摘要:
Bei einem Verfahren bzw. bei einer Vorrichtung zur Generierung eines diagnostisch verwertbaren dreidimensionalen Bilddatensatzes mit einem Ultraschallgerät wird der Ultraschallkopf zur Erzeugung einer Sequenz einer Vielzahl von Ultraschallbildern frei über ein zu untersuchende Volumen geführt. Zur Bestimmung der Positions- und Orientierungsdaten der jeweiligen Bildebenen ist ein elektromagnetisches Sensorsystem vorgesehen, dessen Empfänger mit dem Ultraschallkopf verbunden ist. Die Ultraschallbilder werden bei der Datenakquisition zunächst in einem Bildverarbeitungssystem als Rohdaten mit dem Positions- und Orientierungsdaten abgelegt. Diese Rohdaten werden dann in einem dreidimensionalen Datensatz transformiert, der das zu untersuchende Volumen erfaßt und in welchem sämtliche Bilddaten oder Bildwerte auf ein neues gemeinsames Bezugssystem, vorzugsweise auf ein kartesisches Koordinatensystem bezogen sind.
摘要:
A method and apparatus for ultrasound tomography for use in clinical diagnostics, the apparatus comprising paired couples of transmisson transducers (3) and reflection transducers (5, 6), the paired couples of transducer means being independently operable within a container (1) of ultrasound transmission medium to provide data capable of processing by computational methods for mathematical reconstruction of the distribution of specific values of acoustic data to permit separate comparative and synergistic examinations of the data thus obtained to classify the internal structure of a body.
摘要:
Provided are a composition for an acoustic lens, containing the following components (A) to (D), an acoustic lens, an acoustic wave probe, an ultrasound probe, an acoustic wave measurement apparatus, an ultrasound diagnostic apparatus, a photoacoustic wave measurement apparatus, an ultrasonic endoscope, and a method for manufacturing an acoustic wave probe. (A) a linear polysiloxane having a vinyl group, (B) a linear polysiloxane having two or more Si-H groups in a molecular chain, (C) a polysiloxane resin, and (D) zinc oxide particles having an average primary particle diameter of more than 10 nm and less than 300 nm, and surface-treated with at least one surface treatment agent of a silane compound, an aluminum alkoxide compound, a zirconium alkoxide compound, or a titanium alkoxide compound, provided that the silane compound has at least one of a hydroxy group directly bonded to a silicon atom or an alkoxy group directly bonded to the silicon atom.
摘要:
The invention describes a novel implementation of ultrasound or OCT techno-logy to approximate the dimensions of fluid-filled structures (when using ultrasound techno-logy) or other structures (when using OCT technology). The invention in a preferred embodi-ment is an elongated member such as a catheter that uses ultrasound or OCT technology to ap-proximate the dimensions of a structure into which the catheter has been placed. In a preferred embodiment, the catheter includes multiple ultrasound transducers arranged in an annular or circumferential configuration on, embedded into or within the body of the elongated member so that distance measurements can be obtained between the elongated member and the wall of the immediately facing structure (e.g., fluid-filled lumen): Utilizing these measurements, the present invention approximates for the physician the shape and size of the structure into which the elongated member is placed. The invention also includes a method for producing three-di-mensional images from two-dimensional Images.
摘要:
Provided is a composition for an acoustic lens, which is hard to wear and has excellent durability against high-level disinfectants, and in which a high-resolution observation with a short focus is realized by suppressing an acoustic velocity. The composition for an acoustic lens contains the following components (A) to (C). (A) a polysiloxane having a vinyl group, (B) a polysiloxane having two or more Si-H groups in a molecular chain thereof, and (C) alumina particles surface-treated with at least one surface treatment agent of an aminosilane compound, a mercaptosilane compound, an isocyanatosilane compound, a thiocyanatosilane compound, an aluminum alkoxide compound, a zirconium alkoxide compound, or a titanium alkoxide compound.