keyword
https://read.qxmd.com/read/37968912/numerical-investigation-of-unruptured-middle-cerebral-artery-bifurcation-aneurysms-influence-of-aspect-ratio
#1
JOURNAL ARTICLE
Chanikya Valeti, Saravanan Gurusamy, K Krishnakumar, Hariharan Venkat Easwer, Santhosh K Kannath, B J Sudhir, B S V Patnaik
An aneurysm is a disease condition, which is due to the pathological weakening of an arterial wall. These aneurysms are often found in various branch points and bifurcations of an artery in the cerebral circulation. Most aneurysms come to medical attention, either due to brain hemorrhages caused by rupture or found unruptured. To consider surgically invasive treatment modalities, clinicians need scientific methods such as, hemodynamic analysis to assess rupture risk. The arterial wall loses its structural integrity when wall shear stress (WSS) and other hemodynamic parameters exceed a certain threshold...
November 16, 2023: Computer Methods in Biomechanics and Biomedical Engineering
https://read.qxmd.com/read/37521238/widespread-polymorphous-pruritic-eruptions-the-neglected-parasitic-imitator
#2
JOURNAL ARTICLE
Gowtham Saravanan, Hima Gopinath, Kaliaperumal Karthikeyan, Valeti Meghana
No abstract text is available yet for this article.
2023: Indian Dermatology Online Journal
https://read.qxmd.com/read/36912001/iron-iii-catalyzed-regioselective-synthesis-of-electron-rich-benzothiazoles-from-aryl-isothiocyanates-via-c-h-functionalization
#3
JOURNAL ARTICLE
Bokka Srinivas, Kotari Shakeena, Durgeswari Lakkavarapu Kota, Valeti Abhinav, Pyla Eswar, Rongali Geetha Sravani, Anandam Sampath Pavan Kumar, Kiran Indukuri, Kumpatla Ayyappa Dhanaraju, Muthyala Murali Krishna Kumar, Santhosh Kumar Alla
We report herein a direct synthetic route for the preparation of 2-arylbenzothiazoles using aryl isothiocyanates and electron-rich arenes. The synthetic route involves triflic acid promoted addition of the arenes to aryl isothiocyanates followed by FeCl3 -catalyzed C-S bond formation via C-H functionalization. The approach provides the advantage of synthesis of benzothiazoles without the conventional use of aryl aldehyde/carboxylic acid precursors employing the less expensive iron(III) catalyst.
March 13, 2023: Journal of Organic Chemistry
https://read.qxmd.com/read/33235842/face-and-neck-pigmentary-alterations-in-hair-dye-users-a-cross-sectional-study-from-south-india
#4
JOURNAL ARTICLE
Valeti Meghana, Hima Gopinath, Kaliaperumal Karthikeyan, Vinayagamoorthy Venugopal
Background: Hair dyes are commonly used for the concealment of grey hair in India. The pigmentary alterations produced by hair dyes on the face and neck have not received sufficient attention. Aims: To study the pigmentary alterations on the face and neck in hair dye users, and identify possible risk factors associated with the face and neck hyperpigmentation. Methods: A hospital-based descriptive cross-sectional study was done on consecutive hair dye users...
September 2020: Indian Dermatology Online Journal
https://read.qxmd.com/read/33037162/for-the-love-of-color-plant-colors-and-the-dermatologist
#5
REVIEW
Hima Gopinath, Kaliaperumal Karthikeyan, Valeti Meghana
Humans have been anointing their skin with natural colorants since antiquity. Before the advent of modern cosmetics, tattoos and hair dyes, the spectacular colors in plants served as a palette for humanity's fascination with color. Skin, hair, nails, teeth and clothing have been altered with botanical colorants for centuries. Understanding the relevance of botanical colorants is an important part of cultural competency. Substitution or adulteration of plant colorants with synthetic colorants has played a role in varied dermatoses (eg...
