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271results about How to "Good for observation" patented technology

Self-referencing/body motion tracking non-invasive internal temperature distribution measurement method and apparatus using magnetic resonance tomographic imaging technique

A noninvasive image measuring method of measuring internal organ / tissue temperature using an MRI system. Temperature measurement insusceptible to body motion and spatial variation of magnetic field is realized by utilizing the position and size of a temperature change region as a priori information to determine the phase distribution of the complex magnetic resonance signal of water proton at a given temperature point and by subtracting the phase distribution before the temperature change estimated (self-referred) from the phase distribution in the peripheral region for each pixel of the image, thereby eliminating the subtraction process of image before and after temperature change. The precision of temperature measurement can be enhanced by estimating a complex curved surface formed of the peripheral region in each temperature change region of the real-part and imaginary-part images of the complex magnetic resonance signal, and calculating the phase difference between an actually measured complex signal distribution and the estimated complex signal distribution of the complex signal distribution for each pixel, thereby reducing the estimation error due to phase transition from −π to +π occurring in a phase distribution. Furthermore, temperature can be measured through optimal imaging following up body motion by using an optical positioning system in combination even if the part being measured is shifted.
Owner:GE MEDICAL SYST GLOBAL TECH CO LLC

Self-referencing/body motion tracking non-invasive internal temperature distribution measurement method and apparatus using magnetic resonance tomographic imaging technique

A noninvasive image measuring method of measuring internal organ/tissue temperature using an MRI system. Temperature measurement insusceptible to body motion and spatial variation of magnetic field is realized by utilizing the position and size of a temperature change region as a priori information to determine the phase distribution of the complex magnetic resonance signal of water proton at a given temperature point and by subtracting the phase distribution before the temperature change estimated (self-referred) from the phase distribution in the peripheral region for each pixel of the image, thereby eliminating the subtraction process of image before and after temperature change. The precision of temperature measurement can be enhanced by estimating a complex curved surface formed of the peripheral region in each temperature change region of the real-part and imaginary-part images of the complex magnetic resonance signal, and calculating the phase difference between an actually measured complex signal distribution and the estimated complex signal distribution of the complex signal distribution for each pixel, thereby reducing the estimation error due to phase transition from −π to +π occurring in a phase distribution. Furthermore, temperature can be measured through optimal imaging following up body motion by using an optical positioning system in combination even if the part being measured is shifted.
Owner:GE MEDICAL SYST GLOBAL TECH CO LLC

Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas

An artery, vein, aneurysms vascular malformation or arterial fistula is occluded through endovascular occlusion by the endovascular insertion of a platinum wire and/or tip into the vascular cavity. The vascular cavity is packed with the tip to obstruct blood flow or access of blood in the cavity such that the blood clots in the cavity and an occlusion if formed. The tip may be elongate and flexible so that it packs the cavity by being folded upon itself a multiple number of times, or may pack the cavity by virtue of a filamentary or fuzzy structure of the tip. The tip is then separated from the wire mechanically or by electrolytic separation of the tip from the wire. The wire and the microcatheter are thereafter removed leaving the tip embedded in the thrombus formed within the vascular cavity. Movement of wire in the microcatheter is more easily tracked by providing a radioopaque proximal marker on the microcatheter and a corresponding indicator marker on the wire. Electrothrombosis is facilitate by placing the ground electrode on the distal end of the microcatheter and flowing current between the microcatheter electrode and the tip.
REEAXMINATION RESULTS The questions raised in reexamination request 90/007,231, filed Oct. 4, 2004 have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e), for ex parte reexaminations, or the reexamination certificate required by 35 U.S.C. 316 as provided in 37 CFR 1.99(e) for inter partes reexaminations.
Owner:RGT UNIV OF CALIFORNIA

Constant volume combustion device for observing mutual effect of flame and pressure wave

The invention discloses a constant volume combustion device for observing the mutual effect of a flame and a pressure wave. A combustion bomb body is provided with an observation hole provided with an optical observation window; the optical observation window comprises optical glass provided with an annular boss on the outer side; the inner side and the outer side of the optical glass are respectively provided with an embedding end cover and a compressing end cover which are mutually connected through a bolt; the embedding end cover and the compressing end cover are arranged on the combustion bomb body through bolts; and high-temperature resistant gaskets are respectively arranged among the embedding end cover, the compressing end cover and the optical glass. According to the constant volume combustion device, the influence of the installation of the optical observation window of the combustion bomb body to the regularity of the inner cavity shape of the optical observation window is reduced, and the inner cavity smoothness is improved, so that the reflection effects of an inner flow field and a wall pressure wave are improved; and meanwhile, the stress manner of glass in the traditional optical observation window is changed, the thickness of the glass is reduced, and the device is beneficial to observation and shooting effects of experiments.
Owner:TIANJIN UNIV

Laser splice welding system for high-strength steel structure thin plates

The invention provides a laser splice welding system for high-strength steel structure thin plates. The laser splice welding system comprises a welding portal frame and the like. A fixed pressing device, a movable pressing device and a welding platform are all located below the welding portal frame. The fixed pressing device and the movable pressing device are located on the two sides of the workpiece welding platform correspondingly. A transversely-moving trolley is arranged on the welding portal frame, a robot level laser composite welding system is fixed to the position below the transversely-moving trolley, and a workpiece transferring device is located on the side faces of a front welding material frame and a rear welding material frame. The welding portal frame is sleeved with a laser protective door, and the front welding material frame and the rear welding material frame are located below one side of the fixed pressing device. According to the laser splice welding system for the high-strength steel structure thin plates, the diversified welding methods such as self-fusible welding, laser filler wire welding and laser electric-arc hybrid welding can be achieved, automatic locating can be conducted before welding; and in the welding process, real-time tracing of welding joints can be achieved, the welding technological parameters are adjusted in real time according to slope gap and misalignment changing, and self-adaptation filling of welding wires is achieved. According to the laser splice welding system, teaching programming is easy, and operating is convenient.
Owner:SHANGHAI JIAO TONG UNIV +2

Ticket-holder security checkpoint system for deterring terrorist attacks

A security checkpoint system and apparatus that provides security officers entrusted with protecting our nations' critical infrastructure or other high risk locations, a means of isolating and tracking suspicious persons who enter large public events or public transportation systems. Via a machine, communications system and components that are positioned at entrance points such as stadium section entrances, train station platform entrances, etc., a suspicious person entering the system is processed through a series of onsite as well as off-site follow-up investigations upon first being noticed as suspicious. The machine and it's overt security checkpoint system is designed to induce a suspicious reaction in persons with a guilty mind. As the person registers upon entrance to a facility, a close up view of the persons' face, as well as his seat assignment, is captured by the machine in digital image format. It is then sent by real-time transmission to security personnel in proximity to the location of the machine. A security officer positioned to spot persons manifesting suspicious behavior upon having to register at the machine, highlights the suspicious entrant electronically and sends an e-mail alert along with the digital images of both the suspicious entrant and his ticket, that also displays his seat number or destination, to on-site, as well as offsite law enforcement personnel for further review and investigation as necessary. As the system ties directly into the internet and can be sent to various law enforcement agencies for review, the resulting effect of such broad coverage of review of suspicious persons by law enforcement, makes this invention one of the most effective means of deterring terrorists and criminals in society today.
Owner:LG DISPLAY CO LTD
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