Title :
Modelling and restoration of Gaussian beam B-mode images
Author :
Fatemi, M. ; Ahanessians, R.
Author_Institution :
Iran. Res. Org., Tehran, Iran
Abstract :
An image formation model for B-mode linear-scan imaging systems using a generally noncircular Gaussian transducer is presented. Using this model, computationally efficient expressions for the point response of the system are derived. As an application of the model, a resolution enhancement scheme, based on the piecewise shift-invariant Wiener filtering technique is proposed. Simulations indicate significant resolution improvement in both axial and lateral directions.<>
Keywords :
acoustic imaging; biomedical ultrasonics; modelling; B-mode linear-scan imaging systems; Gaussian beam B-mode images; axial direction; computationally efficient expressions; diagnostic images; generally noncircular Gaussian transducer; image formation model; image modelling; image restoration; lateral direction; medical US images; piecewise shift-invariant Wiener filtering technique; point response; resolution enhancement scheme; Bandwidth; Biomedical imaging; Biomedical transducers; Computational modeling; Image restoration; Medical simulation; Medical tests; Nondestructive testing; Ultrasonic imaging; Wiener filter;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.259313
