| Filter-based synthetic transmit and receive focusing. | |
| | |
MedLine Citation:
|
PMID: 11775775 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Most diagnostic ultrasonic imaging systems perform fixed focusing on transmit and dynamic focusing on receive. Such systems suffer from image quality degradation at depths away from the transmit focal zone. Several dynamic transmit focusing techniques have been previously investigated. Among them, a filter-based, retrospective focusing technique was proposed to increase the length of the transmit focal zone. In this paper, the filter-based technique is extended from dynamic receive focusing to fixed receive focusing. It is shown that the filtering technique with fixed receive focusing can achieve an image quality similar to that of dynamic receive focusing with filtering. The performance of the proposed approach is verified using real ultrasound data. It is shown that the proposed approach with fixed receive focusing requires a longer filter than that with dynamic receive focusing. Nonetheless, system complexity is greatly reduced with synthetic transmit and receive focusing because the dynamic receive focusing circuit is no longer needed. |
| | |
Authors:
|
M L Li; P C Li |
Related Documents
:
|
18285165 - Further results on map optimality and strong consistency of certain classes of morpholo... 9579055 - Developments in generalized ranked-order filters. 20720815 - Design and performance of a programmable spatial ccd filter. 17405445 - A new family of nonredundant transforms using hybrid wavelets and directional filter ba... 19952995 - The prevalence estimates of macular telangiectasia type 2: the melbourne collaborative ... 17520955 - Variation in proportion indices and angles between selected facial landmarks with rotat... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Ultrasonic imaging Volume: 23 ISSN: 0161-7346 ISO Abbreviation: Ultrason Imaging Publication Date: 2001 Apr |
Date Detail:
|
Created Date: 2002-01-01 Completed Date: 2002-03-06 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 7909167 Medline TA: Ultrason Imaging Country: United States |
Other Details:
|
Languages: eng Pagination: 73-89 Citation Subset: IM |
Affiliation:
|
Department of Electrical Engineering, National Taiwan University, Tapei, ROC. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Algorithms Artifacts Humans Phantoms, Imaging Retrospective Studies Ultrasonography / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Scanning electric conductivity gradients with ultrasonically-induced Lorentz force.
Next Document: Feasibility study of time-intensity-based blood flow measurements using deconvolution.