Abstract:

Fluorescence video angiography has recently been introduced in neurosurgery. Such videos are analysed by a new software to allow quantitative characterization of the blood flow during neurovascular operations (clipping an aneurysm, treatment of an angioma). For these purposes the fluorescence dye Indocyanin Green is given intravenously. After activation by a near-infrared light source the fluorescence signal is evaluated by the software. Reference measurements by using a flow phantom were performed to verify the quantitative blood flow results of the software and to validate the software algorithms. The analysis of intraoperative videos provided characteristic biological parameters allowing their implementation in the flow phantom. Under certain conditions the experiments with the help of the flow phantom showed, the results of the software parameter identification algorithmus are within the range of parameter accuracy by the reference method.

Abstract:

Verfahren zur Personenerkennung bei einer Personenwaage, wobei das Gewicht und eine zweite physikalische oder physiologische Größe einer zu erkennenden Person gemessen werden, wobei die beiden mittels der Messungen erhaltenen Messwerte von Gewicht und zweiter Größe verglichen werden mit in einem Speicher abgelegten, einer bestimmten Person zugeordneten Vergleichswerten von Gewicht und zweiter Größe, wobei zumindest einer der Vergleichswerte der Mittelwert aus vorangegangenen Messungen des Gewichts und/oder der zweiten Größe der Person ist, wobei die beiden Messwerte bei Übereinstimmung mit den Vergleichswerten der Person zugeordnet werden, und wobei der Mittelwert gewichtet wird.

Abstract:

A system and a method for examining an object containing a fluid liquid are provided, wherein the object is illuminated with measuring light and images are temporarily shortly subsequently recorded. The images are evaluated per pixel to determine perfusion data from a high frequency portion above 1 kHz and to determine further information about properties of the object from a low frequency portion below 100 Hz, such as a degree of oxygenation of haemoglobin, a concentration of haemoglobin or a concentration of ICG. This information determined by evaluation is displayed in a form of an image in superposition with a white light image of the object.