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7542793 MR-guided breast tumor ablation and temperature imaging system  
An MRI system is employed to aim an ultrasonic transducer at tissues to be treated and to produce images which enable the treatment of the tissues to be monitored. A pulse sequence is used which...
7359745 Method to correct magnetic field/phase variations in proton resonance frequency shift thermometry in magnetic resonance imaging  
PRF shift MRI data is acquired. The PRF shift MRI data may include signals affected by both a desired PRF shift and an undesired PRF shift. Thus, example systems and methods describe manipulating...
7297907 Means and method of maintaining a constant temperature in the magnetic assembly of a magnetic resonance device  
The present invention discloses a novel active insulation device and method for thermally shielding an external body from temperature fluctuations of a contained body. The method comprising...
7251519 MR-method for the in vivo measurement of temperature or pH-value by means of a hyperpolarised contrast agent  
The present invention provides a method of MR investigation of a sample, said method comprising: (i) nuclear spin polarizing a high T1 MR imaging agent which contains in its molecular structure at...
7246939 Measurement of thermal diffusivity, thermal conductivity, specific heat, specific absorption rate, thermal power, heat transfer coefficient, heat of reaction and membrane permeability by nuclear magnetic resonance  
This invention utilizes the nuclear magnetic resonance imaging and spectroscopy to experimentally measure thermal diffusivity, thermal conductivity, specific heat, specific absorption rate, thermal...
7217245 Noninvasive methods for detecting abnormalities in a subject such as disease or dysfunction  
The systems, methods and apparatus of the present invention comprise noninvasive methods of measuring temperature changes and rates of temperature change in selected body tissues and fluids as a...
7209778 Embedded thermal control system for high field MR scanners  
A thermal control system having an initial bore condition and a thermal boundary condition for an MRI includes a thermal controller adapted to set at least one dynamic limit on power input into an...
7123010 Magnetic resonance apparatus and operation method for hyperthermic treatment  
In a magnetic resonance system and operating method, antenna elements in an antenna array are disposed around an examination volume, and each antenna element has a separate transmission channel and...
6768917 Magnetic resonance imaging method and system  
A method of forming a magnetic resonance image involves separate measurement of the position of a measuring site. The magnetic resonance image is corrected on the basis of the measured position of...
6757417 Method and apparatus for defining a three-dimensional imaging section  
A method of defining a three-dimensional imaging section which comprises displaying a plurality of localizer images of the structure of interest, acquiring operator inputs that designate regions on...
6640130 Integrated imaging apparatus  
The invention is directed to imaging methods for performing real-time or near real-time assessment and monitoring. Embodiments of these methods are useful in a plurality of settings including...
6618608 Thermal imaging of fat and muscle using a simultaneous phase and magnitude double echo sequence  
A method for magnetic resonance imaging includes applying a first two echo gradient echo sequence to a tissue region, the first two echo sequence generating a first echo and a subsequent second...
6615069 Magnetic resonance imaging device  
An MRI apparatus and method in which image data is produced using NMR signals obtained in plural measurements performed at different times respectively. Data is calculated indicating temperature...
6430429 Magnetic resonance imaging system with an interventional instrument  
A magnetic resonance imaging (MRI) system is provided with an interventional instrument with an indicator element which influences, for example locally disturbs, the magnetic resonance image. The...
6418337 MRI guided hyperthermia surgery  
An MRI guided surgical apparatus includes a heat source formed by a laser and an optical fiber carrying the heat energy into a part to be coagulated by hyperthermia with an end reflector to direct...
6377834 Real time in vivo measurement of temperature changes with contrast enhanced NMR imaging  
NMR images indicative of thermal changes in tissues undergoing therapy are produced using a gradient-recalled echo pulse sequence. Prior to therapy a contrast agent which shortens spin T 1 ...
6280384 Intracorporeally introducible suspension of ferromagnetic particles and method using same for spatially resolved body temperature monitoring  
In a method for spatially resolved temperature monitoring in an examination subject, a suspension of ferromagnetic microparticles is intracorporeally introduced into the body Curie temperature of...
