Fourier-phase imaging can be used to objectively analyze myocardial contrast echocardiograms

Author

Bekerdjian, R. ; Filusch, A. ; Hilbel, T. ; Reiter, M. ; Foster, E. ; Botvinick, E. ; Schiller, NB ; Cahalan, M. ; Merrick, S. ; Balea, M. ; Russell, I. ; Kuecherer, H.

Author_Institution

Heidelberg Univ., Germany

fYear

2000

fDate

2000

Firstpage

193

Lastpage

196

Abstract

To objectively display myocardial opacification following intravenous injection of ultrasound contrast agents, we applied a first harmonic Fourier transformation to precordial harmonic Power-Doppler images in 21 patients undergoing Tl-201-SPECT, in 13 control subjects, and to epicardial second harmonic B-mode images in 10 patients undergoing CABG. Temporal and spatial distribution of myocardial intensities were analyzed. Marked temporal delays (phase shift 106±90°), and low intensities (30±20) were found in 13/14 perfusion defects. Epicardial imaging showed higher intensity increases in septal (Δ 40±22) than in posterolateral segments (Δ 20±10, p<0.005) but regional phase angles were not different (Δ 47±11°, n.s.), indicating homogenous resting perfusion. Thus, Fourier analysis can be applied to Power-Doppler- and epicardial harmonic B-mode images to display myocardial opacification in a simple objective format

Keywords

Doppler measurement; Fourier analysis; echocardiography; medical image processing; muscle; 13 control subjects; CABG; Fourier analysis; Fourier-phase imaging; Tl; Tl-201-SPECT; epicardial harmonic B-mode images; epicardial imaging; epicardial second harmonic B-mode images; first harmonic Fourier transformation; homogenous resting perfusion; intravenous injection; low intensities; marked temporal delays; myocardial contrast echocardiograms; myocardial intensities; myocardial opacification; patients; perfusion defects; posterolateral segments; precordial harmonic Power-Doppler images; regional phase angles; septal segments; simple objective format; spatial distribution; temporal distribution; ultrasound contrast agents; Acoustic imaging; Acoustic signal detection; Computer displays; Frequency; Harmonic analysis; Image analysis; Motion analysis; Myocardium; Power system harmonics; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 2000

Conference_Location

Cambridge, MA

ISSN

0276-6547

Print_ISBN

0-7803-6557-7

Type

conf

DOI

10.1109/CIC.2000.898489

Filename

898489