Document Detail


Thermoacoustic tomography--consistency conditions and the partial scan problem.
MedLine Citation:
PMID:  15248579     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Hybrid imaging techniques using either radiofrequency (RF) or near-infrared radiation (NIR) as excitation energy measure averages of tissue RF/NIR absorptivity over spheres centred at ultrasound (US) transducer locations on the bottom of a spherical bowl, where [z < 0]. Inversion formulae for the 'complete data' case where transducers measure all over the bowl weight data from the lower hemisphere more heavily for reconstructions points also satisfying (z < 0]. We derive consistency conditions for the data and use them to compute the unmeasured data corresponding to transducer locations on the top of the bowl. This process is clearly unstable, but somewhat tempered by the reconstruction's l/r weighting.
Authors:
S K Patch
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Publication Detail:
Type:  Comparative Study; Evaluation Studies; Journal Article    
Journal Detail:
Title:  Physics in medicine and biology     Volume:  49     ISSN:  0031-9155     ISO Abbreviation:  Phys Med Biol     Publication Date:  2004 Jun 
Date Detail:
Created Date:  2004-07-13     Completed Date:  2004-12-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401220     Medline TA:  Phys Med Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  2305-15     Citation Subset:  IM    
Affiliation:
Applied Science Lab, GE Medical Systems, PO Box 414, Milwaukee, WI 53201, USA. sarah.patch@med.ge.com
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MeSH Terms
Descriptor/Qualifier:
Algorithms*
Artifacts*
Image Enhancement / methods
Image Interpretation, Computer-Assisted / methods*
Imaging, Three-Dimensional / methods*
Information Storage and Retrieval / methods
Numerical Analysis, Computer-Assisted
Reproducibility of Results
Sensitivity and Specificity
Signal Processing, Computer-Assisted
Thermography / methods*
Tomography / methods*
Ultrasonography / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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