6246896 MRI guided ablation system  
An MRI system acquires NMR tracking data from a tracking coil imbedded in an ablation device which is guided by a physician using real time anatomic images produced from image data acquired by the...
6194899 Temperature monitoring method, temperature monitoring apparatus and magnetic resonance apparatus  
An absolute temperature measuring pulse sequence is executed and, subsequently, a relative temperature measuring pulse sequence is repeatedly executed. Since while a relative temperature can be...
6188923 Method and apparatus for local heating and global monitoring of a tissue  
A method and an apparatus for local heating and global monitoring of a tissue disposed in an imaging device, monitored by the imaging device and substantially simultaneously heated by focused...
6100690 Radio frequency coil for magnetic resonance imaging apparatus  
In a magnetic resonance imaging apparatus being medical diagnostic equipment for understanding the internal structure of a human body, a radio frequency coil for a magnetic resonance imaging...
6091242 Magnetic reasonance diagnosis apparatus  
An inversion pulse is applied to the subject in a static magnetic field. An excitation pulse is applied after a delay time depending on the time constant of the longitudinal relaxation of the spins...
6067371 Method and system for non-invasive temperature mapping of tissue  
A method and system for mapping temperature from image data. The method includes the steps of: receiving an image of tissue comprised of multiple pixels, segregating the image into groups of pixels...
6064206 Method of and device for determining a temperature distribution in an object by means of magnetic resonance  
The invention relates to a method of determining, utilizing magnetic resonance, a temperature distribution of a part of an object which is arranged in a substantially uniform steady magnetic field,...
6032068 Non-invasive measurement of frozen tissue temperature using MRI signal  
Temperature in frozen tissue can be measured from magnetic resonance signals from the frozen tissue based on spin-spin relaxation time (T2) or based on relative intensity of the magnetic resonance...
6028429 Composite MRI antenna with reduced stray capacitance  
An antenna system for a magnetic resonance imaging apparatus has an active coil connected between a transmitter or receiver and ground and also has an isolated loop coil which is not conductively...
6011392 Method for reducing Maxwell term artifacts in fast spin echo MR images  
Fast spin echo pulse sequences are adjusted to reduce, or eliminate image artifacts caused by Maxwell terms arising from the linear imaging gradients. The waveforms of the slice selection, phase...
6008644 Nuclear Polarization Enhanced Nuclear Magnetic Resonance Imaaging  
This invention relates to a method of electron spin resonance enhanced magnetic resonance imaging which relies on ex vivo dynamic nuclear polarisation of an MR imaging agent.
5998998 Gradient coil for NMR devices  
A gradient coil (1) to generate switched magnetic field gradients in an nuclear spin resonance (NMR) device consisting of one or several current paths (a, b) following windings and being arranged...
5944663 Apparatus for treatment with acoustic waves  
In an apparatus for treatment of a subject with acoustic waves, a spatial allocation, required for the treatment of the patient and a source of acoustic waves relative to each other is effected by...
5926022 Method for flow compensating a multi-shot echo-planar MRI pulse sequence  
A bipolar, phase-encoding, pre-phaser pulse is employed in each shot of a multi-shot EPI pulse sequence to smooth the phase-encoding gradient first moment throughout the scan. The first moment of...
5916161 Magnetic resonance imaging apparatus with temperature measurement function  
A magnetic resonance imaging apparatus capable of measuring a temperature increase due to an application of RF magnetic fields for data acquisition purpose, and notifying an information on the...
5906584 Device for the invasive thermometrical measurement and for the introduction of a medicament for surface and deep hyperthermia treatments  
A device for invasive temperature measurements during surface and deep hyperthermia treatments. The device includes a needle-pin element and a catheter of a biocompatible material semi-rigid sheath...
5753207 Use of paramagnetic compounds to measure temperature and pH in vivo  
A method for measuring temperature and/or pH in vivo using paramagnetic compounds, e.g., lanthanide complexes, in conjunction with NMR has been developed. The chemical shift of the nuclear spin in...
