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8455834 Systems and methods for patient positioning for nuclear medicine imaging  
Systems and methods for nuclear medicine (NM) imaging using different radiopharmaceuticals are provided. One method includes generating images of a region of interest (ROI) from radioactive...
8442179 Method and apparatus for tagging and identifying a target  
A method and apparatus for identifying and tagging a target, such an individual or an item, are described that provide an improved mechanism for identifying the target without alerting the target....
8239002 Guiding a tool for medical treatment by detecting a source of radioactivity  
Systems and methods disclosed provide for guiding a tool using a source of radioactivity. The method includes implanting a source of radioactivity at a position having a geometric relationship to...
8208987 Method and device for quantifying the uptake of at least one radiotracer in a body region of a patient of interest to a positron emission tomography measurement  
A method for quantifying the uptake of at least one radiotracer in a body region of a patient of interest to a positron emission tomography measurement is disclosed. In at least one embodiment of...
8158433 Fragmented taggant coding system and method with application to ammunition tagging  
The present invention relates to identification tagging, and is specifically directed to identification tagging of ammunition. An isotopic taggant is deposited in a layer at the interface between...
8017915 Method and apparatus for emission guided radiation therapy  
An apparatus comprising a radiation source, coincident positron emission detectors configured to detect coincident positron annihilation emissions originating within a coordinate system, and a...
7985589 Quantification of analytes using accelerator mass spectrometry  
The invention provides a calibrating method for use in a method of determining the quantity of an analyte labeled with an accelerator mass spectrometry (AMS) isotope in a test sample. The samples...
7978885 Analysing biological entities  
A method of analysing a plurality of biological entities using an imaging apparatus. The method comprises: providing a marker for said plurality of biological entities, said marker being capable...
7847274 Localization of a radioactive source within a body of a subject  
A computerized system 40 for locating a device. System 40 includes a sensor module 20 and a CPU 42. A radioactive source 38, associated with the device, produces a signal in the form of...
7763850 Method and device for the real-time measurement of the consumption of oil from an engine oil separation system, using radioactive tracers  
The invention relates to a method of determining the consumption of oil from an oil separation system (2) in the blow by gas recycling circuit of an internal combustion engine. The invention is...
7619222 Automatic radioactivity analyzer of mixed liquid beta emitter  
The present invention relates to an automatic radioactivity analyzer of mixed liquid beta emitter which comprises: a sample preparation part (1, 2, 3, 4, 5, 6, and 7) for extracting a liquid...
7560690 System for delivery of a tracer in fluid transport systems and use thereof  
The present application describes a specific tracer delivery system that has been tested. The claimed system is composed of melamine formaldehyde resin (MFR) doped with various tracer materials....
7402800 Method and device for the continuous determination of damage to systems used for the post-treatment of heat engine exhaust gases  
The invention relates to a method for the continuous determination of the damage to at least one system (7) used for the post-treatment of exhaust gases from an internal combustion engine (2),...
7323341 Stable isotopic identification and method for identifying products by isotopic concentration  
A stable isotopic identification comprising a mathematical array of concentrations of isotopes found in a product, said mathematical array being presented in a machine readable form and comparable...
7291836 Method and device for continuous determination of lubricating oil consumption of an internal combustion engine  
The invention relates to a method and device for the continuous determination of the lubricating oil consumption of an internal combustion engine. The inventive method consists in: placing a...
7172799 Radiation flood source and method for producing the same  
The invention relates to a process for producing a radiation flood source by printing a radioactive solution, and a radioactive printing solution used in this method. The present invention also...
7128812 Apparatus and method for determining the level in a coke drum  
A foam level in a delayed coking drum is detected by utilizing the varying density of the boiling mass in the coke drum which has larger bubbles and is less dense at the top and smaller bubbles...
6740875 Gamma watermarking  
A covert, gamma-ray “signature” is used as a “watermark” for property identification. This new watermarking technology is based on a unique steganographic or “hidden writing” digital signature,...
6693277 Detection of submicron scale cracks and other surface anomalies using positron emission tomography  
Detection of submicron scale cracks and other mechanical and chemical surface anomalies using PET. This surface technique has sufficient sensitivity to detect single voids or pits of...
6448564 Apparatus, methods, and systems for assaying materials  
An apparatus, methods, and systems for assaying materials are disclosed using a combination of detectors that scan for areas of material non-uniformity, and assay the type and amount of...
6233908 Method of introducing a leak trace material into an airbag inflator  
A method for introducing a radioactive leak trace material into an apparatus for inflating an inflatable device is disclosed in which a mixture containing a preselected quantity of the radioactive...
6227038 Radiotracer method for measuring leakage of engine coolant  
Leakage of engine coolant into the engine lubricating oil can be detected to high sensitivity levels by dissolving a glycol-soluble salt of 86 Rb as a tracer in the coolant and detecting the beta...
6149593 Method and apparatus for detecting beta radiation  
A method and apparatus for detecting beta particles in the presence of high gamma background using secondary electron emission (SEE) as the primary beta particle detector. Diamond-like thin films...
6043486 Absolute standard reference materials for low-level concentration measurements  
A concentration measurement device is calibrated for a target element by performing a concentration measurement on a reference standard sample which includes a number of atoms of a radioactive...
5929437 Encapsulated radioactive tracer  
Radioactive particles are provided for use in tracing the flow path in or near a well of fluids injected into the well. The particles include an element which can be made radioactive by...
