The Experts below are selected from a list of 113985 Experts worldwide ranked by ideXlab platform
Jan Baan - One of the best experts on this subject based on the ideXlab platform.
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Online quantitative aortographic Assessment of aortic regurgitation after tavr results of the oval study
Jacc-cardiovascular Interventions, 2021Co-Authors: Rodrigo Modolo, Martijn S. Van Mourik, Abdelhak El Bouziani, Hideyuki Kawashima, Liesbeth Rosseel, Mohammad Abdelghani, Jean-paul Aben, Tristan Slots, Cherif Sahyoun, Jan BaanAbstract:Abstract Objectives The aim of this study was to investigate the Online Assessment feasibility of aortography using videodensitometry in the catheterization laboratory during transcatheter aortic v...
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Online Quantitative Aortographic Assessment of Aortic Regurgitation After TAVR: Results of the OVAL Study.
JACC. Cardiovascular interventions, 2021Co-Authors: Rodrigo Modolo, Martijn S. Van Mourik, Abdelhak El Bouziani, Hideyuki Kawashima, Liesbeth Rosseel, Mohammad Abdelghani, Jean-paul Aben, Tristan Slots, Cherif Sahyoun, Jan BaanAbstract:Abstract Objectives The aim of this study was to investigate the Online Assessment feasibility of aortography using videodensitometry in the catheterization laboratory during transcatheter aortic valve replacement (TAVR). Background Quantitative Assessment of regurgitation after TAVR through aortography using videodensitometry is simple, reproducible, and validated in vitro, in vivo, in clinical trials, and in “real-world” patients. However, thus far the Assessment has been done offline. Methods This was a single center, prospective, proof-of-principle, feasibility study. One hundred consecutive patients with aortic stenosis and indications to undergo TAVR were enrolled. All final aortograms were analyzed immediately after acquisition in the catheterization laboratory and were also sent to an independent core laboratory for blinded offline Assessment. The primary endpoint of the study was the feasibility of the Online Assessment of regurgitation (percentage of analyzable cases). The secondary endpoint was the reproducibility of results between the Online Assessment and the offline analysis by the core laboratory. Results Patients’ mean age was 81 ± 7 years, and 56% were men. The implanted valves were either SAPIEN 3 (97%) or SAPIEN 3 Ultra (3%). The primary endpoint of Online feasibility of analysis was 92% (95% confidence interval [CI]: 86% to 97%) which was the same feasibility encountered by the core laboratory (92%; 95% CI: 86% to 97%). Reproducibility Assessment showed a high correlation between Online and core laboratory evaluations (R2 = 0.87, p Conclusions This study showed high feasibility of Online quantitative Assessment of regurgitation and high agreement between the Online examiner and core laboratory. These results may pave the way for the application of videodensitometry in the catheterization laboratory after TAVR. (Online Videodensitometric Assessment of Aortic Regurgitation in the Cath-Lab [OVAL]; NCT04047082 )
Rodrigo Modolo - One of the best experts on this subject based on the ideXlab platform.
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Online quantitative aortographic Assessment of aortic regurgitation after tavr results of the oval study
Jacc-cardiovascular Interventions, 2021Co-Authors: Rodrigo Modolo, Martijn S. Van Mourik, Abdelhak El Bouziani, Hideyuki Kawashima, Liesbeth Rosseel, Mohammad Abdelghani, Jean-paul Aben, Tristan Slots, Cherif Sahyoun, Jan BaanAbstract:Abstract Objectives The aim of this study was to investigate the Online Assessment feasibility of aortography using videodensitometry in the catheterization laboratory during transcatheter aortic v...
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Online Quantitative Aortographic Assessment of Aortic Regurgitation After TAVR: Results of the OVAL Study.
