TY - GEN
T1 - Assessment of cardiac apex kinematics using a real-time 3D magnetic tracking system
AU - Marcelli, E.
AU - Spolzino, S.
AU - Cercenelli, L.
AU - Cappello, A.
AU - Bagnoli, P.
AU - Costantino, M. L.
AU - Malagutti, N.
AU - Fumero, R.
AU - Plicchi, G.
PY - 2008
Y1 - 2008
N2 - The assessment of Left Ventricular Apex (LVA) kinematics throughout the cardiac cycle could be useful for evaluating cardiac performance and efficiency. We proposed and evaluated in a sheep the use of a real-time 3D magnetic tracking system for the analysis of LVA kinematics. LVA kinematics was assessed using a realtime 3D magnetic tracking system, whose sensor was epicardially glued on the exposed LVA. Two indexes were calculated from the 3-Dimensional apex path traced by the magnetic sensor: the 3D Apex Path Length (3DAPL, length of 3D apex path) and the 3D Apex Path Volume (3DAPV, volume containing 3D apex path). Hemodynamic index of cardiac contractility (LVdP/dtMAX) was derived from Left Ventricular Pressure (LVP) measurement and evaluated against LVA kinematics parameters, at baseline and after acute ischemia, experimentally induced by coronary ligation. Results showed an opposite trend between LV hemodynamics and LVA kinematics: in the ischemic heart an increase of both 3DAPL (+24.5%) and 3DAPV (+151.7%) occurred compared with baseline, while LVdP/dtMAX decreased (-36.9%).
AB - The assessment of Left Ventricular Apex (LVA) kinematics throughout the cardiac cycle could be useful for evaluating cardiac performance and efficiency. We proposed and evaluated in a sheep the use of a real-time 3D magnetic tracking system for the analysis of LVA kinematics. LVA kinematics was assessed using a realtime 3D magnetic tracking system, whose sensor was epicardially glued on the exposed LVA. Two indexes were calculated from the 3-Dimensional apex path traced by the magnetic sensor: the 3D Apex Path Length (3DAPL, length of 3D apex path) and the 3D Apex Path Volume (3DAPV, volume containing 3D apex path). Hemodynamic index of cardiac contractility (LVdP/dtMAX) was derived from Left Ventricular Pressure (LVP) measurement and evaluated against LVA kinematics parameters, at baseline and after acute ischemia, experimentally induced by coronary ligation. Results showed an opposite trend between LV hemodynamics and LVA kinematics: in the ischemic heart an increase of both 3DAPL (+24.5%) and 3DAPV (+151.7%) occurred compared with baseline, while LVdP/dtMAX decreased (-36.9%).
UR - http://www.scopus.com/inward/record.url?scp=62249154011&partnerID=8YFLogxK
U2 - 10.1109/CIC.2008.4749062
DO - 10.1109/CIC.2008.4749062
M3 - Conference contribution
AN - SCOPUS:62249154011
SN - 1424437067
SN - 9781424437061
T3 - Computers in Cardiology
SP - 397
EP - 400
BT - Computers in Cardiology 2008, CAR
T2 - Computers in Cardiology 2008, CAR
Y2 - 14 September 2008 through 17 September 2008
ER -