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7613496 Magnetic resonance imaging apparatus and magnetic resonance imaging method  
A magnetic resonance imaging apparatus includes a blood flow velocity acquiring unit that acquires a flow velocity of the blood flow of an object, a capturing condition setting unit that, on the...
7606610 Rapid three-dimensional magnetic resonance angiography  
A method for imaging a patient. An apparatus for imaging a patient including a magnetic resonance imager having a controller and a memory in communication with the controller. The controller causes...
7587233 Velocity-selective arterial spin labeling without spatial selectivity  
Techniques for providing velocity-selective magnetic arterial spin labeling in magnetic resonance imaging (MRI) without spatial selectivity. In one implementation, an RF pulse train is applied to...
7583992 Magnetic resonance angiography with automated vessel segmentation  
A magnetic resonance angiogram (MRA) is acquired using a contrast enhancement method in which a series of NMR images are rapidly acquired during a time resolved phase of the examination in which...
7580737 Method and apparatus for determining treatment for stroke  
A method and apparatus for evaluating acute stroke patients and for determining whether a stroke patient will benefit from the use of thrombolysis therapy includes obtaining measurements of the...
7570985 Method and apparatus for magnetic resonance imaging using contrast agent  
Monitor scans are performed before imaging scans with respect to a patient injected with a contrast agent. Magnetic resonance images of a plurality of slices of the patient are acquired, usually...
7561909 MRI navigator methods and systems  
Navigator methods are disclosed that are based on detecting a flow-sensitive signal within a subject, and using the position of the signal to track subject motion between imaging sequences. In a...
7558612 Motion compensated spiral FISP MRI  
Real-time imaging of a moving object such as the heart uses fast imaging with steady precession (FISP) traversing spirals in k-space. After flipping nuclear spins in the object within a slice to be...
7557577 Water-soluble paramagnetic substance reducing the relaxation time of the coolant in an MRI system  
The invention relates to the use of a water-soluble paramagnetic substance, in particular a magnetic resonance contrast medium, to reduce the magnetic resonance relaxation time of a coolant for...
7545967 System and method for generating composite subtraction images for magnetic resonance imaging  
In time-resolved contrast-enhanced magnetic resonance angiography, a measure quantifying image quality provides a basis for generating a linear filtered composite image by facilitating selection of...
7545142 Arterial spin labeling with pulsed radio frequency sequences  
In one aspect, a method for imaging fluid flow and/or perfusion using spin labeling is provided. The method comprises applying a first magnetic gradient sequence at least to a labeling region,...
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...
7512435 Delay-compensated calculation of tissue blood flow  
Methods for computing perfusion parameters are described. The methods are typically used to analyze magnetic resonance (MR) and other image data and to calculate tissue perfusion parameters such as...
7486072 Parallel multiple coil MR scanning method and MRI apparatus with flow compensation in a calibration scan including a calibration of a coil sensitivity of each coil  
The present invention provides an MR scanning method and an MRI apparatus for decreasing the artifacts while improving the signal from within the blood vessels in the parallel imaging. In the...
7480525 Positive contrast MRI using positive and negative field inhomogeneity  
The acquisition of multiple images at slightly different time shifts from the spin echo (or from TE=0 for gradient echo sequences), allows the separation of on-resonance spins from off-resonance...
7477929 Method for forecasting the contrast medium flow in a living body  
A method is disclosed for forecasting the contrast medium flow in a living body, in particular in a patient, in which a defined test bolus with a contrast medium is injected, preferably...
7467006 Magnetic resonance imaging system and contrast-enhanced angiography  
An MRI system capable of acquiring a high-quality blood vessel image even during a measuring period other than at an injected contrast medium concentration peak by always picking up an image under...
7467005 Method and apparatus for non-invasively measuring blood flow and for acquiring and processing an ECG signal  
The flow of blood in a vessel (G) in a living being (P) which is exposed to a magnetic field (B) is determined by measuring the potential difference (ΔV) between at least two points (P 1 , P 2 )...