JACC. Cardiovascular interventions, 2021Co-Authors: Rodrigo Modolo, Martijn S. Van Mourik, Abdelhak El Bouziani, Hideyuki Kawashima, Liesbeth Rosseel, Mohammad Abdelghani, Jean-paul Aben, Tristan Slots, Cherif Sahyoun, Jan BaanAbstract:Abstract Objectives The aim of this study was to investigate the Online Assessment feasibility of aortography using videodensitometry in the catheterization laboratory during transcatheter aortic valve replacement (TAVR). Background Quantitative Assessment of regurgitation after TAVR through aortography using videodensitometry is simple, reproducible, and validated in vitro, in vivo, in clinical trials, and in “real-world” patients. However, thus far the Assessment has been done offline. Methods This was a single center, prospective, proof-of-principle, feasibility study. One hundred consecutive patients with aortic stenosis and indications to undergo TAVR were enrolled. All final aortograms were analyzed immediately after acquisition in the catheterization laboratory and were also sent to an independent core laboratory for blinded offline Assessment. The primary endpoint of the study was the feasibility of the Online Assessment of regurgitation (percentage of analyzable cases). The secondary endpoint was the reproducibility of results between the Online Assessment and the offline analysis by the core laboratory. Results Patients’ mean age was 81 ± 7 years, and 56% were men. The implanted valves were either SAPIEN 3 (97%) or SAPIEN 3 Ultra (3%). The primary endpoint of Online feasibility of analysis was 92% (95% confidence interval [CI]: 86% to 97%) which was the same feasibility encountered by the core laboratory (92%; 95% CI: 86% to 97%). Reproducibility Assessment showed a high correlation between Online and core laboratory evaluations (R2 = 0.87, p Conclusions This study showed high feasibility of Online quantitative Assessment of regurgitation and high agreement between the Online examiner and core laboratory. These results may pave the way for the application of videodensitometry in the catheterization laboratory after TAVR. (Online Videodensitometric Assessment of Aortic Regurgitation in the Cath-Lab [OVAL]; NCT04047082 )
Donghua Zhou - One of the best experts on this subject based on the ideXlab platform.
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Online probabilistic operational safety Assessment of multi mode engineering systems using bayesian methods
Reliability Engineering & System Safety, 2013Co-Authors: Yufei Lin, Maoyin Chen, Donghua ZhouAbstract:In the past decades, engineering systems become more and more complex, and generally work at different operational modes. Since incipient fault can lead to dangerous accidents, it is crucial to develop strategies for Online operational safety Assessment. However, the existing Online Assessment methods for multi-mode engineering systems commonly assume that samples are independent, which do not hold for practical cases. This paper proposes a probabilistic framework of Online operational safety Assessment of multi-mode engineering systems with sample dependency. To begin with, a Gaussian mixture model (GMM) is used to characterize multiple operating modes. Then, based on the definition of safety index (SI), the SI for one single mode is calculated. At last, the Bayesian method is presented to calculate the posterior probabilities belonging to each operating mode with sample dependency. The proposed Assessment strategy is applied in two examples: one is the aircraft gas turbine, another is an industrial dryer. Both examples illustrate the efficiency of the proposed method.
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Online probabilistic Assessment of operating safety for multi mode engineering systems based on bayesian methods
Chinese Control and Decision Conference, 2013Co-Authors: Yufei Lin, Maoyin Chen, Donghua ZhouAbstract:Operating safety has become more and more important in today's engineering systems, since the systems become more and more complex. And it is crucial to develop strategies for Online operating safety Assessment. Although there have been some studies and researches on operating safety Assessment, Online Assessment has not yet been paid sufficient attention, especially for multi-mode engineering systems. This paper proposes a probabilistic framework of Online operating safety Assessment for multi-mode engineering systems. First, a Gaussian mixture model (GMM) is used to characterize multiple operating modes. Then, based on a kind of definition of safety index (SI), the SI for one single mode is calculated. A Bayesian method is then presented to calculate the posterior probabilities belonging to each operating mode with consideration of sample dependency.
Klint Kanopka - One of the best experts on this subject based on the ideXlab platform.
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rapid Online Assessment of reading ability
Scientific Reports, 2021Co-Authors: Jason D Yeatman, Kenny Tang, Patrick M Donnelly, Maya Yablonski, Mahalakshmi Ramamurthy, Iliana I Karipidis, Sendy Caffarra, Megumi E Takada, Klint KanopkaAbstract:An accurate model of the factors that contribute to individual differences in reading ability depends on data collection in large, diverse and representative samples of research participants. However, that is rarely feasible due to the constraints imposed by standardized measures of reading ability which require test administration by trained clinicians or researchers. Here we explore whether a simple, two-alternative forced choice, time limited lexical decision task (LDT), self-delivered through the web-browser, can serve as an accurate and reliable measure of reading ability. We found that performance on the LDT is highly correlated with scores on standardized measures of reading ability such as the Woodcock-Johnson Letter Word Identification test (r = 0.91, disattenuated r = 0.94). Importantly, the LDT reading ability measure is highly reliable (r = 0.97). After optimizing the list of words and pseudowords based on item response theory, we found that a short experiment with 76 trials (2-3 min) provides a reliable (r = 0.95) measure of reading ability. Thus, the self-administered, Rapid Online Assessment of Reading ability (ROAR) developed here overcomes the constraints of resource-intensive, in-person reading Assessment, and provides an efficient and automated tool for effective Online research into the mechanisms of reading (dis)ability.