5730134 System to monitor temperature near an invasive device during magnetic resonance procedures  
A temperature monitoring system employs a temperature detection means incorporated into an invasive device intended to be placed within a body during a magnetic resonance procedure. The temperature...
5711300 Real time in vivo measurement of temperature changes with NMR imaging  
NMR images indicative of thermal changes in tissues undergoing therapy are produced using a gradient-recalled double-echo pulse sequence. A reference phase image is produced using a short echo time...
5706810 Magnetic resonance imaging assisted cryosurgery  
Methods and apparatus for magnetic resonance imaging (MRI) assisted cryosurgery. Optimal probe placements and cooling parameters are calculated prior to cryosurgery using MRI data. A MRI compatible...
5553618 Method and apparatus for ultrasound medical treatment  
An ultrasound medical treatment system capable of determining the hot spot at high spatial resolution, and preventing the displacement of the hot spot from the focal point. In the system, the...
5492122 Magnetic resonance guided hyperthermia  
A hyperthermia treatment apparatus includes an annular radio frequency (RF) antenna array with bolus that is compatible with a magnetic resonance imaging (MRI) machine. Antenna elements polarized...
5485839 Method and apparatus for ultrasonic wave medical treatment using computed tomography  
An ultrasonic wave medical treatment in which the position of the focal point of the ultrasonic waves, the temperature in a vicinity of the object to be treated, and the effect of the treatment can...
5441532 Adaptive focusing and nulling hyperthermia annular and monopole phased array applicators  
An R.F. hyperthermia phased array applicator uses adaptive nulling and focusing with non-invasive electric field probes to control the electric field intensity at selected positions in and around a...
5397562 Use of .sup.19 F magnetic resonance to non-invasively assess pO.sub.2 and temperature in vivo  
Oxygen tension of tissue in a living subject may be determined non-invasively by a method which involves: administering to a living mammalian subject a biologically compatible perfluorocarbon...
5378987 Method and apparatus for non-invasive measurement of temperature distribution within target body using nuclear magnetic resonance imaging  
A non-invasive measurement of a temperature distribution within a target body using a nuclear magnetic resonance imaging, capable of realizing a high speed and a high precision measurement, and...
5368031 Magnetic resonance surgery using heat waves produced with a laser fiber  
Surgery is performed with pulsed heat means that selectively destroys tissue in a region within a patient. The size of the region destroyed is dependent upon the frequency of the pulses of the...
5327884 Heat surgery system monitored by real-time magnetic resonance temperature profiling  
Surgery is performed with a pulsed heat-producing device that selectively heats a region in a specific tissue within a patient destroying the tissue. The pulsed heat-producing device may be a...
5284144 Apparatus for hyperthermia treatment of cancer  
A hyperthermia applicator/MRI probe assembly for hyperthermia treatment of a subject. The assembly includes a hyperthermia applicator for heating target regions of a subject and a MRI probe which...
5275165 Magnetic resonance guided ultrasound therapy system with inclined track to move transducers in a small vertical space  
A magnetic resonance (MR) surgery system facilitates surgery with a focussed ultrasound transducer that selectively destroys tissue in a region within a subject. The focussed energy transducer...
5263482 Thermographic imaging  
There is provided a method of and apparatus for thermographic imaging involving the use in electron spin resonance enhanced magnetic resonance imaging (ESREMRI) of a paramagnetic contrast agent...
5247935 Magnetic resonance guided focussed ultrasound surgery  
A magnetic resonance surgery system facilitates performance of surgery with a focussed ultrasound transducer that selectively destroys tissue in a region within a subject. The focussed ultrasound...
5209233 Temperature sensing and control system for cardiac monitoring electrodes  
A cardiac electrode (40) has a plug (48) which is frictionally received in a socket (50) of an electrical lead (56). An impedance (54) is connected in series between the electrical lead and the...
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