Document Detail


Proper orthogonal decomposition analysis of spatio-temporal behavior of renal scintigraphies.
MedLine Citation:
PMID:  19695916     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We present a preliminary application of proper orthogonal decomposition (POD) to data sets coming from spatial and temporal evolution of renal scintigraphy. Renal functionalities or pathologies are hardly recognized from the raw scintigraphic images and their identifications could depend on the subjective point of view of the operator. The proposed technique is able to distinguish independent events starting from a more complex phenomenon. The spatio-temporal fields, representing the radiation emitted by the radiopharmaceutical technetium-99m with mercaptoacetiltriglicin (MAG3) within the kidney, have been analyzed for six randomly selected patients. In particular our study was performed on four patients affected by renal pathologies while two scintigraphies refer to healthy patients. First of all POD represents an efficient filtering procedure to cut off noise from the raw images by only selecting the few most energetic modes. When healthy kidneys are analyzed, POD is able to separate the main processes taking place in the organ. When applied to pathological samples, POD underlines the regions of the organ interested by the troubles allowing to analyze them independently. This analysis can be complementary to the identification made by hand by the operator.
Authors:
P Veltri; A Vecchio; V Carbone
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Publication Detail:
Type:  Case Reports; Journal Article     Date:  2009-08-19
Journal Detail:
Title:  Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)     Volume:  26     ISSN:  1724-191X     ISO Abbreviation:  Phys Med     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-03-23     Completed Date:  2010-06-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9302888     Medline TA:  Phys Med     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  57-70     Citation Subset:  IM    
Copyright Information:
Copyright 2009 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Consorzio RFX/CNR, Corso Stati Uniti 4, 35727 Padova, Italy.
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Humans
Image Processing, Computer-Assisted / methods*
Kidney / radionuclide imaging*
Kidney Diseases / radionuclide imaging*
Radionuclide Imaging / methods*
Technetium Tc 99m Mertiatide / diagnostic use
Time Factors
Chemical
Reg. No./Substance:
125224-05-7/Technetium Tc 99m Mertiatide

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


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