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Your search keyword '"Levine, Steven R."' showing total 23 results
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23 results on '"Levine, Steven R."'

2. Computerized cognitive performance assessments in the Brooklyn Cognitive Impairments in Health Disparities Pilot Study

Author

Adler, Kerry, primary, Apple, Samuel, additional, Friedlander, Alison, additional, Cheng, Frank, additional, Cohen, Carl, additional, Levine, Steven R., additional, Lucchesi, Michael, additional, Maruff, Paul, additional, Reinhardt, Michael, additional, Salmieri, Margaret, additional, Stevens, David, additional, Weingast, Sarah, additional, and Gustafson, Deborah, additional

Published
2019
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4. National Stroke Association guidelines for the management of transient ischemic attacks

Author

Johnston, S. Claiborne, primary, Nguyen-Huynh, Mai N., additional, Schwarz, Miriam E., additional, Fuller, Kate, additional, Williams, Christina E., additional, Josephson, S. Andrew, additional, Hankey, Graeme J., additional, Hart, Robert G., additional, Levine, Steven R., additional, Biller, Jose, additional, Brown, Robert D., additional, Sacco, Ralph L., additional, Kappelle, L. Jaap, additional, Koudstaal, Peter J., additional, Bogousslavsky, Julien, additional, Caplan, Louis R., additional, van Gijn, Jan, additional, Algra, Ale, additional, Rothwell, Peter M., additional, Adams, Harold P., additional, and Albers, Gregory W., additional

Published
2006
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14. Letters to the editor

Author

Tsubahara, Akio, primary, Chino, Naoich, additional, Mineo, Kiyorhi, additional, Laban, Myron M., additional, Albers, James W., additional, Donofrio, Peter D., additional, Levine, Steven R., additional, McGonagle, Timothy K., additional, Yontagna, P., additional, Lugaresi, E., additional, Cirignotta, F., additional, Coccanay, G., additional, and Kamphuisen, H. A. C., additional

Published
1990
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17. Low Brain Magnesium in Migraine

Author

Ramadan, N.M., primary, Halvorson, H., additional, Vande-Linde, A., additional, Levine, Steven R., additional, Helpern, J.A., additional, and Welch, K.M.A., additional

Published
1989
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22. A New Transcranial Doppler Scoring System for Evaluating Middle Cerebral Artery Stenosis.

Author

Hao Q, Feldmann E, Balucani C, Zubizarreta N, Zhong X, and Levine SR

Subjects
Aged, Algorithms, Angiography, Digital Subtraction, Blood Flow Velocity physiology, Constriction, Pathologic diagnostic imaging, Female, Humans, Male, Middle Aged, Severity of Illness Index, Intracranial Arteriosclerosis diagnostic imaging, Middle Cerebral Artery diagnostic imaging, Ultrasonography, Doppler, Transcranial methods
Abstract

Background and Purpose: Transcranial Doppler (TCD) criteria for cerebrovascular stenosis are only based on velocity with unsatisfactory positive predictive value (PPV) in previous studies. We refined a published scoring system that integrates several characteristics of TCD data in diagnosing middle cerebral artery (MCA) stenosis., Methods: Using the TCD-digital subtraction angiography (DSA) database from Stroke Outcomes and Neuroimaging of Intracranial Atherosclerosis (SONIA) trial, velocity, spectrum pattern, diffuse ratio, and asymmetry ratio were assessed. The cutpoints were defined for each parameter and a point value was assigned to each category within that parameter. A summed score was calculated for each MCA. The accuracy was assessed for different cutpoints in predicting ≥50% MCA stenosis measured by DSA. Logistic regression and C-statistics were used for analysis., Results: A total of 114 MCAs were included in vessel-based and 87 patients were included in patient-based analysis. Compared to the velocity-only cutpoints in SONIA, the score results in much improved PPV while negative predictive value (NPV) remains unchanged. The score based on mean velocity (score 0: <140 cm/s, score 3: ≥140 cm/s), spectrum pattern (score 0: no turbulence; score 1: mild turbulence; 2: significant turbulence), and asymmetry ratio (score 0: ratio <1.5, score 1: ratio 1.5-2; score 2: ratio ≥2.1) has the highest NPV while PPV remains favorable (PPV: 72% [95% CI 54-90%]; NPV: 84% [95% CI: 75-93%], area under curve [AUC]: .76 [95% CI: .66-.86])., Conclusions: The multiparameter scoring system incorporating several characteristics of TCD measures yielded higher PPV while maintaining high NPV compared with the single-parameter velocity criteria in diagnosing MCA ≥50% stenosis., (© 2019 by the American Society of Neuroimaging.)

Published
2020
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23. A web-based interactive database system for a transcranial Doppler ultrasound laboratory.

Author

Gorman MJ, Jacobs B, Sloan M, Roth Y, and Levine SR

Subjects
Computer Security, Humans, User-Computer Interface, Cerebrovascular Disorders diagnostic imaging, Databases as Topic, Internet, Ultrasonography, Doppler, Transcranial methods
Abstract

Background: Variations in transcranial Doppler (TCD) examination performance techniques and interpretive paradigms between individual laboratories are a common challenge in the practice of TCD. Demand for rapid access to patient ultrasound examination data and report for use in intensive care settings has necessitated a more flexible approach to data management. Both of these issues may benefit from a computerized approach., Methods: We describe the application of a World Wide Web-based database system for use in an ultrasound laboratory. Results. Databasing information while generating a TCD report is efficient. Web accessibility allows rapid and flexible communication of time-sensitive report information and interpretation for more expeditious clinical decision making., Conclusions: Web-based applications can extend the reach and efficiency of traditionally structured medical laboratories.

Published
2006
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