The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Corinne Balleyguier - One of the best experts on this subject based on the ideXlab platform.
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Five simultaneous artificial intelligence data challenges on ultrasound, CT, and MRI
Diagnostic and Interventional Imaging, 2019Co-Authors: Nathalie Lassau, T. Estienne, P. De Vomecourt, J. Cagnol, E. Jehanno, M. Majer, R. Renard-penna, Michel Azoulay, G. Garcia, Corinne BalleyguierAbstract:Purpose The goal of this data challenge was to create a structured dynamic with the following objectives: (1) teach radiologists the new rules of General Data Protection Regulation (GDPR), while building a large multicentric prospective database of ultrasound, computed tomography (CT) and MRI patient images; (2) build a network including radiologists, researchers, start-ups, large companies, and students from engineering schools, and; (3) provide all French stakeholders working together during 5 data challenges with a secured framework, offering a realistic picture of the benefits and concerns in October 2018. Materials and methods Relevant clinical questions were chosen by the Société Francaise de Radiologie. The challenge was designed to respect all French ethical and data protection constraints. Multidisciplinary teams with at least one radiologist, one engineering student, and a company and/or research lab were gathered using different networks, and clinical databases were created accordingly. Results Five challenges were launched: detection of meniscal tears on MRI, segmentation of renal cortex on CT, detection and characterization of liver lesions on ultrasound, detection of breast lesions on MRI, and characterization of thyroid cartilage lesions on CT. A total of 5,170 images within 4 months were provided for the challenge by 46 radiology services. Twenty-six multidisciplinary teams with 181 contestants worked for one month on the challenges. Three challenges, meniscal tears, renal cortex, and liver lesions, resulted in an accuracy > 90%. The fourth challenge (breast) reached 82% and the lastone (thyroid) 70%. Conclusion Theses five challenges were able to gather a large community of radiologists, engineers, researchers, and companies in a very short period of time. The accurate results of three of the five modalities suggest that artificial intelligence is a promising tool in these radiology modalities.
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Five simultaneous artificial intelligence data challenges on ultrasound, CT, and MRI
Diagnostic and interventional imaging, 2019Co-Authors: Nathalie Lassau, T. Estienne, P. De Vomecourt, J. Cagnol, E. Jehanno, M. Majer, R. Renard-penna, Michel Azoulay, G. Garcia, Corinne BalleyguierAbstract:Summary Purpose The goal of this data challenge was to create a structured dynamic with the following objectives: (1) teach radiologists the new rules of General Data Protection Regulation (GDPR), while building a large multicentric prospective database of ultrasound, computed tomography (CT) and MRI patient images; (2) build a network including radiologists, researchers, start-ups, large companies, and students from engineering schools, and; (3) provide all French stakeholders working together during 5 data challenges with a secured framework, offering a realistic picture of the benefits and concerns in October 2018. Materials and methods Relevant clinical questions were chosen by the Societe Francaise de Radiologie. The challenge was designed to respect all French ethical and data protection constraints. Multidisciplinary teams with at least one radiologist, one engineering student, and a company and/or research lab were gathered using different networks, and clinical databases were created accordingly. Results Five challenges were launched: detection of meniscal tears on MRI, segmentation of renal cortex on CT, detection and characterization of liver lesions on ultrasound, detection of breast lesions on MRI, and characterization of thyroid cartilage lesions on CT. A total of 5,170 images within 4 months were provided for the challenge by 46 radiology services. Twenty-six multidisciplinary teams with 181 contestants worked for one month on the challenges. Three challenges, meniscal tears, renal cortex, and liver lesions, resulted in an accuracy > 90%. The fourth challenge (breast) reached 82% and the lastone (thyroid) 70%. Conclusion Theses five challenges were able to gather a large community of radiologists, engineers, researchers, and companies in a very short period of time. The accurate results of three of the five modalities suggest that artificial intelligence is a promising tool in these radiology modalities.
