[Deep and localized hyperthermia of the liver induced by stereotaxic Nd-YAG laser irradiation].

Thirty six hepatic lesions (12-18 mm) of localized hyperthermia are induced in eleven pigs by means of a Nd-YAG laser. Laser shots of 80 W/10 sec. are transmitted through a stereotaxic handpiece coupled to a water cooling circulation protecting the optic fibre.

Deep localized neodymium (Nd)-YAG laser photocoagulation in liver using a new water cooled and echoguided handpiece.

Thirty-six deep hepatic lesions of localized photocoagulation were induced in 11 pigs by means of a neodymium-YAG laser. Laser applications of 80 W/10 sec (10.190 W/cm2) were transmitted through a handpiece coupled to a water-cooling circulation system to protect the quartz fiber and positioned through an echo-guided trocar.

Ultrasonic and histopathological correlations of deep focal hepatic lesions induced by stereotaxic Nd-YAG laser applications.

Thirty six deep focal hepatic lesions were induced in eleven piglets by means of an Nd-YAG laser. Laser shots of 80 W power and 10 s duration were used, the beam being transmitted through an echoguided stereotaxic handpiece. From day 0 to day 120, the animals underwent ultrasonographic and morphological controls.

In vitro survey of low energy laser beam penetration in compact bone.

The laser used in this study (NEURALASE R1) is a light-emitting diode which emits continuous or modulated impulsional signals in the near infra-red (approximately 850 nm). The power emitted varies between 1 and 11 mW. The instrument is placed at a fixed distance from a photovoltaic sensor whose voltage response is a linear function of the received luminous power.

Sensory potentials evoked by stimulation of the Jing points at the hand.

Stimulation of Jing points at the hand, evokes sensory potentials measurable at the arm on the acupuncture points located above the corresponding nerve courses. Seven normal subjects were studied. The better electrical permeability on the Chinese point is confirmed.