New Technology Poster Session
The aim of this study is to objectify the effect of physical and chemical substances on the appearance of the stratum corneum of the finger pads.
Materials and Methods
The 50 MHz ultrasound imaging unit consists of an applicator with the transducer, a transient recorder, a control unit and a computer.
To account for the short depth of the focal area of the 100 MHz transducer a suitable imaging conception, the B/D(Brightness/Depth)-Scan concept is used.
Water is used as coupling medium.
The study population consisted of 26 persons (20 men, 6 women).
The evaluation of the sonograms was made by image analysis methods.
A comparison of the reference values and test values obtained in the 26 subjects revealed great interindividual differences allowing to subdivide the total population into 4 groups, which differ in the thickness of stratum corneum (below 100 Ám; 100-200 Ám; 200-300 Ám; above 300 Ám).
In the figures 1-4 the upper sonogram (10 mm x 1.6 mm) presents the fingerpad before treatment and
The echogenicity of the skin entry echo was:
The stratum corneum thickness was:
The skin entry echo was interrupted after sanding (Figure 3). Clinical inspection revealed that the papillary body was opened.
It is remarkable, that the dissolution of the water soluble glue could be observed (Figure 4).
Discussion and Conclusion
Our results show that, when standard settings are used, it is possible to objectively assess the effect of different physical and chemical agents acting on the horny layer using sonograms.
On the one hand these agents influence the sonographic appearence of the skin.
On the other hand it is possible to take advantage of these influences by pretreatment of skin conditions prior to sonography.
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|Kaspar, K.; el Gammal, S.; Altmeyer, P.; Vogt, M.; Ermert, H.; (1998). Investigation Of Physical, Chemical And Cosmetological Phenomena Exerting An Impact On The Horny Layer With 50 MHz Sonography. Presented at INABIS '98 - 5th Internet World Congress on Biomedical Sciences at McMaster University, Canada, Dec 7-16th. Available at URL http://www.mcmaster.ca/inabis98/newtech/kaspar0549/index.html|
|© 1998 Author(s) Hold Copyright|