Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Standard

Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound. / Jansson, Tomas; Hernandez-Andrade, Edgar; Lingman, Göran; Malcus, Peter; Ley, David; Marsal, Karel.

Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics. Int. Federation for Medical and Biological Eng, 2005. p. 125-126.

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Harvard

Jansson, T, Hernandez-Andrade, E, Lingman, G, Malcus, P, Ley, D & Marsal, K 2005, Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound. in Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics. Int. Federation for Medical and Biological Eng, pp. 125-126, Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics, Umea, Sweden, 2005/06/13.

APA

Jansson, T., Hernandez-Andrade, E., Lingman, G., Malcus, P., Ley, D., & Marsal, K. (2005). Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound. In Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics (pp. 125-126). Int. Federation for Medical and Biological Eng.

CBE

Jansson T, Hernandez-Andrade E, Lingman G, Malcus P, Ley D, Marsal K. 2005. Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound. In Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics. Int. Federation for Medical and Biological Eng. pp. 125-126.

MLA

Jansson, Tomas et al. "Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound". Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics. Int. Federation for Medical and Biological Eng. 2005, 125-126.

Vancouver

Jansson T, Hernandez-Andrade E, Lingman G, Malcus P, Ley D, Marsal K. Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound. In Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics. Int. Federation for Medical and Biological Eng. 2005. p. 125-126

Author

Jansson, Tomas ; Hernandez-Andrade, Edgar ; Lingman, Göran ; Malcus, Peter ; Ley, David ; Marsal, Karel. / Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound. Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics. Int. Federation for Medical and Biological Eng, 2005. pp. 125-126

RIS

TY - GEN

T1 - Investigation of the fetal heart circulation in an animal model using contrast enhanced ultrasound

AU - Jansson, Tomas

AU - Hernandez-Andrade, Edgar

AU - Lingman, Göran

AU - Malcus, Peter

AU - Ley, David

AU - Marsal, Karel

PY - 2005

Y1 - 2005

N2 - To assess the distribution of blood from the umbilical vein (UMV), inferior vena cava (IVC) and superior vena cava (SVC) to either side of the fetal lamb heart by using ultrasound enhanced contrast agent imaging. By injection of ultrasound contrast agents (UCA) in UMV, IVC or SVC, the blood from these vessels was tracked, as it then was highly echogenic. By evaluating the image intensity within the heart ventricles, the relative concentrations of blood could be determined. The study was performed in 19 near term fetal lambs of mixed breed, with a mean gestational age of 136 days (range 134-136). Ultrasound contrast agent was injected at a constant rate of 1 ml/min, to ensure that a constant level of contrast agent would be obtained in both sides of the heart. Results: the median percentages of blood distributed to the left ventricle when injecting contrast in UMV, IVC, and SVC, was 68%, 67%, and 21% respectively. These numbers compare well with previously published data, except the recorded percentage distributed from the IVC. This could be a methodological error as well as a result of the mild hypoxia, or an actual increased capacity of the left ventricle at this gestational age

AB - To assess the distribution of blood from the umbilical vein (UMV), inferior vena cava (IVC) and superior vena cava (SVC) to either side of the fetal lamb heart by using ultrasound enhanced contrast agent imaging. By injection of ultrasound contrast agents (UCA) in UMV, IVC or SVC, the blood from these vessels was tracked, as it then was highly echogenic. By evaluating the image intensity within the heart ventricles, the relative concentrations of blood could be determined. The study was performed in 19 near term fetal lambs of mixed breed, with a mean gestational age of 136 days (range 134-136). Ultrasound contrast agent was injected at a constant rate of 1 ml/min, to ensure that a constant level of contrast agent would be obtained in both sides of the heart. Results: the median percentages of blood distributed to the left ventricle when injecting contrast in UMV, IVC, and SVC, was 68%, 67%, and 21% respectively. These numbers compare well with previously published data, except the recorded percentage distributed from the IVC. This could be a methodological error as well as a result of the mild hypoxia, or an actual increased capacity of the left ventricle at this gestational age

KW - image intensity

KW - blood vessel

KW - ultrasound contrast agent

KW - fetal lamb heart

KW - superior vena cava

KW - inferior vena cava

KW - umbilical vein

KW - blood distribution

KW - contrast enhanced ultrasound

KW - fetal heart circulation investigation

KW - animal model

KW - heart ventricle

KW - blood concentration

KW - gestation

KW - hypoxia

M3 - Paper in conference proceeding

SN - 91-7305-910-2

SP - 125

EP - 126

BT - Proceedings of the International Federation for Medical & Biomedical Engineering. 13th Nordic Baltic Conference on Biomedical Engineering and Medical Physics

PB - Int. Federation for Medical and Biological Eng

ER -