7416542 Open circuit gravity-assisted uroflowmeter  
An open circuit gravity-assisted uroflowmeter has a urine collector having a generally open inlet in fluid communication with a sensing passage located at a lower elevation than the inlet, the...
7412279 Systems and methods for targeted magnetic resonance imaging of the vascular system  
This invention relates to MRI-based methods and systems useful for diagnosing and clinically assessing the presence, location, and size of cardiovascular disease-associated stationary targets,...
7412277 Multi-slice MR data acquisition in successive heartbeats with black blood contrast  
The invention includes a technique for efficient multi-slice image acquisition with black blood contrast in cardiac imaging such that MR data is acquired in each R-R interval of a cardiac cycle....
7403883 Three-dimensional in-vitro spinal models and methods of analyzing substance distribution therein  
An in-vitro model apparatus of a human spine and methods for detecting and analyzing substance distribution patterns therein. In one embodiment, the model apparatus includes a column body defining...
7403810 Time resolved contrast-enhanced MR projection imaging of the coronary arteries with intravenous contrast injection  
In a method and apparatus for contrast-enhanced magnetic resonance (MR) angiography of the right coronary artery of a patient, a bolus of MR contrast agent is selected to have a size that will...
7369888 Multi-slice cerebral blood flow imaging with continuous arterial spin labeling MRI  
This invention is a method for multi-slice CBF imaging using continuous arterial spin labeling (CASL) with an amplitude modulated control which is both highly effective at controlling for off...
7369887 Rapid multislice black blood double-inversion recovery technique for blood vessel imaging  
DIR imaging of blood vessels by administering a series of DIR preparation pulse modules at a repetition interval short enough that at least two DIR preparation pulse modules generally occur within...
7368910 Dual gradient echo pulse sequence using interleaved spiral-out spiral-in k-space trajectories  
Measurements of functional, hemographic, and blood flow parameters use a multiple echo or spin echo gradient pulse sequence whereby an early echo is acquired near the beginning of the pulse...
7346383 Method for acquiring MRI data from variable fields of view during continuous table motion  
MRA data is acquired from a large region of interest by translating the patient through the bore of the MRI system as a three-dimensional MRA data set are acquired. The pulse sequence is altered...
7343193 Background suppression method for time-resolved magnetic resonance angiography  
A 3D projection reconstruction pulse sequence is employed during a CEMRA dynamic study to acquire a time course series of k-space data sets. Signals from non-vascular voxels are suppressed by...
7336375 Wireless methods and systems for three-dimensional non-contact shape sensing  
Systems for acquiring an approximation of the surface geometry of a 3-dimensional object include a self-powered wireless, non-contact optical scanner, the location and orientation of which may be...
7333848 Method and system for evaluating vertebrobasilar disease  
A method and system are disclosed for evaluating symptomatic VBD which uses quantitative hemodynamic assessment in order to identify patients at high risk for stroke and provide appropriate...
7328056 Magnetic resonance method and apparatus for classifying an atheroma  
In a method and apparatus for classifying plaque in a blood vessel of a living subject using magnetic resonance imaging, a first magnetic resonance image is produced with a first intensity...
7328054 Perfusion magnetic resonance imaging using encoded RF tagging pulses  
A perfusion image is produced by acquiring a series of time course MR images from an imaging slice. During the acquisition spins flowing into the slice are repeatedly tagged with an RF tagging...
7317940 MRT apparatus, method and computer program product for determining the speed of a flowing medium  
In a method for automatic determination of the actual speed interval of a flowing medium in flow measurements in magnetic resonance imaging, an overview image (localizer) is acquired displayed on a...
7315756 Multi-slice double inversion-recovery black-blood imaging with simultaneous slice re-inversion  
A multi-slice double inversion recovery (DIR) pulse sequence with read out of a signal for imaging successive slices implemented on a magnetic resonance image scanner. In the method, when the DIR...
