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Suitability of using far-infrared imaging system for noncontact evaluation on working state of implantable medical devices
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10.1063/1.3093868
/content/aip/journal/jap/105/6/10.1063/1.3093868
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/6/10.1063/1.3093868

Figures

Image of FIG. 1.
FIG. 1.

(a) Sketch about the 3D cubic calculation domain with a size of , (b) steady-state temperature distribution at the skin surface embedded with single IMD, (c) steady-state temperature distribution at the skin surface embedded with two IMDs, and (d) steady-state temperature distribution at the skin surface embedded with three IMDs.

Image of FIG. 2.
FIG. 2.

(a) Sketch of three-layer human body tissues with a size of and (b) sketch about calculation domain embedded with IMD.

Image of FIG. 3.
FIG. 3.

Temperature distribution on the skin surface: (a) implantation depth of 0.02 m and (b) implantation depth of 0.07 m.

Image of FIG. 4.
FIG. 4.

Temperature distribution on the skin surface: (a) width of IMD 4 mm and (b) width of IMD 64 mm.

Image of FIG. 5.
FIG. 5.

Temperature difference on the skin surface between the central position of IMD and surrounding tissue with different implantation depths.

Image of FIG. 6.
FIG. 6.

Temperature difference on the skin surface between the central position of IMD and surrounding tissue with different thermal conductivities of IMD.

Image of FIG. 7.
FIG. 7.

Temperature distribution on the skin surface: (a) thermal conductivities of IMD and (b) thermal conductivities of IMD .

Image of FIG. 8.
FIG. 8.

Temperature difference on the skin surface between the central position of IMD and surrounding tissue with different heat generation rates of IMD.

Image of FIG. 9.
FIG. 9.

Temperature difference on the skin surface between the central position of IMD and surrounding tissue in different blood perfusion and metabolic heat generation rates.

Image of FIG. 10.
FIG. 10.

(a) Sketch of the calculation setup for the disordered metabolic region and (b) temperature distribution on the skin surface with the disordered metabolic region.

Image of FIG. 11.
FIG. 11.

Temperature difference on the skin surface between the central position of IMD and surrounding tissue. Implantation depth: ; ; and , 283, 288, 293, 298, 303 K, respectively.

Image of FIG. 12.
FIG. 12.

(a) Sketch of the heating aluminum block as an IMD and (b) sketch for in vitro experiment. (1) DC power supply, (2) thermostat water bath, (3) data acquisition system, (4) thermocouple, (5) copper plate, (6) medical far-infrared thermal imaging system, (7) tissue layer of the pork, (8) fat layer of the pork, (9) skin layer of the pork, and (10) the heating aluminum block which simulates the IMD.

Image of FIG. 13.
FIG. 13.

Infrared thermographs on the skin surface of the pork : (a) IMD without electrification and (b) IMD with electrification and the voltage input is 3 V.

Image of FIG. 14.
FIG. 14.

Infrared thermographs on the skin surface of the pork .

Image of FIG. 15.
FIG. 15.

(a) Sketch of the resistor as an IMD and (b) picture of the mouse after implantation and the blue circle indicates the position of the IMD.

Image of FIG. 16.
FIG. 16.

Far-infrared thermographs of the experiment in vivo .

Tables

Generic image for table
Table I.

Temperature difference on the skin surface between the central location of IMD and surrounding tissue with different implantation depths in the theoretical analysis.

Generic image for table
Table II.

Temperature difference on the skin surface between the central position of IMD and surrounding tissue with different implantation depths in the numerical simulation.

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/content/aip/journal/jap/105/6/10.1063/1.3093868
2009-03-25
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Suitability of using far-infrared imaging system for noncontact evaluation on working state of implantable medical devices
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/6/10.1063/1.3093868
10.1063/1.3093868
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