| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324315000 | With sample resonant frequency and temperature interdependence | 10 |
| 20080309339 | System and Method for Improving the Analysis of Chemical Substances Using Nqr - A method for analysing a chemical substance containing quadrupolar nuclei to determine a measurable characteristic of the substance. The method includes irradiating the substance with RF energy in a prescribed manner to stimulate NQR of certain quadrupolar nuclei within the substance. Then receiving and processing a signal emitted from the substance to isolate an NQR signal therefrom. Thereafter analysing the NQR signal to obtain a measure of the characteristic of the substance; and providing an output indicative of the measure for analytical purposes. Specific methods for analysing a chemical substance during production thereof to determine a characteristic of the substance indicative of the quality thereof, and for searching for chemicals together with specific systems are also described. | 12-18-2008 |
| 20090015258 | MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD - A magnetic resonance imaging apparatus performs photographing by magnetic resonance imaging using hardware of which temperature is likely to rise due to a photographing operation. The magnetic resonance imaging apparatus includes an obtaining device, an alert state detecting device, and a control device. The obtaining device obtains information providing an indication of temperature of the hardware during the photographing. The alert state detecting device detects the occurrence of an alert state where the temperature of the hardware is likely to rise enough to affect the photographing, on the basis of the obtained information. The control device controls the photographing so as to suppress temperature rise of the hardware according to the detection of the occurrence of the alert state. | 01-15-2009 |
| 20090066330 | NMR MEASUREMENT OF WAX APPEARANCE IN FLUIDS - A method for determining a wax appearance temperature of a fluid includes obtaining nuclear magnetic resonance (NMR) measurements of the fluid at a plurality of temperatures; deriving a NMR parameter from each of the NMR measurements; and determining the wax appearance temperature by analyzing the NMR parameter as a function of temperature. An apparatus for detecting wax appearance in a fluid includes a sample cell for holding a fluid for nuclear magnetic resonance (NMR) measurements at a plurality of temperatures; a temperature measuring device disposed proximate the sample cell; a magnet for polarizing molecules in the fluid in the sample cell; at least one radiofrequency (RF) coil for generating pulses of magnetic field and for detecting NMR signals; and circuitry for controlling and measuring the temperature of the fluid in the sample cell and for obtaining NMR measurements. | 03-12-2009 |
| 20090096450 | BO FIELD DRIFT CORRECTION IN A TEMPERATURE MAP GENERATED BY MAGNETIC RESONANCE TOMOGRAPHY - In a method to correct a B | 04-16-2009 |
| 20110175615 | HYBRID REFERENCELESS AND MULTIBASELINE PRF-SHIFT MAGNETIC RESONANCE THERMOMETRY - Proton resonance frequency shift thermometry may be improved by combining multibaseline and referenceless thermometry. | 07-21-2011 |
| 20110291654 | METHOD FOR REDUCING MAGNETIC RESONANCE TEMPERATURE MEASUREMENT ERRORS - A method for reducing magnetic resonance temperature measurement errors, which is used for the high-intensity focused ultrasound device for monitoring magnetic resonance imaging includes obtaining a magnetic resonance phase diagram as a reference image before the high-intensity focused ultrasound device heats the heating area; obtaining another magnetic resonance phase diagram as a heating image during or after the heating process of the high intensity focused ultrasound device; calculating the temperature changes in the heating area according to said heating image and reference image. The method further includes measuring the magnetic field changes caused by the position changes of the ultrasonic transducer of said high-intensity focused ultrasound device, and then compensating for the temperature changes according to said magnetic field changes. The present invention can significantly reduce the temperature errors caused by the position changes of the ultrasonic transducer. | 12-01-2011 |
| 20120086450 | ENHANCED SECURITY PORTAL WITH MULTIPLE SENSORS - A system and method for detecting objects foreign to a human body. The system including a thermal detector configured to obtain thermal imaging data, a quadrapole resonance (QR) device configured to transmit an excitation signal and receive a resulting signal emanating from a material excited by the excitation signal, and a controller configured to determine if a foreign object is present based on the thermal imaging data and the excitation signal. | 04-12-2012 |
| 20130002250 | QUANTITATIVE NMR CLINICAL ANALYZERS WITH AUTOMATIC NMR TEMPERATURE SENSITIVITY COMPENSATION THAT ACCOMMODATE LARGE AMBIENT OPERATIONAL TEMPERATURE RANGES - NMR analyzers and associated methods, circuits and computer program products that allow NMR operation in fluctuating ambient temperature environments of at least +/−5 degrees F. in a relatively large operating temperature range, typically between about 60-85 degrees F.) with the ability to still generate accurate quantitative measurements using an electronically applied temperature sensitivity adjustment based on an a priori model of temperature sensitivity and a detected temperature proximate the NMR signal acquisition (e.g., scan). The clinical NMR analyzers can be remotely accessed to evaluate linearity and temperature compensation adjustments. | 01-03-2013 |
| 20140191754 | METHOD FOR DETERMINING THE EFFECT OF A MEDICAL DEVICE ON THE IMAGE DATA OF A MAGNETIC RESONANCE EXAMINATION AND/OR EXAMINATION SUBJECT EXAMINED BY MEANS OF MAGNETIC RESONANCE - In a method and magnetic resonance apparatus for determining at least one datum providing a measure for the effect of at least one medical device that is to be connected to, or is connected to, an examination subject in the scope of a magnetic resonance examination that is to be executed, or has been executed, on the image data that are to be obtained, or have been obtained, in the scope of a magnetic resonance examination that is to be executed, or has been executed, and/or on the examination subject that is to be examined, or has been examined, in the scope of the magnetic resonance examination that is to be executed, or has been executed, the at least one datum is determined by at least one magnetic resonance thermometric measurement. | 07-10-2014 |
| 20140285197 | METHOD AND MAGNETIC RESONANCE SYSTEM FOR MAGNETIC RESONANCE THERMOMETRY - In magnetic resonance (MR) thermometry, first and second magnetic resonance data that are acquired sequentially, from which a phase shift is determined between a measurement phase and a reference phase. In a first region of an examined person, the measurement phase is determined from the second magnetic resonance data and the reference phase is determined from the first magnetic resonance data. In a second region of the examined person, both the reference phase and measurement phase are determined from the second magnetic resonance data. Techniques for reference-based magnetic resonance thermometry and reference-free magnetic resonance thermometry can be applied. | 09-25-2014 |