5851315 Process for producing radioisotope source  
A process for implanting radioisotope ions into a substrate to create a radioisotope source, utilizing the chemical binding of selected ions to the surface of the substrate. Extraneous material...
5828712 Coolant water flow rate test with rubidium nuclear tracer for reactors  
Fluid flow rates are determined with a nonradioactive tracer agent in the operation of a water cooled nuclear fission reactor employed for driving electrical power generators. The technique is...
5760394 Isotopic taggant method and composition  
A system for tagging products or substances for retrospective identification using controlled abundance ratios of multiple isotopes in each of one or more elements in the tagged substance. The...
5543617 Method of measuring flow velocities using tracer techniques  
A method of measuring flow velocities in flowing fluids includes injecting into the flow a non-radioactive tracer having a neutron capture cross section higher than that of the flowing fluids, for...
5532122 Quantitation of gamma and x-ray emitting isotopes  
For isotopes decaying by capture of an inner shell electron by the nucleus, coincident emission of X-ray and gamma photons may occur. The X-ray results from the drop of an outer shell electron to...
5514869 Method for estimating the probabilities of digestive tract doses due to the passage of a solid radioactive particle  
A new, improved method for estimating doses to body organs in the digestive system due to the passage of a solid radioactive particle through the digestive system. Normally, in this instance,...
5473643 Corrosion testing using isotopes  
A method for determining the corrosion behavior of a material with respect to a medium in contact with the material by: implanting a substantially chemically inert gas in a matrix so that...
5453615 System for radiogenic detection and analysis of microscopic flaws in the surface structure of solid objects  
An improved system for detection and analysis of microscopic flaws in objects such as high-speed turbine blades collimates the gamma radiation emanating from flaws in an object treated with a...
5347139 Dual energy tracer quantitative analysis  
Using storage phosphor recording media, two exposures are made of a sample containing two target substances tagged with different radiative emitters, for example 32-P and 35-S. The first exposure,...
5306911 Method for determining the flow rate of aqueous phases in a multiphase flow  
A method for determining at least one dynamic flow characteristic of a multiphase flow circulating in a pipe, said flow being composed of an aqueous phase and a hydrocarbon (oil) phase. Oxygen...
5287273 Functional organ images  
A noninvasive method of determining function of a target organ using a pre-calibrated imaging system is described. The method contains the steps of introducing an indicator/tracer bolus into the...
5285065 Natural gamma ray logging sub  
A natural gamma tag marking materials for sub or permanent markers used in gamma logging operations, such natural gamma materials having a gamma count of between 200 and 1000 counts per second....
5250807 Sand detector  
A method of measuring or detecting an unknown distribution and content of solid material in a flow of liquid and gas is achieved without any calibration. One or several activated probes or...
5200615 Method and apparatus for detecting the presence of fluids  
A method and apparatus particularly for monitoring leakage of a fluid contained within a double-walled tank into its interstitial space is disclosed. The sensor includes an element which is...
5191210 Produced steam survey device and method  
A device and method for determining the flow of steam in a production well has a sonde with a pair of gamma ray detectors and a source of gaseous radioactive material therein. The sonde is lowered...
5187366 Sensors for detecting leaks  
A sensor for detecting leakage of a particular fluid into an area to be monitored, such as an interstitial space of a double-walled tank or pipeline, comprises first and second fiber optics. A...
5177360 Devices and method to confirm the authenticity of art objects  
Art objects are authenticated by using a pair of sealed radioactive sources emitting identical gamma ray spectra unique to that pair. One of the sources is attached to a particular, assigned art...
5150292 Method and system for determination of instantaneous and average blood flow rates from digital angiograms  
A method and system for quantitation of blood flow rates by using digital subtraction angiographic (DSA) images, wherein the spatial shift of the distribution of contrast material injected into an...
5128266 Method for testing the radioactivity of objects containing metal or concrete  
Radioactively contaminated objects are placed into a borofluoric acid bath following a rough spot test and are precipitated in a measurable geometry on the cathode plates in the course of an...
5051596 Autography marking tape  
Marking tape adapted for use in autography, comprising: a substrate having an upper surface, a phosphorescent coating applied to the upper surface, the coating including phosphor powder grains,...
5049743 Surface located isotope tracer injection apparatus  
The present disclosure is directed to a method and apparatus for controllably injection a radioactive isotope tracer fluid into a fracture fluid, a manifold or mud flow line connected to a well....
5047632 Method for determining dynamic flow characteristics of multiphase flows  
A method for determining at least one dynamic flow characteristic of a multiphase flow circulating in a pipe, the flow being composed of a lighter dispersed-phase and a heavier continuous-phase. A...
5001343 Apparatus and process for testing leaks in packaging for integrated circuits  
A process for testing leaks of a package (20) comprises the steps of introducing the package (20) into a chamber (30) and pressurizing the chamber (30) with a radioisotopic gas (14). After the...
5001342 Radioactive tracer cement thickness measurement  
A process for measuring the thickness of the cement surrounding a casing in a borehole wherein a radioactive tracer is mixed with the cement and the response is monitored to determine the cement...
4992255 Capillary depletion method for quantifying transcytosis through the blood-brain barrier  
A method for quantifying transcytosis through the blood-brain barier by infusing a perfusate into the brain of a living mammal. The perfusate includes a radio-labelled test compound and a...

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