contrast (Total 14463 Patents Found)

The present invention provides a photographic silver halide emulsion containing at least two grain surface modifiers. The grain surface modifiers comprise a transition metal complex containing a transition metal chosen from Groups V to X, inclusive, of the periodic table and a nitrosyl or thionitrosyl ligand; and a tra...
A positive photoresist metal ion aqueous developer is provided that gives a high contrast to the photoresist. The developer disclosed comprises a formulation of aqueous alkali-base such as potassium hydroxide and a fluorocarbon surfactant. The incorporation of the fluorocarbon surfactant provides the unexpected i...
Organic chelating ligands, organic chelating ligand precursors, and metal chelates are disclosed. Methods for synthesizing the same are also described, including methods for preparing optically-enriched or optically-pure compositions of the same....
An apparatus and method for extracting an object of interest from an image using image matting are disclosed herein. The apparatus for extracting an object of interest from an image using image matting includes a saliency map generation unit, a trimap generation unit, and an alpha map generation unit. The saliency map ...
Single X-ray grating differential phase contrast (DPC) X-ray imaging is provided by replacing the conventional X-ray source with a photo-emitter X-ray source array (PeXSA), and by replacing the conventional X-ray detector with a photonic-channeled X-ray detector array (PcXDA). These substitutions allow for the eliminat...
The present invention relates to a biocompatible contrast agent and a method of its preparation. More particularly, the present invention relates to a multifunctional contrast agent manufactured by prepairing a novel polysuccinimide-based polymer by introducing an alkanolamine group to the main group of the polysuccini...
A method of using a fluorinated polymer having a glass transition temperature below 40 C as a contrast agent in 19 F magnetic resonance imaging (MRI) of a solid object, said solid object comprising said contrast agent. The invention relates to a solid object comprising a structural component and an imaging component, ...
Provided is a contrast medium comprising at least one molecular probe and at least one optical probe on a surface of a substrate having an ultrasound imaging function. More specifically, a contrast medium having sensitivity to not only ultrasound but also light excellent in real-time imaging and resolution and having a...
A method tracks contrast agent in a magnetic resonance tomography examination with examination table moving continuously in the Z-direction. In the method, a first magnetic resonance signal in a first magnetic resonance measurement without contrast agent. The first MR signal is acquired along a middle k-space line that...
The invention relates to a method of CEST or APT MR imaging of at least a portion of a body ( 10 ) placed in a main magnetic field B 0 within the examination volume of a MR device. The method of the invention comprises the following steps: •a) subjecting the portion of the body ( 10 ) to a saturation RF pulse at a s...
A liposomal ultrasonic contrast composition and its preparation.The composition consists of film-forming materials and fluorocarbon gas. paid film-forming materials consist of 1-10 wt% of phospholipid, 5-15 wt% of foaming agent, 0.5-10 wt% of stabilizer, 70-90 wt% of polymer. The vesicular ultrasonic contrast compositi...
Emulsions of paramagnetic contrast agents, and processes of making and using them are disclosed. The emulsions contain water, a dispersed oil phase and a complex of a paramagnetic metal ion and an organic chelator having a C 10 -C 30 unsaturated aliphatic group. The emulsions are very stable and therapeutically accep...
A system for determining a shape of a feature is provided. The system includes an analysis system providing a signal corresponding to a scan of a portion of a surface of the feature and a stored signal corresponding to a portion of a profile of a similar feature, wherein the profile may have differing contrast levels t...
A method of controlling the contrast by reproduction such as screen reproduction, e.g. screen reproduction of halftone pictures by means of a main exposure and an auxiliary exposure, whereby the density both in the lightest and in the darkest field of the picture and consequently the contrast range of the halftone pict...
A device including: an image sensor for imaging an object field reflected from an object to be imaged; a first objective lens for focusing a background field from the object into a concentrated energy field on a spatial frequency plane of the first objective lens; and a programmable spatial light modulator positioned i...
The present invention relates to contrast agents for diagnostic imaging with prolonged blood retention. In particular, this invention relates to novel compounds that are characterized by an image enhancing moiety (IEM); a protein plasma binding moiety (PPBM); and a blood half-life extending moiety (BHEM). This inventio...
A method of magnetic resonance analysis of at least one type of molecules present in a solvent, the method comprises (a) applying a first radiofrequency pulse sequence selected so as to initially select a coherence of an order n for the at least one type of molecules in the solvent, wherein n is zero, a positive or a n...
