Title :
Myocardial elastography: assessment of contractile function in children with congenital heart disease
Author :
de Korte, C.L. ; Baas, E. ; Kapusta, L. ; Daniels, O. ; Thijssen, J.M.
Author_Institution :
Clinical Phys. Lab., UMC, Nijmegen, Netherlands
Abstract :
In children with congenital heart disease, strain imaging might help in choosing the time-point for intervention. We evaluated three time delay estimation methods that use a-priori information on the cross-correlation function. The autocorrelation function and a parametric function using the Gaussian shape of the autocorrelation function were tested using phantom and patient acquisitions. These experiments revealed a performance similar to conventional peak detection of the cross-correlation function in phantoms and a decreased performance for in vivo data. Furthermore, it is possible to estimate the strain in vivo in the myocardium of patients and normals using an rf-based strain imaging approach.
Keywords :
cardiology; delay estimation; diseases; echocardiography; muscle; patient diagnosis; phantoms; Gaussian shape; autocorrelation function; child medicine; congenital heart disease; contractile function; cross correlation function; myocardial elastography; parametric function; patient acquisitions; patient myocardium; phantom acquisitions; rf based strain imaging; strain imaging; time delay estimation methods; Autocorrelation; Capacitive sensors; Cardiac disease; Delay effects; Delay estimation; Imaging phantoms; In vivo; Myocardium; Pediatrics; Shape;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293370