7313428 Method and apparatus for magnetic resonance arteriography using contrast agents  
The present invention is a technique of, and system for, imaging vascular anatomy over distance considerably greater than the maximum practical field of view of a magnetic resonance imaging system...
7310548 Method of magnetic resonance perfusion imaging  
The present invention relates to a method of perfusion imaging comprising: performing a first magnetic resonance data acquisition (A) at a first sensitivity (b) value, performing a set of at least...
7295006 Method for measuring nuclear magnetic resonance longitudinal axis relaxation time of blood and apparatus using the same  
Disclosed are a method and apparatus for accurately measuring nuclear magnetic resonance (NMR) longitudinal axis relaxation time by minimizing the influence of the amount of blood. The method...
7292032 Method and system of enhanced phase suppression for phase-contrast MR imaging  
An automated image processing technique is disclosed that evaluates pixels of a phase-difference image to determine those pixels corresponding to inflowing phase data and background phase data....
7254436 Dynamic magnetic resonance angiography  
A method for creating a magnetic resonance angiography (MRA) image including the steps of acquiring a magnetic resonance image in which a predetermined slice is excited using a train of...
7221973 Magnetic resonance tomography method and apparatus with motion correction  
In a magnetic resonance tomography apparatus and method with motion correction in an angiography examination with magnetic resonance-monitored vessel intervention, a contrast agent-supported...
7209777 Method and apparatus for automated tracking of non-linear vessel movement using MR imaging  
A system and method is disclosed for tracking a moving object using magnetic resonance imaging. The technique includes acquiring a scout image scan having a number of image frames and extracting...
7206628 Method and apparatus for improving the vessel/tissue contrast in time-of-flight angiography of a magnetic resonance tomography measurement  
In a method and apparatus for improving the vessel/tissue contrast in time-of-flight angiography with a magnetic resonance tomography measurement, a sequence of radiofrequency excitation pulses is...
7167740 Measuring method in magnetic resonance imaging device and magnetic resonance imaging device  
In a measuring space of the object ( 1 ), an essential measurement region ( 41, 61, 71, 81, 111, 131 ) having a center region of the measuring space and a plurality of peripheral measurement...
7110806 Method for imaging an artery using a magnetic resonance contrast agent  
The present invention is a technique and apparatus for acquiring anatomic information used in diagnosing and characterizing abdominal aortic aneurismal disease and the like. This technique provides...
7082326 Method of magnetic resonance imaging  
A method of magnetic resonance (MR) imaging of blood perfusion in vascularized organs of interest, e.g. the myocardium, the kidneys, the brain, the liver wherein a contrast agent composition...
7069068 Method for determining haemodynamic indices by use of tomographic data  
Haemodynamic indices of an organ or a part of tissue are determined from a time series of tomographic data obtained by means of Magnetic Resonance Imaging. Maps of indices are produced, being...
7047061 Method of localizing the myocardium of the heart and method of determining perfusion parameters thereof  
The invention relates to a method of deriving the myocardial region from one or more MR images. Left and right ventricle contours ( 1, 2 ) are determined. The thickness or width (D) of the...
7047060 Multiple preparatory excitations and readouts distributed over the cardiac cycle  
A magnetic resonance cardiac imaging method for imaging during a cardiac cycle interval includes monitoring an electrocardiographic signal ( 90 ) associated with the imaged heart for a first...
7035682 Magnetic resonance imaging method with a decay time function of sub-sampled acquisition data  
The degree of sub-sampling in magnetic resonance imaging is such that the ensuing acquisition time for receiving (echo) series of magnetic resonance signals due to an individual RF excitation is...
7027854 Magnetic resonance imaging utilizing a microcoil  
An interventional magnetic resonance method and apparatus utilizing a microcoil which enable localization of an interventional instrument by detecting magnetic resonance signals from the...
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