2020: Indian Journal of Dermatology, Venereology and Leprology
https://read.qxmd.com/read/32584909/machine-learning-insight-into-the-role-of-imaging-and-clinical-variables-for-the-prediction-of-obstructive-coronary-artery-disease-and-revascularization-an-exploratory-analysis-of-the-conserve-study
#6
RANDOMIZED CONTROLLED TRIAL
Lohendran Baskaran, Xiaohan Ying, Zhuoran Xu, Subhi J Al'Aref, Benjamin C Lee, Sang-Eun Lee, Ibrahim Danad, Hyung-Bok Park, Ravi Bathina, Andrea Baggiano, Virginia Beltrama, Rodrigo Cerci, Eui-Young Choi, Jung-Hyun Choi, So-Yeon Choi, Jason Cole, Joon-Hyung Doh, Sang-Jin Ha, Ae-Young Her, Cezary Kepka, Jang-Young Kim, Jin-Won Kim, Sang-Wook Kim, Woong Kim, Yao Lu, Amit Kumar, Ran Heo, Ji Hyun Lee, Ji-Min Sung, Uma Valeti, Daniele Andreini, Gianluca Pontone, Donghee Han, Todd C Villines, Fay Lin, Hyuk-Jae Chang, James K Min, Leslee J Shaw
BACKGROUND: Machine learning (ML) is able to extract patterns and develop algorithms to construct data-driven models. We use ML models to gain insight into the relative importance of variables to predict obstructive coronary artery disease (CAD) using the Coronary Computed Tomographic Angiography for Selective Cardiac Catheterization (CONSERVE) study, as well as to compare prediction of obstructive CAD to the CAD consortium clinical score (CAD2). We further perform ML analysis to gain insight into the role of imaging and clinical variables for revascularization...
2020: PloS One
https://read.qxmd.com/read/31290462/insect-tattoos
#7
JOURNAL ARTICLE
Valeti Meghana, Hima Gopinath, Kaliaperumal Karthikeyan
No abstract text is available yet for this article.
2020: Indian Journal of Dermatology, Venereology and Leprology
https://read.qxmd.com/read/30553687/selective-referral-using-ccta-versus-direct-referral-for-individuals-referred-to%C3%A2-invasive-coronary-angiography-for%C3%A2-suspected-cad-a-randomized-controlled-open-label-trial
#8
MULTICENTER STUDY
Hyuk-Jae Chang, Fay Y Lin, Dan Gebow, Hae Young An, Daniele Andreini, Ravi Bathina, Andrea Baggiano, Virginia Beltrama, Rodrigo Cerci, Eui-Young Choi, Jung-Hyun Choi, So-Yeon Choi, Namsik Chung, Jason Cole, Joon-Hyung Doh, Sang-Jin Ha, Ae-Young Her, Cezary Kepka, Jang-Young Kim, Jin-Won Kim, Sang-Wook Kim, Woong Kim, Gianluca Pontone, Uma Valeti, Todd C Villines, Yao Lu, Amit Kumar, Iksung Cho, Ibrahim Danad, Donghee Han, Ran Heo, Sang-Eun Lee, Ji Hyun Lee, Hyung-Bok Park, Ji-Min Sung, David Leflang, Joseph Zullo, Leslee J Shaw, James K Min
OBJECTIVES: This study compared the safety and diagnostic yield of a selective referral strategy using coronary computed tomographic angiography (CCTA) compared with a direct referral strategy using invasive coronary angiography (ICA) as the index procedure. BACKGROUND: Among patients presenting with signs and symptoms suggestive of coronary artery disease (CAD), a sizeable proportion who are referred to ICA do not have a significant, obstructive stenosis. METHODS: In a multinational, randomized clinical trial of patients referred to ICA for nonemergent indications, a selective referral strategy was compared with a direct referral strategy...
July 2019: JACC. Cardiovascular Imaging
https://read.qxmd.com/read/29031284/papulonecrotic-tuberculid
#9
JOURNAL ARTICLE
Valeti Meghana, Gowtham Saravanan, Kaliaperumal Karthikeyan
No abstract text is available yet for this article.
October 2017: American Journal of Tropical Medicine and Hygiene
https://read.qxmd.com/read/28932073/a-lagging-lock-hair-cycle-abnormalities-in-follicular-vitiligo
#10
JOURNAL ARTICLE
Hima Gopinath, Kaliaperumal Karthikeyan, Meghana Valeti
No abstract text is available yet for this article.
July 2017: International Journal of Trichology
https://read.qxmd.com/read/28187739/the-global-cardiovascular-magnetic-resonance-registry-gcmr-of-the-society-for-cardiovascular-magnetic-resonance-scmr-its-goals-rationale-data-infrastructure-and-current-developments
#11
MULTICENTER STUDY
Raymond Y Kwong, Steffen E Petersen, Jeanette Schulz-Menger, Andrew E Arai, Scott E Bingham, Yucheng Chen, Yuna L Choi, Ricardo C Cury, Vanessa M Ferreira, Scott D Flamm, Kevin Steel, W Patricia Bandettini, Edward T Martin, Leelakrishna Nallamshetty, Stefan Neubauer, Subha V Raman, Erik B Schelbert, Uma S Valeti, Jie Jane Cao, Nathaniel Reichek, Alistair A Young, Lyuba Fexon, Misha Pivovarov, Victor A Ferrari, Orlando P Simonetti
BACKGROUND: With multifaceted imaging capabilities, cardiovascular magnetic resonance (CMR) is playing a progressively increasing role in the management of various cardiac conditions. A global registry that harmonizes data from international centers, with participation policies that aim to be open and inclusive of all CMR programs, can support future evidence-based growth in CMR. METHODS: The Global CMR Registry (GCMR) was established in 2013 under the auspices of the Society for Cardiovascular Magnetic Resonance (SCMR)...
