Title :
Enhanced detection of contrast regions in echocardiograms by adaptive quantization
Author :
Steinmetz, E. ; Brennecke, R. ; Ge, J. ; Erbel, R. ; Meyer, J.
Author_Institution :
Med. Clinic, Johannes Gutenberg Univ., Mainz, Germany
Abstract :
The statistics of ultrasound echo images are governed by Rayleigh statistics. The authors derive some experimentally verifiable predictions of this theory, compare them with experimental results obtained from echocardiographic images, and derive a new color coding scheme, (adaptive quantization) that is adapted to the signal-dependent noise predicted by theory. This results in some technical advantages and in an improved discrimination of regions of the echo image that are enhanced by echo contrast material
Keywords :
acoustic imaging; biomedical ultrasonics; cardiology; Rayleigh statistics; adaptive quantization; color coding scheme; contrast regions; echo contrast material; echocardiograms; enhanced detection; image region discrimination; image statistics; signal-dependent noise; ultrasound echo images; Biomedical imaging; Colored noise; Echo interference; Medical diagnostic imaging; Quantization; Signal to noise ratio; Statistical analysis; Statistical distributions; Statistics; Ultrasonic imaging;
Conference_Titel :
Computers in Cardiology 1991, Proceedings.
Conference_Location :
Venice
Print_ISBN :
0-8186-2485-X
DOI :
10.1109/CIC.1991.169100
