Special Section on Optical Methods of Imaging in the Skin

Visualization of peripheral vasodilative indices in human skin by use of red, green, blue images

[+] Author Affiliations
Izumi Nishidate, Noriyuki Tanaka, Tatsuya Kawase

Tokyo University of Agriculture and Technology, Graduate School of Bio-application and Systems Engineering, Koganei, Tokyo 184-8588, Japan

Takaaki Maeda

Kushiro National College of Technology, Department of Mechanical Engineering, Kushiro, Hokkaido 084-0916, Japan

Tomonori Yuasa, Yoshihisa Aizu

Muroran Institute of Technology, College of Design and Manufacturing Technology, Muroran, Hokkaido 050-8588, Japan

Tetsuya Yuasa, Kyuichi Niizeki

Yamagata University, Graduate School of Biosystem Engineering, Yonezawa, Yamagata 992-8510, Japan

J. Biomed. Opt. 18(6), 061220 (Dec 17, 2012). doi:10.1117/1.JBO.18.6.061220
History: Received September 5, 2012; Revised November 18, 2012; Accepted November 19, 2012
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Abstract.  We propose a method to visualize the arterial inflow, the vascular resistance, and the venous capacitance in the skin tissue from red, green, blue (RGB) digital color images. The arterial inflow and the venous capacitance in the skin tissue are visualized based on an increase in the rate of change in the total blood concentration and the change of the total blood concentration during upper limb occlusion at a pressure of 50 mmHg. The resultant arterial inflow with the measured mean arterial pressure also provides an image of the vascular resistance in human skin. The arterial inflow, the vascular resistance, and the venous capacitance acquired by the method are well correlated with those obtained from the conventional strain-gauge plethysmograph. The correlation coefficients R between the estimated values by the method and the measurements by the SPG are calculated to be 0.83 (P<0.001) for the arterial inflow, 0.77 (P<0.01) for the vascular resistance, and 0.77 (P<0.01) for the venous capacitance. The arterial inflow and the venous capacitance in the skin tissue are significantly higher in active subjects compared with the sedentary subjects, whereas the vascular resistance was significantly lower in the active subjects compared with the sedentary subjects. The results of the present study indicate the possibility of using the proposed method for evaluating the peripheral vascular functions in human skin.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Izumi Nishidate ; Noriyuki Tanaka ; Tatsuya Kawase ; Takaaki Maeda ; Tomonori Yuasa, et al.
"Visualization of peripheral vasodilative indices in human skin by use of red, green, blue images", J. Biomed. Opt. 18(6), 061220 (Dec 17, 2012). ; http://dx.doi.org/10.1117/1.JBO.18.6.061220


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