Sinvent As

Nisonic As

Tomod Selbekk

Sintef Tto As

Tormod Selbekk

Geirmund Unsgård

Kristine Holbo

Llewellyn Padayachy

Reidar Brekken

Graham Fieggen

Llewelly Padayachy

Erik Smistad

Geirmund Unsgard

The invention relates to a new method, as well as diagnosis. A non-invasive marker, systems and equipment are also included.

Method for detecting pulsatile dynamics of the optic nerve sheath, diagnostic methods, medical uses, non-invasive markers, systems and transducer devices

A method of measuring a property of a medium using ultrasound, comprising: transmitting one or more ultrasound pulses into the medium from one or more transmitters and receiving at least a first echo signal and a second echo signal from within the medium at one or more receivers, wherein the first and second echo signals correspond to first and second pulse transmission paths within the medium from the one or more sources to the one or more receivers, the second path being different from the first path; and using the characteristics of the first and second echo signals together with an estimate of the property of the medium and a geometrical relationship between the first and second transmission paths to calculate a revised estimate of said property of the medium. By using two different beam paths within the medium, the first and second echoes will have had slightly different interactions with the medium. For example the different paths may well have different lengths thus giving different amounts of interaction such as different amplitude or phase effects on the different pulses. By comparing the similarities and differences between the pulses, certain properties of the medium can be discerned. Many different properties can be investigated using these principles. In particular, the speed of sound in a medium can be measured and the direction and magnitude of a flow or particle movement within the medium can be measured. An iterative process may be used.

Methods and systems for measuring properties with ultrasound

An aqueous ultrasound contact fluid includes a pharmaceutical grade triglyceride and a pharmaceutically acceptable emulsifier and the use of the ultrasound contact fluid in an intraoperative or interventional ultrasound imaging procedure. A method for intraoperative ultrasound imaging includes filling an aqueous ultrasound contact fluid into a body cavity. The aqueous ultrasound contact fluid is a composition comprising a pharmaceutical grade triglyceride and a pharmaceutically acceptable emulsifier and optionally a pharmaceutically acceptable humectant, and the triglyceride content is in the range of 8-240 g/1000 ml composition contact fluid and the amount of emulsifier is 0.4-18 g/1000 ml composition contact fluid, and optionally a humectant in the amount of 1.2-30 g/1000 ml. The method further includes obtaining an ultrasound image of a body region that comprises at least part of the body cavity filled with the aqueous ultrasound contact fluid. The aqueous ultrasound contact fluid reduces image artifacts associated with the body cavity.

Ultrasound contact fluid

The present invention concerns a chair seat () with mutually moveable seat parts (). The seat parts () are mutually shiftable in substantially one and the same first plane. The chair seat is particularly adapted to be used as a chair for surgeons.

Chair seat with mutually moveable parts

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Trondheim, Norway

Tormod Selbekk