K. Fehlings - One of the best experts on this subject based on the ideXlab platform.
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investigations of milk quality from Teats with milk flow disorders
Journal of Dairy Science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, K. Fehlings, Rupert M. BruckmaierAbstract:The objective of this study was to investigate the quality of milk from Teats with milk flow disorders. Somatic cell count, pathogens, and signs of mastitis (>100,000 cells/ml and pathogens detected) were determined in the milk from all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all of the other Teats from the same udder. Before treatment, the SCC from affected Teats was 4.3 million higher, the odds of detecting pathogens 6 times higher, and the odds of mastitis 11 times higher than in control Teats (when adjusted for other significant explanatory variables). SCC and the risk of mastitis decreased after surgical treatment of the affected Teats, whereas the chance of detecting pathogens was not affected. Six months after treatment, the SCC was 1.3 million higher, and the odds of mastitis 6.5 times higher than in control Teats. Throughout the study period neither SCC, the odds of detecting pathogens, nor mastitis changed significantly in control Teats. It may be concluded from this study that milk quality from Teats with milk flow disorders is decreased before treatment and does not reach the milk quality from unaffected Teats within 6 mo after treatment.
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Investigations on milk flow and milk yield from Teats with milk flow disorders
Journal of dairy science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, Rupert M. Bruckmaier, K. FehlingsAbstract:The objective of this study was to investigate peak milk flow, average milk flow, and milk yield in Teats with milk flow disorders. A total of 100 hard milking Teats were studied in 97 cows. Teats with milk flow disorders were examined endoscopically. Quarter milk flow and quarter milk yield were examined with four Lactocorders attached to a quarter milking machine. Peak milk flow, average milk flow, and milk yield were measured in all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all other Teats of the same udder. Before treatment, peak milk flow from affected Teats was 20%, average milk flow 14%, and milk yield 53% of the control Teats, adjusted for other significant explanatory variables. Milk flow and milk yield increased after surgical treatment of the affected Teats. Six months after treatment peak milk flow was 79%, average milk flow 76%, milk yield was 71% compared with control Teats. We conclude from these findings that teat endoscopy and measuring quarter milk flow and milk yield with Lactocorders are useful tools for examining Teats with milk flow disorders.
Klaus Querengässer - One of the best experts on this subject based on the ideXlab platform.
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investigations of milk quality from Teats with milk flow disorders
Journal of Dairy Science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, K. Fehlings, Rupert M. BruckmaierAbstract:The objective of this study was to investigate the quality of milk from Teats with milk flow disorders. Somatic cell count, pathogens, and signs of mastitis (>100,000 cells/ml and pathogens detected) were determined in the milk from all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all of the other Teats from the same udder. Before treatment, the SCC from affected Teats was 4.3 million higher, the odds of detecting pathogens 6 times higher, and the odds of mastitis 11 times higher than in control Teats (when adjusted for other significant explanatory variables). SCC and the risk of mastitis decreased after surgical treatment of the affected Teats, whereas the chance of detecting pathogens was not affected. Six months after treatment, the SCC was 1.3 million higher, and the odds of mastitis 6.5 times higher than in control Teats. Throughout the study period neither SCC, the odds of detecting pathogens, nor mastitis changed significantly in control Teats. It may be concluded from this study that milk quality from Teats with milk flow disorders is decreased before treatment and does not reach the milk quality from unaffected Teats within 6 mo after treatment.
