrification inhibitors than the others at 100 μg/g soil. The order of percent nitrification inhibition in soil by metal diethyldithiocarbamates was: Zn(Ⅱ) > Mn(Ⅱ) > Fe(Ⅲ) > Cr(Ⅲ) >V(Ⅲ) > Co(Ⅱ) > Ni(Ⅱ) > Cu(Ⅱ).

关键词： nitrification inhibitor diethyldithiocarbamate metal complexes nitrogenous fertilizers pesticides

A New Classification Scheme of Fluorite Deposits

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International Journal of Geosciences 2017年第4期8卷 599-610页

作者： rajni Magotra Stanzin Namga Pawan Singh Neha arora P.K. Srivastava Economic Geology Research Group Department of Geology University of Jammu Jammu India

Fluorite deposits occur in a variety of geologic environments throughout the globe. It may occur as the main or only economically recoverable ore mineral in deposits or may present as the accessory gangue minerals with other ores. It is therefore necessary to understand various genetic types of the fluorite deposit. The present paper synthesises the information of some of the known fluorite mineralisation from the world so that an understanding of them can help in establishing reliable criteria for further search of fluorite deposit. On the basis of a combination of geological background information and fluorite geochemistry, a new classification scheme is proposed.

关键词： Fluorite Classification Genetic Types REE Characteristics

Physical model simulation of rock-support interaction for the tunnel in squeezing ground

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Journal of Rock Mechanics and Geotechnical Engineering 2022年第1期14卷 82-92页

作者： Ketan arora Marte Gutierrez Ahmadreza Hedayat Civil and Environmental Engineering Colorado School of MinesGoldenCO80401USA

The existence of squeezing ground conditions can lead to significant challenges in designing an adequate support system for *** empirical,observational and analytical methods have been suggested over the years to design support systems in squeezing ground conditions,but all of them have some *** this study,a novel experimental setup having physical model for simulating the tunnel boring machine(TBM)excavation and support installation process in squeezing clay-rich rocks is *** observations are made to understand better the interaction between the support and the squeezing *** physical model included a large true-triaxial cell,a miniature TBM,laboratoryprepared synthetic test specimen with properties similar to natural mudstone,and an instrumented cylindrical aluminum support *** were conducted at realistic in situ stress levels to study the time-dependent three-dimensional tunnel support *** tunnel was excavated using the miniature TBM in the cubical rock specimen loaded in the true-triaxial cell,after which the support was *** confining stress was then increased in stages to values greater than the rock’s unconfined compressive strength.A model for the time-dependent longitudinal displacement profile(LDP)for the supported tunnel was proposed using the tunnel convergence measurements at different times and stress *** LDP formulation was then compared with the unsupported model to calculate the squeezing amount carried by the *** increase in thrust in the support was backcalculated from an analytical solution with the assumption of linear elastic *** on the test results and case studies,a recommendation to optimize the support requirement for tunnels in squeezing ground is proposed.

关键词： Squeezing ground Tunnel support system Longitudinal displacement profile Rock-support interaction

Recent progress in contact, mobility, and encapsulation engineering of InSe and GaSe

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InfoMat 2021年第6期3卷 662-693页

作者： Himani arora Artur Erbe Helmholtz-Zentrum Dresden-Rossendorf DresdenGermany Faculty of Physics and Center for Advancing Electronics Dresden Technische Universität DresdenDresdenGermany

The field of two-dimensional(2D)materials has stimulated considerable interest in the scientific *** to quantum confinement in one direction,intriguing properties have been reported in 2D materials that cannot be observed in their bulk *** advent of semiconducting 2D materials with a broad range of electronic properties has provided fascinating opportunities to design and configure next-generation *** such emerging class is the family of III-VI monochalcogenides,the two prominent members of which are indium selenide(InSe)and gallium selenide(GaSe).In contrast to transition metal dichalcogenides,their high intrinsic mobility and the availability of a direct bandgap at small thicknesses have attracted researchers to investigate the underlying physical phenomena as well as their technological ***,the sensitivity of InSe and GaSe to environmental influences has limited their exploitation in functional *** lack of methods for their scalable synthesis further hinders the realization of their *** review article outlines recent advancements in the synthesis and understanding of the charge transport properties of InSe and GaSe for their integration into technological applications.A detailed summary of the improvements in the device structure by optimizing extrinsic factors such as bottom substrates,metal contacts,and device fabrication schemes is ***,various encapsulation techniques that have been proven effective in preventing the degradation of InSe and GaSe layers under ambient conditions are thoroughly ***,this article presents an outlook on future research ventures with respect to ongoing developments and practical viability of these materials.

关键词： 2D materials 2D transistors electronic properties gallium selenide indium selenide vdW semiconductors

Esophageal melanosis:Two case reports and review of literature

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World Journal of Gastroenterology 2024年第42期30卷 4557-4565页

作者： Liubou Kazacheuskaya Kshitij arora Department of Pathology Louisiana State University HealthShreveportLA 71103United States

Esophageal melanosis(EM)is a rare condition characterized by melanin pigmentation in the esophageal *** is not well understood and has been documented in less than 100 cases *** SUMMARY We report two cases of African American patients who complained of significant weight loss(over 20 pounds in approximately six months)and abdominal pain during their first *** first case involves a 54-year female with a history of hepatic steatosis and polysubstance abuse,who also experiences nausea and *** second case is a 59-year-old male with hypertension and gastroesophageal reflux disease(GERD),who was diagnosed with esophageal squamous cell *** cases show benign melanocytes in the basal layer on the esophagus biopsy and are diagnosed as *** It is important to note that EM has been associated with malignancies such as carcinoma and ***,accurate diagnosis and appropriate management are *** with EM,especially those with concurrent risk factors(e.g.,GERD,smoking),should be carefully monitored for any signs of malignancy.

关键词： Esophagus Melanoblasts Esophageal melanosis Gastroesophageal reflux disease Case report