Table 1.
Conditions for thermography images will consider the variations experienced in a clinical environment.
Fig 1.
Study protocol includes two cooling interventions – once for each test camera.
Fig 2.
Example of knees stacked posture for data collection.
Fig 3.
Regions of interest for the cooling protocol shown on (A) thermal and (B) optical images after alignment.
The cooling ROI (large ellipse) is positioned over the posterior superior iliac spine (PSIS); the control ROI (small ellipse) is located superior to the PSIS.
Table 2.
Participant characteristics.
Table 3.
Temperature responses during baseline and cooling in both regions of interest.
Fig 4.
There was a significant impact of cooling and camera on the absolute temperature in the ROI (Left), whereas the temperature difference between the ROI and Control Region showed camera-dependent variation only in the cooling condition (Right).
Fig 5.
Measured temperature difference between the ROI and control region at baseline (yellow) and after cooling (blue) varies according to melanin index.
Linear regression lines show the relationships between melanin index and temperature differences for each condition, with 95% confidence intervals indicated by gray shaded regions.