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Investigations on milk flow and milk yield from Teats with milk flow disorders
Journal of dairy science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, Rupert M. Bruckmaier, K. FehlingsAbstract:The objective of this study was to investigate peak milk flow, average milk flow, and milk yield in Teats with milk flow disorders. A total of 100 hard milking Teats were studied in 97 cows. Teats with milk flow disorders were examined endoscopically. Quarter milk flow and quarter milk yield were examined with four Lactocorders attached to a quarter milking machine. Peak milk flow, average milk flow, and milk yield were measured in all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all other Teats of the same udder. Before treatment, peak milk flow from affected Teats was 20%, average milk flow 14%, and milk yield 53% of the control Teats, adjusted for other significant explanatory variables. Milk flow and milk yield increased after surgical treatment of the affected Teats. Six months after treatment peak milk flow was 79%, average milk flow 76%, milk yield was 71% compared with control Teats. We conclude from these findings that teat endoscopy and measuring quarter milk flow and milk yield with Lactocorders are useful tools for examining Teats with milk flow disorders.
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Investigations on Teat Canal Length in Teats with Milk Flow Disturbances
Journal of dairy science, 2000Co-Authors: T. Geishauser, Klaus QuerengässerAbstract:The objective of this study was to evaluate teat canal length as a test for tissue ruptures in the area of the teat canal in Teats with milk flow disturbances (Medl's test). A total of 133 dairy cows affected with milk flow disturbances in one teat were used for this study. The teat canal length of the affected teat was compared with the teat canal length of the contralateral teat of the same cow. Milk flow disturbances were diagnosed by endoscopy. Diagnoses were categorized as tissue ruptures in the area of the teat canal or other causes such as narrowing of the teat canal, or free foreign bodies in the teat cistern. The median teat canal length was 11 mm in Teats with milk flow disturbances, and 8 mm in contralateral control Teats. When the test criterion was lengthening of the teat canal by ≥2 mm, 79% of the teat canals with tissue ruptures tested positive (true positive), but 47% of teat canals without tissue ruptures also tested positive (false positive). When the test criterion was unchanged teat canal length, 47% of teat canals with tissue ruptures tested positive, and only 7% of teat canals without tissue ruptures tested positive. Thus, it is concluded that Medl's test may be useful in differentiating causes of milk flow disturbances. However, a more accurate diagnosis may be made by teat endoscopy.
T. Geishauser - One of the best experts on this subject based on the ideXlab platform.
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investigations of milk quality from Teats with milk flow disorders
Journal of Dairy Science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, K. Fehlings, Rupert M. BruckmaierAbstract:The objective of this study was to investigate the quality of milk from Teats with milk flow disorders. Somatic cell count, pathogens, and signs of mastitis (>100,000 cells/ml and pathogens detected) were determined in the milk from all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all of the other Teats from the same udder. Before treatment, the SCC from affected Teats was 4.3 million higher, the odds of detecting pathogens 6 times higher, and the odds of mastitis 11 times higher than in control Teats (when adjusted for other significant explanatory variables). SCC and the risk of mastitis decreased after surgical treatment of the affected Teats, whereas the chance of detecting pathogens was not affected. Six months after treatment, the SCC was 1.3 million higher, and the odds of mastitis 6.5 times higher than in control Teats. Throughout the study period neither SCC, the odds of detecting pathogens, nor mastitis changed significantly in control Teats. It may be concluded from this study that milk quality from Teats with milk flow disorders is decreased before treatment and does not reach the milk quality from unaffected Teats within 6 mo after treatment.
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Investigations on milk flow and milk yield from Teats with milk flow disorders
Journal of dairy science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, Rupert M. Bruckmaier, K. FehlingsAbstract:The objective of this study was to investigate peak milk flow, average milk flow, and milk yield in Teats with milk flow disorders. A total of 100 hard milking Teats were studied in 97 cows. Teats with milk flow disorders were examined endoscopically. Quarter milk flow and quarter milk yield were examined with four Lactocorders attached to a quarter milking machine. Peak milk flow, average milk flow, and milk yield were measured in all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all other Teats of the same udder. Before treatment, peak milk flow from affected Teats was 20%, average milk flow 14%, and milk yield 53% of the control Teats, adjusted for other significant explanatory variables. Milk flow and milk yield increased after surgical treatment of the affected Teats. Six months after treatment peak milk flow was 79%, average milk flow 76%, milk yield was 71% compared with control Teats. We conclude from these findings that teat endoscopy and measuring quarter milk flow and milk yield with Lactocorders are useful tools for examining Teats with milk flow disorders.
