An optical system for 3-d chest wall measuring during breathing is described. The system is based on a laser multiple-line triangulation technique. It uses a CCD camera and a laser that simultaneously projects thirty-three light planes on the measured surface. The accuracy is ±0.5 mm, the measuring range is 400x600x500 mm and the frequency is 80 Hz. The system efficiency was tested by an adult volunteer, who was breathing in two regimes: rib-cage-dominant and abdomen-dominant. The results show the breathing pattern in a graphical and numerical way.
COBISS.SI-ID: 24626905
In a prospective cohort study of 81 patients with venous leg ulcers we used a recently described laser-based 3D measurement of the ulcers at days 0 and 28 to estimate the predictive power of horizontal (HIHR) and vertical initial healing rates for wound healing. The rates were calculated by the Gilman's equation. The influence of risk factors on both initial healing rates was also studied. The horizontal and vertical initial healing rates are important predictors of healing.
COBISS.SI-ID: 24564953