January 20, 2017: Journal of Cardiovascular Magnetic Resonance
https://read.qxmd.com/read/26787435/primary-pulmonary-artery-sarcoma-masquerading-as-pulmonary-embolism-role-of-cardiac-mri
#12
JOURNAL ARTICLE
Prabhjot Singh Nijjar, Fahad M Iqbal, M Chadi Alraies, Uma S Valeti, S Murthy Tadavarthy
No abstract text is available yet for this article.
May 7, 2016: European Heart Journal
https://read.qxmd.com/read/26683218/myocardial-fibrosis-quantified-by-extracellular-volume-is-associated-with-subsequent-hospitalization-for-heart-failure-death-or-both-across-the-spectrum-of-ejection-fraction-and-heart-failure-stage
#13
JOURNAL ARTICLE
Erik B Schelbert, Kayla M Piehler, Karolina M Zareba, James C Moon, Martin Ugander, Daniel R Messroghli, Uma S Valeti, Chung-Chou H Chang, Sanjeev G Shroff, Javier Diez, Christopher A Miller, Matthias Schmitt, Peter Kellman, Javed Butler, Mihai Gheorghiade, Timothy C Wong
BACKGROUND: Myocardial fibrosis (MF) in noninfarcted myocardium may be an interstitial disease pathway that confers vulnerability to hospitalization for heart failure, death, or both across the spectrum of heart failure and ejection fraction. Hospitalization for heart failure is an epidemic that is difficult to predict and prevent and requires potential therapeutic targets associated with outcomes. METHOD AND RESULTS: We quantified MF with cardiovascular magnetic resonance extracellular volume fraction (ECV) measures in 1172 consecutive patients without amyloidosis or hypertrophic or stress cardiomyopathy and assessed associations with outcomes using Cox regression...
December 18, 2015: Journal of the American Heart Association
https://read.qxmd.com/read/26267924/improvement-in-left-ventricular-function-despite-no-change-in-t2-with-iron-chelation-in-secondary-hemochromatosis
#14
JOURNAL ARTICLE
Prabhjot Singh Nijjar, Haree Vongooru, Ashenafi Tamene, Uma Valeti, Carolina Masri
No abstract text is available yet for this article.
July 2015: Minnesota Medicine
https://read.qxmd.com/read/26065187/stenting-a-moving-target-neurological-and-hemodynamic-recovery-after-80-minutes-of-cpr-using-an-automated-chest-compression-device-to-facilitate-percutaneous-coronary-intervention
#15
JOURNAL ARTICLE
Forum Kamdar, Vijay Pera, Uma Valeti
Despite significant advances in the science of resuscitation, survival to discharge after an in-hospital cardiac arrest in the catheterization laboratory remains poor. Clinicians face the challenges of performing CPR during procedures to address the cause of the arrest and the limitations of prolonged manual CPR. In this article we describe the first case of a patient presenting in cardiogenic shock caused by acute coronary syndrome secondary to bypass graft failure who developed cardiac arrest and survived 80 minutes of resuscitation in the catheterization lab, allowing for revascularization of a vein graft...
May 2015: Minnesota Medicine
https://read.qxmd.com/read/25593536/benefits-and-limitations-of-multimodality-imaging-in-the-diagnosis-of-a-primary-cardiac-lymphoma
#16
JOURNAL ARTICLE
Prabhjot Singh Nijjar, Sofia Carolina Masri, Ashenafi Tamene, Helina Kassahun, Kenneth Liao, Uma Valeti
Primary cardiac tumors are far rarer than tumors metastatic to the heart. Angiosarcoma is the primary cardiac neoplasm most frequently detected; lymphomas constitute only 1% of primary cardiac tumors. We present the case of a 55-year-old woman with a recently diagnosed intracardiac mass who was referred to our institution for consideration of urgent orthotopic heart transplantation. Initial images suggested an angiosarcoma; however, a biopsy specimen of the mass was diagnostic for diffuse large B-cell lymphoma...
