Intraoperative vector flow imaging of the heart
Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
Standard
Intraoperative vector flow imaging of the heart. / Hansen, Kristoffer Lindskov; Moller-Sorensen, Hasse; Pedersen, Mads Moller; Kjaergaard, Jesper; Nilsson, Jens Christian; Lund, Jens Teglgaard; Nielsen, Michael Bachmann; Jensen, Jorgen Arendt.
2013 IEEE International Ultrasonics Symposium, IUS 2013. 2013. s. 1745-1748 6725113 (IEEE International Ultrasonics Symposium, IUS).Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - GEN
T1 - Intraoperative vector flow imaging of the heart
AU - Hansen, Kristoffer Lindskov
AU - Moller-Sorensen, Hasse
AU - Pedersen, Mads Moller
AU - Kjaergaard, Jesper
AU - Nilsson, Jens Christian
AU - Lund, Jens Teglgaard
AU - Nielsen, Michael Bachmann
AU - Jensen, Jorgen Arendt
PY - 2013
Y1 - 2013
N2 - The cardiac flow is complex and multidirectional, and difficult to measure with conventional Doppler ultrasound (US) methods due to the one-dimensional and angle-dependent velocity estimation. The vector velocity method Transverse Oscillation (TO) has been proposed as a solution to this. TO is implemented on a conventional US scanner (Pro Focus 2202 UltraView, BK Medical) using a linear transducer (8670, BK Medical) and can provide real-time, angle-independent vector velocity estimates of the cardiac blood flow. During cardiac surgery, epicardiac US examinations using TO were performed on three patients. Antegrade central jet and retrograde flow near the vessel wall in the ascending aorta and the pulmonary artery were seen during systole, while stable vortices were seen in the aortic sinuses and complex flow patterns were seen around the valves during diastole. In the right atrium, a stable vortex was seen during the entire heart cycle. For comparison, simultaneous measurements were obtained with conventional spectral Doppler (SD) and intravenous catheter thermodilution technique (TD). Peak systolic velocities were underestimated by 18% compared to SD and cardiac output was underestimated by 16% compared to TD. This is the first time TO measurements have been obtained of cardiac flow. TO can potentially reveal new information of cardiovascular physiology and blood flow dynamics, and become a valuable tool in cardiology.
AB - The cardiac flow is complex and multidirectional, and difficult to measure with conventional Doppler ultrasound (US) methods due to the one-dimensional and angle-dependent velocity estimation. The vector velocity method Transverse Oscillation (TO) has been proposed as a solution to this. TO is implemented on a conventional US scanner (Pro Focus 2202 UltraView, BK Medical) using a linear transducer (8670, BK Medical) and can provide real-time, angle-independent vector velocity estimates of the cardiac blood flow. During cardiac surgery, epicardiac US examinations using TO were performed on three patients. Antegrade central jet and retrograde flow near the vessel wall in the ascending aorta and the pulmonary artery were seen during systole, while stable vortices were seen in the aortic sinuses and complex flow patterns were seen around the valves during diastole. In the right atrium, a stable vortex was seen during the entire heart cycle. For comparison, simultaneous measurements were obtained with conventional spectral Doppler (SD) and intravenous catheter thermodilution technique (TD). Peak systolic velocities were underestimated by 18% compared to SD and cardiac output was underestimated by 16% compared to TD. This is the first time TO measurements have been obtained of cardiac flow. TO can potentially reveal new information of cardiovascular physiology and blood flow dynamics, and become a valuable tool in cardiology.
KW - Blood flow
KW - Cardiology
KW - Intraoperative ultrasound
KW - Transverse Oscillation
KW - Vector velocity estimation
UR - http://www.scopus.com/inward/record.url?scp=84894375094&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2013.0445
DO - 10.1109/ULTSYM.2013.0445
M3 - Article in proceedings
AN - SCOPUS:84894375094
SN - 9781467356862
T3 - IEEE International Ultrasonics Symposium, IUS
SP - 1745
EP - 1748
BT - 2013 IEEE International Ultrasonics Symposium, IUS 2013
T2 - 2013 IEEE International Ultrasonics Symposium, IUS 2013
Y2 - 21 July 2013 through 25 July 2013
ER -
ID: 331501826