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rapid Online Assessment of reading ability
bioRxiv, 2021Co-Authors: Jason D Yeatman, Kenny Tang, Patrick M Donnelly, Maya Yablonski, Mahalakshmi Ramamurthy, Iliana I Karipidis, Sendy Caffarra, Megumi E Takada, Klint KanopkaAbstract:An accurate model of the factors that contribute to individual differences in reading ability depends on data collection in large, diverse and representative samples of research participants. However, that is rarely feasible due to the constraints imposed by standardized measures of reading ability which require test administration by trained clinicians or researchers. Here we explore whether a simple, two-alternative forced choice, time limited lexical decision task (LDT), self-delivered through the web-browser, can serve as an accurate and reliable measure of reading ability. We found that performance on the LDT is highly correlated with scores on standardized measures of reading ability such as the Woodcock-Johnson Letter Word Identification test (r = 0.91, disattenuated r = 0.94). Importantly, the LDT reading ability measure is highly reliable (r = 0.97). After optimizing the list of words and pseudowords based on item response theory, we found that a short experiment with 76 trials (2-3 minutes) provides a reliable (r = 0.95) measure of reading ability. Thus, the self-administered, Rapid Online Assessment of Reading ability (ROAR) developed here overcomes the constraints of resource-intensive, in-person reading Assessment, and provides an efficient and automated tool for effective Online research into the mechanisms of reading (dis)ability.
Hideyuki Kawashima - One of the best experts on this subject based on the ideXlab platform.
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Online quantitative aortographic Assessment of aortic regurgitation after tavr results of the oval study
Jacc-cardiovascular Interventions, 2021Co-Authors: Rodrigo Modolo, Martijn S. Van Mourik, Abdelhak El Bouziani, Hideyuki Kawashima, Liesbeth Rosseel, Mohammad Abdelghani, Jean-paul Aben, Tristan Slots, Cherif Sahyoun, Jan BaanAbstract:Abstract Objectives The aim of this study was to investigate the Online Assessment feasibility of aortography using videodensitometry in the catheterization laboratory during transcatheter aortic v...
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Online Quantitative Aortographic Assessment of Aortic Regurgitation After TAVR: Results of the OVAL Study.
JACC. Cardiovascular interventions, 2021Co-Authors: Rodrigo Modolo, Martijn S. Van Mourik, Abdelhak El Bouziani, Hideyuki Kawashima, Liesbeth Rosseel, Mohammad Abdelghani, Jean-paul Aben, Tristan Slots, Cherif Sahyoun, Jan BaanAbstract:Abstract Objectives The aim of this study was to investigate the Online Assessment feasibility of aortography using videodensitometry in the catheterization laboratory during transcatheter aortic valve replacement (TAVR). Background Quantitative Assessment of regurgitation after TAVR through aortography using videodensitometry is simple, reproducible, and validated in vitro, in vivo, in clinical trials, and in “real-world” patients. However, thus far the Assessment has been done offline. Methods This was a single center, prospective, proof-of-principle, feasibility study. One hundred consecutive patients with aortic stenosis and indications to undergo TAVR were enrolled. All final aortograms were analyzed immediately after acquisition in the catheterization laboratory and were also sent to an independent core laboratory for blinded offline Assessment. The primary endpoint of the study was the feasibility of the Online Assessment of regurgitation (percentage of analyzable cases). The secondary endpoint was the reproducibility of results between the Online Assessment and the offline analysis by the core laboratory. Results Patients’ mean age was 81 ± 7 years, and 56% were men. The implanted valves were either SAPIEN 3 (97%) or SAPIEN 3 Ultra (3%). The primary endpoint of Online feasibility of analysis was 92% (95% confidence interval [CI]: 86% to 97%) which was the same feasibility encountered by the core laboratory (92%; 95% CI: 86% to 97%). Reproducibility Assessment showed a high correlation between Online and core laboratory evaluations (R2 = 0.87, p Conclusions This study showed high feasibility of Online quantitative Assessment of regurgitation and high agreement between the Online examiner and core laboratory. These results may pave the way for the application of videodensitometry in the catheterization laboratory after TAVR. (Online Videodensitometric Assessment of Aortic Regurgitation in the Cath-Lab [OVAL]; NCT04047082 )