A display ( 1 ) for displaying an image and a method for driving such display is proposed. Therein, the display comprises: a background light ( 31 ), a first LCD panel ( 3 ) defining an array of pixel elements ( 13 ), a second LCD panel ( 5 ) defining an array of pixel elements ( 29 ) and a control unit ( 37 ) for driv...
A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus ...
Novel, non-toxic cobalt-based contrast and imaging agents for use in enhanced medical imaging modalities and processes are described, as well the manufacture of markers containing such contrast agents is described, and uses for such imaging markers and contrast agents in a variety of therapeutic applications and device...
Embodiments disclosed herein relate to improved X-ray contrast media compositions and methods of using the same for treating symptoms related to allergic reactions, inflammatory conditions, symptoms of the common cold and certain cancers....
Methods and systems for using magnetic resonance (MR) imaging include obtaining a T1-weighted MR image and a proton-density (PD) weighted MR image from a dual-image acquisition following an inversion-recovery (IR) pulse. The T1-weighted and PD-weighted images are used to obtain a polarity function describing a positive...
A method and apparatus for detecting opens and shorts in a metalization layer includes creating a reference feature list of opens features and at least two reference feature lists of shorts features included in a top surface metalization. A first of the at least two reference feature lists include shorts features havin...
A contrast enhancement filter having antistatic and antireflection properties is disclosed. The article comprises a plastic support sheet carrying on one side thereof a layer of indium tin oxide, and superposed upon said layer, an antireflection layer. A light-polarizing element is affixed to the opposed side thereof. ...
A method and apparatus are provided, for improving contrast detected in a fringe projection autofocus system that projects light from a substrate to a digital camera. The method and apparatus reduce the fill factor of the digital camera in a direction that improves the contrast at spatial frequencies near or above the ...
Disclosed are an MRI apparatus and an image contrast enhancement method capable of acquiring an image with enhanced contrast between different tissues while reducing an imaging time even if a SPEC-IR pulse is used as an RF pre-pulse. An echo signal is measured from an object, which includes a first tissue having a firs...
A method for enhancing a virtual non-contrast image, includes receiving a pair of dual scan CT images and calculating a virtual non-contrast image from the pair of CT images using known tissue attenuation coefficients. A conditional probability distribution is estimated for tissue at first and second points in each of ...
A magnetic resonance imaging apparatus includes an imaging unit and a compensation unit. The imaging unit acquires image data by imaging that applies a pre-pulse for controlling contrast. The compensation unit suppresses a remnant magnetic field having an intensity according to slice position. The remnant magnetic fiel...
Novel, non-toxic cobalt-based contrast and imaging agents for use in enhanced medical imaging modalities and processes are described, as well the manufacture of markers containing such contrast agents is described, and uses for such imaging markers and contrast agents in a variety of therapeutic applications and device...
A detection sensor with a single switch for multi-function programming of the sensor is disclosed. The sensor has a processor operatively connected to the switch, an emitter, and a detector for controlling one or more operational parameters of the sensor in response to a program signal from the switch. In the preferred...
An apparatus and method are disclosed for maximizing interference contrast in an interferometric quantum cryptography system to detect eavesdropping by utilizing a tunable emitter station in communications with a receiver station via a quantum communications channel and a “public” communications channel. The tunabl...
A novel technique for velocity measurements (PC-SSFP) is disclosed that combines CINE Phase Contrast (PC) MRI and balanced Steady State Free Precession (SSFP) imaging. Flow encoding is performed without the introduction of additional velocity encoding gradients in order to permit data acquisition with short TR comparab...
A method for automatically measuring currents induced on conducting structures positioned in the bore of a magnetic resonance imaging (“MRI”) scanner using a single magnetic resonance image is provided. A conductive structure is positioned within the bore of the MRI scanner during imaging. When the MRI system is tr...
An ultrasonic diagnostic imaging system produces contrast enhanced images which are processed differently during different stages of contrast agent wash-in. During an initial stage of contrast wash-in, imaging is done using pixels processed by maximum intensity detection, to better reflect the rapid change in contrast ...
Cette invention concerne des dispositifs, des systèmes, des procédés et produits programme informatique de gestion de données relatifs à la distribution de produits de contraste dans le cadre d'une procédure médicale. Le dispositif et le système comprennent une unité de commande pouvant être reliée à un...