TY - GEN
T1 - Bandwidth of the ultrasound Doppler signal with applications in blood/tissue segmentation in the left ventricle
AU - Hovda, Sigve
AU - Rue, Håvard
AU - Olstad, Bjørn
PY - 2008
Y1 - 2008
N2 - A new estimator, Bandwidth Imaging, related to the bandwidth of the ultrasound Doppler signal is proposed as a classification function of blood and tissue signal in transthoracial echocardiography of the left ventricle. An in vivo experiment is presented, where the apparent error rate of Bandwidth Imaging is compared with the apparent error rate of Second-Harmonic Imaging on 15 healthy men. The apparent error rates are calculated from the 16 myocardial wall segments defined in [1]. A hypothesis test of Bandwidth Imaging having lower apparent error rate than Second-Harmonic Imaging is proved for a p-value of 0.94 in 3 segments in end diastole and in 1 segment in end systole. When data was averaged by a structural element of 5 radial, 3 lateral and 4 temporal samples the numbers of segments increased to 9 in end diastole and to 6 in end systole. This experiment indicates that Bandwidth Imaging can supply additional information for automatic border detection routines on endocardium.
AB - A new estimator, Bandwidth Imaging, related to the bandwidth of the ultrasound Doppler signal is proposed as a classification function of blood and tissue signal in transthoracial echocardiography of the left ventricle. An in vivo experiment is presented, where the apparent error rate of Bandwidth Imaging is compared with the apparent error rate of Second-Harmonic Imaging on 15 healthy men. The apparent error rates are calculated from the 16 myocardial wall segments defined in [1]. A hypothesis test of Bandwidth Imaging having lower apparent error rate than Second-Harmonic Imaging is proved for a p-value of 0.94 in 3 segments in end diastole and in 1 segment in end systole. When data was averaged by a structural element of 5 radial, 3 lateral and 4 temporal samples the numbers of segments increased to 9 in end diastole and to 6 in end systole. This experiment indicates that Bandwidth Imaging can supply additional information for automatic border detection routines on endocardium.
UR - http://www.scopus.com/inward/record.url?scp=45849153891&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-79490-5_29
DO - 10.1007/978-3-540-79490-5_29
M3 - Conference contribution
AN - SCOPUS:45849153891
SN - 3540794891
SN - 9783540794899
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 233
EP - 242
BT - Medical Imaging and Informatics - 2nd International Conference, MIMI 2007, Revised Selected Papers
T2 - 2nd International Conference on Medical Imaging and Informatics, MIMI 2007
Y2 - 14 August 2007 through 16 August 2007
ER -