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4729380 |
Iridium 191-M generator
Potassium osmate, of the formula K 2 Os O 2 (OH) 4 ), used to make a column for the generation of Ir-191 m, which is used in first pass angiography to detect cardiac defects in patients.
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4723261 |
X-ray examination apparatus incorporating image subtraction
An X-ray examination apparatus incorporating digital image subtraction in which from a series of images to be formed of an object with and without contrast medium those images are selected for...
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4718432 |
CT imaging apparatus and method for measuring local cerebral blood flow
In a CT imaging apparatus, tracer gas such as Xenon is drawn via a pipe into a patient in synchronism with X-ray tomographic data acquisition. The tracer gas inhalation is controlled by a data...
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4716904 |
Heart output and circulatory impedance measuring method and apparatus
The invention shows a heart output and circulatory impedance measuring med and associated apparatus based on consecutive subtraction and synchronous summation of digitized ventriculographic images...
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4716905 |
Method of retrograde fluorescent labeling of neurons
A fluorescent retrograde axonal tracer method for use in neuroanatomical studies of the brain involves the use of dilute solutions of amidino-stilbene compounds or salts, specifically...
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4709703 |
Imaging system and method using radiopaque microspheres for evaluation of organ tissue perfusion
A radiologic imaging system and method (20) using radiopaque microspheres for evaluating organ tissue perfusion. Radiopaque microspheres are administered to organ tissue (22) which is then scanned...
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4709332 |
High speed image data processing
A minimally invasive technique for obtaining X-ray images of the anatomical vasculature of a living patient includes intravenously injecting the patient with an X-ray contrast medium, obtaining...
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4706683 |
Method and apparatus for bolus delivery of gases and aerosols and insufflations
A method and apparatus for the bolus administration of a gas such as a radioactive gas includes a face mask defining a closed space into which a straw-like administration tube extends sufficiently...
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4693255 |
Medical apparatus method for assessing the severity of certain skin traumas
An objective medical analysis system for assessing the severity of traumas to human skin, particularly for objectively analyzing the degrees of burns to human skin, utilizing computerized analysis...
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4688175 |
Image processor with automatic setting of window width and level for individual blocks of the image
An image processing apparatus includes frame memories for storing information of an image to be displayed; a block memory for dividing the information stored in the frame memories into a given...
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4671256 |
Medical scanning, monitoring and treatment system and method
A system and method for detecting, monitoring and treating a malady such as a disease in a living being. In one form, a dose of a drug formed of a multitude of drug units containing antibodies and...
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4669481 |
Method of magnetic resonance imaging using chromium-labelled red blood cells
Red blood cells (RBC's) loaded with nonradioactive chromium in paramagnetic form are employed as a contrast agent for magnetic resonance imaging (MRI). The method has promise for intravascular...
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4669105 |
System for quantitative arteriography
Apparatus for the generation of an image of a blood vessel comprises an x-ray source to irradiate the vessel. X-ray image collection means receive the x-ray image of the vessel and conversion means...
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4662379 |
Coronary artery imaging system using gated tomosynthesis
A method of imaging a blood vessel such as a coronary artery includes the steps of a dual energy providing radiation source and a radiation detector on opposing sides of a target area and at a...
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4660563 |
Method and means for detection of arterial lesions
The atherosclerotic plaques which form arterial lesions have been found to take up lipoproteins from the blood flowing through the arteries. Accordingly, the early detection of arterial disease is...
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4643891 |
Preparation and use of a .sup.195m Au-containing liquid
A method for preparing a 195m Au-containing liquid is provided. In the method, 195m Hg is adsorbed on an adsorption agent and then the daughter radioisotope 195m Au is eluted from the...
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4639867 |
Digital fluoroscopy apparatus
In a digital fluoroscopy apparatus, digital reference data is written in a given data position of digital image data where no medical information is contained. This digital reference data has...
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4636380 |
Novel physiologic chemical method of labeling protein substances with the radionuclides of indium
A novel chemical method of labeling plasma proteins, compounds and substances containing proteins with the radionuclides of indium at physiologic pH 6-8 condition producing an efficiently labeled...
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4622976 |
Method and apparatus for conducting xenon inhalation studies
Inhalation methods and apparatus are provided for performing xenon-enhanced studies or tests. The present invention is useful during computed tomography studies to provide neurologists with...
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4608992 |
External magnetic detection of physiopathological and other parameters
A technique for transmitting from within the body information concerning an internal parameter (e.g., a measurement of a physiopathological parameter or a parameter generated by an implanted...
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4595014 |
Imaging probe and method
The disclosure is directed to an apparatus and method for imaging radiation pattern from within a body. In accordance with the preferred method of the invention, there is provided a technique for...
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4592361 |
Electro-optical device and method for monitoring instantaneous singlet oxygen concentration produced during photoradiation using pulsed excitation and time domain signal processing
A method and apparatus is disclosed for optically monitoring the concentration of singlet oxygen produced during photoradiation. A composite optical emission in the 1.27 micron frequency band is...
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4585008 |
Real time cardiac radionuclide imaging
Real time acquisition of cardiac or other gated cyclical data using a scintillation camera with image formulation utilizing only such data that satisfied a preselected time frame for each cycle....
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4585941 |
Dosimetry system for strontium-rubidium infusion pump
The dosimetry system used with a strontium-rubidium infusion system is a very high speed circuit capable of measuring the radioactive dosage infused into a patient in real time. The dosimetry...
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4582061 |
Needle with ultrasonically reflective displacement scale
A puncturing device for insertion into the body, which has an ultrasonically coded displacement scale of gaseous inclusions regularly spaced along the length of the device. Owing to the acoustic...
