Title :
Forward modelling of ultrasound fields using a novel directivity spectrum method
Author :
Leeman, S. ; Healey, A.J.
Author_Institution :
Dept. of Med. Eng. & Phys., Kings Coll. Hosp., London, UK
Abstract :
A new technique for computing images of transient ultrasound fields is presented. The theory of the method is based on the “directivity spectrum”, which is a generalisation of the angular spectrum. The method, in contrast to the angular spectrum approach, is particularly suited to the computation of transient fields, and it contains no evanescent waves. It allows computed pulse propagation over extended ranges
Keywords :
ultrasonic imaging; angular spectrum generalisation; apodisation; computed pulse propagation; computing technique; directivity spectrum method; extended range; forward modelling; transient ultrasound field images;
Conference_Titel :
New Applications in Modelling and Inversion Techniques for Non-Destructive Testing (Ref. No. 1999/020), IEE Colloquium on
Conference_Location :
London
DOI :
10.1049/ic:19990109