December 2014: Texas Heart Institute Journal
https://read.qxmd.com/read/24939069/ct-dose-reduction-using-prospectively-triggered-or-fast-pitch-spiral-technique-employed-in-cardiothoracic-imaging-the-ct-dose-study
#17
MULTICENTER STUDY
Kavitha M Chinnaiyan, Abhay N Bilolikar, Edward Walsh, Daniel Wood, Ann DePetris, Ralph Gentry, Judith Boura, Suhny Abbara, Mouaz Al-Mallah, Kostaki Bis, Gilbert Boswell, Michael Gallagher, Ing-Orn Arunakul, Sandra Halliburton, Jill Jacobs, John Lesser, U Joseph Schoepf, Uma S Valeti, Gilbert L Raff
OBJECTIVES: To establish current radiation dose levels with contemporary scanners capable of prospectively triggered or high-pitch spiral scan modes to previous generation scanners among patients evaluated for coronary artery disease, pulmonary embolism, aortic disease, and "triple rule out" in a large population of patients at multiple centers. BACKGROUND: Previous small-scale studies with carefully controlled scan protocols report that CT scanners that facilitate prospectively triggered scanning and provide high-pitch spiral CT scan modes drastically lower radiation doses...
2014: Journal of Cardiovascular Computed Tomography
https://read.qxmd.com/read/24249712/myocardial-damage-detected-by-late-gadolinium-enhancement-cardiovascular-magnetic-resonance-is-associated-with-subsequent-hospitalization-for-heart-failure
#18
JOURNAL ARTICLE
Timothy C Wong, Kayla M Piehler, Karolina M Zareba, Kathie Lin, Ashley Phrampus, Agam Patel, James C Moon, Martin Ugander, Uma Valeti, Jonathan E Holtz, Bo Fu, Chung-Chou H Chang, Michael Mathier, Peter Kellman, Javed Butler, Mihai Gheorghiade, Erik B Schelbert
BACKGROUND: Hospitalization for heart failure (HHF) is among the most important problems confronting medicine. Late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) robustly identifies intrinsic myocardial damage. LGE may indicate inherent vulnerability to HHF, regardless of etiology, across the spectrum of heart failure stage or left ventricular ejection fraction (LVEF). METHODS AND RESULTS: We enrolled 1068 consecutive patients referred for CMR where 448 (42%) exhibited LGE...
November 18, 2013: Journal of the American Heart Association
https://read.qxmd.com/read/21939822/the-ct-stat-coronary-computed-tomographic-angiography-for-systematic-triage-of-acute-chest-pain-patients-to-treatment-trial
#19
RANDOMIZED CONTROLLED TRIAL
James A Goldstein, Kavitha M Chinnaiyan, Aiden Abidov, Stephan Achenbach, Daniel S Berman, Sean W Hayes, Udo Hoffmann, John R Lesser, Issam A Mikati, Brian J O'Neil, Leslee J Shaw, Michael Y H Shen, Uma S Valeti, Gilbert L Raff
OBJECTIVES: The purpose of this study was to compare the efficiency, cost, and safety of a diagnostic strategy employing early coronary computed tomographic angiography (CCTA) to a strategy employing rest-stress myocardial perfusion imaging (MPI) in the evaluation of acute low-risk chest pain. BACKGROUND: In the United States, >8 million patients require emergency department evaluation for acute chest pain annually at an estimated diagnostic cost of >$10 billion...
September 27, 2011: Journal of the American College of Cardiology
https://read.qxmd.com/read/21398199/guideline-for-minimizing-radiation-exposure-during-acquisition-of-coronary-artery-calcium-scans-with-the-use-of-multidetector-computed-tomography-a-report-by-the-society-for-atherosclerosis-imaging-and-prevention-tomographic-imaging-and-prevention-councils
#20
JOURNAL ARTICLE
Szilard Voros, Juan J Rivera, Daniel S Berman, Ron Blankstein, Matthew J Budoff, Ricardo C Cury, Milind Y Desai, Damini Dey, Sandra S Halliburton, Harvey S Hecht, Khurram Nasir, Raul D Santos, Michael D Shapiro, Allen J Taylor, Uma S Valeti, Phillip M Young, Gaby Weissman
Coronary artery calcium (CAC) scanning is an important tool for risk stratification in intermediate-risk, asymptomatic subjects without previous coronary disease. However, the clinical benefit of improved risk prediction needs to be balanced against the risk of the use of ionizing radiation. Although there is increasing emphasis on the need to obtain CAC scans at low-radiation exposure to the patient, very few practical documents exist to aid laboratories and health care professionals on how to obtain such low-radiation scans...
2011: Journal of Cardiovascular Computed Tomography
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