Document Detail


Precision of laser Doppler scanning in clinical use.
MedLine Citation:
PMID:  8593712     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Reactions of the cutaneous microcirculation to local stimuli have been quantitated in terms of area of erythema (planimetry), change in colour (colorimetry) and time-dependent changes in perfusion (one-dimensional laser Doppler fluxmetry (LDF)). Using the new technique of laser Doppler scanning (LDS) it is now possible to quantify and demonstrate two-dimensional patterns of microvascular perfusion in terms of intensity and extent. The precision of this new technique was compared with the previously established techniques by examining the reactions of 15 healthy volunteers to the intracutaneous injection of carbacholin and isotonic NaCl solutions. Both stimuli were applied paravertebrally, on the left and right side. Reactions were examined after 10 min. As a control for temporal reproducibility the examination was repeated on another day. All methods allowed the differentiation of reactions to carbacholin from those to NaCl (P < or = 0.0001). Only colorimetry and LDS provided data that were unequivocally reproducible when comparing both sides (r > or = 0.78). Using LDF or planimetry, reproducibility of values was lower (r < or = 0.58). When looking at measurements performed on different days, only values of LDS were reproducible (r > or = 0.77). Hyperaemic areas seen with LDS were significantly larger than those determined by planimetry. Results of LDS are reproducible spatially and temporally: the technique will allow time-course observations of skin reactions that are accompanied by medium-term changes in perfusion.
Authors:
M Stücker; A Heese; K Hoffmann; A Röchling; P Altmeyer
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical and experimental dermatology     Volume:  20     ISSN:  0307-6938     ISO Abbreviation:  Clin. Exp. Dermatol.     Publication Date:  1995 Sep 
Date Detail:
Created Date:  1996-04-08     Completed Date:  1996-04-08     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7606847     Medline TA:  Clin Exp Dermatol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  371-6     Citation Subset:  IM    
Affiliation:
Dermatological Clinic of the Ruhr-University Bochum, Germany.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Humans
Laser-Doppler Flowmetry / methods*
Microcirculation
Middle Aged
Reproducibility of Results
Skin / blood supply*

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