BACKGROUND The 940-nm diode laser has been shown to be an effective treatment for leg veins. OBJECTIVE We sought to evaluate the effectiveness of the 940-nm diode laser on leg veins, depending on the size and morphologic aspect of the treated vessels. METHODS A total of 60 patients (mean age: 44.4 years, Fitzpatrick skin types I-IV) underwent up to 3 treatment sessions at 4-week intervals u...

Most methods for measuring light-tissue interaction focus on volume reflectance, while very few measure light transmission. In a previous work, we suggested investigating the influence of blood vessel diameter on photons exiting the tissue at all exit angles to receive the full scattering profile. By this method, we have shown that there is a central angle, i.e., the isobaric point, independent...

The purpose of these studies was to measure changes in the diameter of arterioles as large-artery pressure was varied. Changes in diameter were measured with a flying spot microscope in blood vessels of the mesentery of anesthetized cats. Arterial pressure was reduced in a single step and held at a constant level until the change in the diameter was complete. In experiments on 34 arterioles, 10...

After successful stent implantation, the residual luminal diameter of the stented vessel is usually smaller than the maximal stent-expanded balloon diameter. The goal of this study was to determine whether immediate vessel diameter recoil after Palmaz-Schatz stenting is affected by the final expanding balloon diameter used during stent deployment. Single Palmaz-Schatz balloon expandable stents ...

AIMS To determine principles which regulate the occurrence of angioscotomata in automated static perimetry, variations in light sensitivity were correlated with the location and diameter of neighbouring retinal vessels. METHODS Ten normal eyes were tested with the Octopus 2000R, using a 0.431 degree light stimulus. Sensitivity was quantified in points located around the blind spot, according ...