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4577636 |
Method for diagnosis of atherosclerosis
Method for diagnosis of the presence of atherosclerosis plaques. The method comprises injection of a hematoporphyrin which is selectively absorbed by atheromotous plaques. The hematoporphyrin is...
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4556057 |
Cancer diagnosis device utilizing laser beam pulses
Cancer diagnosis device contains an endoscope comprising a light pipe used to transmit light beams from respective light sources and an image guide used to observe the flesh of the organism during...
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4551800 |
Integrated hybrid image remasking in a subtraction angiography method
In a subtraction angiography hybrid difference images are generated and reviewed visually. Hybrid images that exhibit no x-ray contrast medium and are free of artifacts are identified and selected...
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4544949 |
X-Ray diagnostic apparatus and method
It is desirable in a digital subtraction angiography to realize the stereoscopic X-ray image visualization of a blood vessel by means of an X-ray diagnostic apparatus. In accordance with the...
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4543604 |
Diagnostic radiology system for angiographic X-ray examinations
An exemplary embodiment comprises an image intensifier television pickup installation, at least one image memory, a subtraction device for the subtraction of image data occurring at different...
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4541438 |
Localization of cancerous tissue by monitoring infrared fluorescence emitted by intravenously injected porphyrin tumor-specific markers excited by long wavelength light
An improved apparatus and method for optically localizing cancer lesions occluded beneath healthy tissue layers. A porphyrin tumor-specific marker is injected into a patient. After several days the...
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4542459 |
Matched filter for x-ray hybrid subtraction
Low and high energy x-ray exposures are made before and after an injected x-ray contrast medium arrives at a blood vessel of interest. In one mode, low and high energy mask images are made and...
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4536790 |
Apparatus and method for fluoroscopic imaging of a body
The disclosure is directed to a method and apparatus for generating a processed video image of a fluid-carrying vessel in a body, and can also be used to obtain information concerning the flow rate...
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4533946 |
Diagnostic X-ray apparatus
A diagnostic X-ray apparatus emitting a pulsed X-ray radiation and including a processor for performing digital X-ray subtraction imaging which includes digitization of the video signals from an...
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4520829 |
Method of taking angiographs
Angiographic process utilizing contrast mediums for the roentgenographic representation of living organ vessels, especially human, wherein a blank photograph is made of a vascular region to be...
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4514759 |
Diagnostic radiology system for angiographic x-ray examinations
An exemplary embodiment comprises an image intensifier television chain and an image subtraction device, connected thereto, with three image memories. In two image memories, a blank image is...
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4510929 |
Disposable radioactive aerosol inhalation apparatus
A disposable aerosol inhalation device for use in producing properly sized radioactive tagged particles. A mouthpiece is attached to a wye connector containing a valving system for inhalation of...
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4504908 |
Matched filter for X-ray temporal subtraction
A matched filtering method for X-ray image subtraction procedures in which an X-ray contrast medium is injected intravenously. A sequence of pre-contrast X-ray images are made during a period...
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4503459 |
X-Ray diagnostic installation for providing subtraction images
An exemplary embodiment comprises an image intensifier television chain, a subtraction device which has at least one image memory and a difference stage for providing subtraction images through...
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4483342 |
Diagnostic radiology system for angiographic x-ray examinations
An exemplary embodiment includes an image intensifier television chain and an image subtraction device connected thereto, with at least one image memory whose stored image data is subtracted from...
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4466442 |
Carrier liquid solutions for the production of gas microbubbles, preparation thereof, and use thereof as contrast medium for ultrasonic diagnostics
The useful lifetime and the amount of microbubbles of a size less than 50 μm produced by mechanical agitation of an aqueous liquid employed as an ultrasonic contrast medium are increased by...
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4459990 |
Radiographic method and apparatus for the visualization of the interior of a body particularly useful for the visualization of a subject's circulatory system
A digital radiographic method and apparatus are described for the visualization of a portion of the circulatory system of a subject by feeding a catheter through a blood vessel while its progress...
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4444196 |
Digital intravenous subtraction angiography
In a digital intravenous subtraction angiography system an X-ray generator provides low mA continuous X-ray exposures illuminating a standard image intensifier producing an image scanned by a...
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4436095 |
Method and apparatus for imaging a body
An improved method and apparatus for generating video images of the internal structure of a body is disclosed. A contrast medium is injected into the vessel to be imaged. Radiation is directed at...
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4432370 |
Method and means for minimally invasive angiography using mono-chromatized synchrotron radiation
Non-invasive angiography is provided through use of monochromatized synchrotron radiation in a dichromographic procedure. A small quantity of an iodinated compound is introduced into the blood...
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4425580 |
Diagnostic x-ray installation for providing subtraction images
An exemplary embodiment includes a television pickup installation, image storage circuitry, a difference stage for the subtraction of two chronologically successively obtained image data signals...
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4404973 |
Heart muscle evaluation method and apparatus
A method and apparatus for evaluating the condition of the heart muscle utilizing a single roughly collimated radiation detector which is non-critically positioned over the heart muscle. A small...
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4372294 |
Method and apparatus for radiolabeling red blood cells
A method and apparatus for radiolabeling red blood cells is provided which includes a syringe holder, a vial containing heparin, a vial containing technetium-99m and a catheter. The vials and...
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4361049 |
Apparatus for calculating cardiac output
The invention provides apparatus for measuring the rate of flow of liquid being circulated in a closed loop system by a pump using a bolus of indicator injected suddenly into the system upstream of...
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4294259 |
Method and apparatus for characterizing blood flow through the heart
An automated method and improved device provide a measurement of blood flow through the heart by the detection and analysis of radioactivity emitted by a radioactive tracer introduced into a...
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