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Investigations on Teat Canal Length in Teats with Milk Flow Disturbances
Journal of dairy science, 2000Co-Authors: T. Geishauser, Klaus QuerengässerAbstract:The objective of this study was to evaluate teat canal length as a test for tissue ruptures in the area of the teat canal in Teats with milk flow disturbances (Medl's test). A total of 133 dairy cows affected with milk flow disturbances in one teat were used for this study. The teat canal length of the affected teat was compared with the teat canal length of the contralateral teat of the same cow. Milk flow disturbances were diagnosed by endoscopy. Diagnoses were categorized as tissue ruptures in the area of the teat canal or other causes such as narrowing of the teat canal, or free foreign bodies in the teat cistern. The median teat canal length was 11 mm in Teats with milk flow disturbances, and 8 mm in contralateral control Teats. When the test criterion was lengthening of the teat canal by ≥2 mm, 79% of the teat canals with tissue ruptures tested positive (true positive), but 47% of teat canals without tissue ruptures also tested positive (false positive). When the test criterion was unchanged teat canal length, 47% of teat canals with tissue ruptures tested positive, and only 7% of teat canals without tissue ruptures tested positive. Thus, it is concluded that Medl's test may be useful in differentiating causes of milk flow disturbances. However, a more accurate diagnosis may be made by teat endoscopy.
Rupert M. Bruckmaier - One of the best experts on this subject based on the ideXlab platform.
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investigations of milk quality from Teats with milk flow disorders
Journal of Dairy Science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, K. Fehlings, Rupert M. BruckmaierAbstract:The objective of this study was to investigate the quality of milk from Teats with milk flow disorders. Somatic cell count, pathogens, and signs of mastitis (>100,000 cells/ml and pathogens detected) were determined in the milk from all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all of the other Teats from the same udder. Before treatment, the SCC from affected Teats was 4.3 million higher, the odds of detecting pathogens 6 times higher, and the odds of mastitis 11 times higher than in control Teats (when adjusted for other significant explanatory variables). SCC and the risk of mastitis decreased after surgical treatment of the affected Teats, whereas the chance of detecting pathogens was not affected. Six months after treatment, the SCC was 1.3 million higher, and the odds of mastitis 6.5 times higher than in control Teats. Throughout the study period neither SCC, the odds of detecting pathogens, nor mastitis changed significantly in control Teats. It may be concluded from this study that milk quality from Teats with milk flow disorders is decreased before treatment and does not reach the milk quality from unaffected Teats within 6 mo after treatment.
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Investigations on milk flow and milk yield from Teats with milk flow disorders
Journal of dairy science, 2002Co-Authors: Julia Querengässer, T. Geishauser, Klaus Querengässer, Rupert M. Bruckmaier, K. FehlingsAbstract:The objective of this study was to investigate peak milk flow, average milk flow, and milk yield in Teats with milk flow disorders. A total of 100 hard milking Teats were studied in 97 cows. Teats with milk flow disorders were examined endoscopically. Quarter milk flow and quarter milk yield were examined with four Lactocorders attached to a quarter milking machine. Peak milk flow, average milk flow, and milk yield were measured in all Teats of the udder before treatment of the affected teat, as well as 1 and 6 mo later. Teats with milk flow disorders were compared to all other Teats of the same udder. Before treatment, peak milk flow from affected Teats was 20%, average milk flow 14%, and milk yield 53% of the control Teats, adjusted for other significant explanatory variables. Milk flow and milk yield increased after surgical treatment of the affected Teats. Six months after treatment peak milk flow was 79%, average milk flow 76%, milk yield was 71% compared with control Teats. We conclude from these findings that teat endoscopy and measuring quarter milk flow and milk yield with Lactocorders are useful tools for examining Teats with milk flow disorders.
