Matches 101 - 150 out of 329 < 1 2 3 4 5 6 7 >
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6690962 Process for graphic visualization and diagnosis of thrombi by means of nuclear spin tomography with use of particulate contrast media  
The invention relates to a new process for graphic visualization and diagnosis of thrombi as well as the use of particle suspensions for the production of contrast media for the visualization of...
6671536 Magnetic resonance angiography using floating table projection imaging  
A 3D projection reconstruction pulse sequence is employed to acquire CEMRA data as the subject is continuously moved through the field of view of the MRI system. The acquired k-space data is phase...
6666047 High pressure polarizer for hyperpolarizing the nuclear spin of noble gases  
The invention relates to a polarizer for noble gases comprising a glass sample cell and a pressure chanter in which the sample cell is located. High pressure and accompanying broadband or...
6667008 Hyperpolarized noble gas extraction methods, masking methods, and associated transport containers  
Methods of extracting and removing hyperpolarized gas from a container include introducing an extraction fluid into the container to force the hyperpolarized gas out of an exit port. The...
6662037 Method and apparatus to improve myocardial infarction detection with blood pool signal suppression  
A method and apparatus-are disclosed for achieving suppression of blood pool signal to detect myocardial infarction using MR technology. An RF pulse sequence is applied that includes a notched...
6662038 Method and apparatus for imaging abdominal aorta and aortic aneurysms  
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...
6647283 Method for examining a living subject by non-invasive imaging employing a contrast agent  
In a method for examining a living subject with an imaging method making use of the concentration of a contrast agent having a physical property that is identifiable with the imaging method in a...
6643534 Optimal imaging of the peripheral vasculature with test bolus tracking  
A system and method for optimally imaging the peripheral vasculature is disclosed which includes defining a given number of scan stations along a patient's peripheral vasculature and initially...
6639211 Contrast-enhanced MRA including an effective zero-latency method of bolus detection  
To generate a magnetic resonance angiograph, a patient is injected with a contrast-enhancing agent ( 210 ). An ellipsoidal central portion of k-space ( 300 ) and a first surrounding region ( 310 )...
6603992 Method and system for synchronizing magnetic resonance image acquisition to the arrival of a signal-enhancing contrast agent  
A method of synchronizing initiation of a magnetic resonance image (MRI) acquisition to the arrival of a contrast agent in a structure of interest, such as an artery, includes repeatedly performing...
6597936 Focused point oversampling for temporally and spatially resolving dynamic studies  
A region of interest of a subject is disposed in an imaging region ( 10 ) of a magnetic resonance imaging apparatus. A contrast material ( 70 ) is injected into the subject. An operator initiates a...
6597937 Self-adaptive tracking and phase encoding during data collection for contrast-enhanced MRA and dynamic agent uptake studies  
A magnetic resonance imaging method includes acquiring a baseline magnetic resonance image of a region of interest in the absence of a contrast agent and simulating an increase in image intensity...
6597938 System for assistance of parameter determination and diagnosis in MRI dynamic uptake studies  
A parameter compilation memory ( 62, 114 ) stores patient physiological information and contrast agent arrival or uptake times (t D , t A , t V ) from past patients. A triggering or synchronizing...
6593144 Magnetic resonance imaging using hyperpolarized noble gases  
A method of imaging a spatial distribution of a noble gas by nuclear magnetic resonance spectrometry includes detecting a spatial distribution of at least one noble gas by NMR spectrometry and...
6587708 Method for coherent steady-state imaging of constant-velocity flowing fluids  
An imaging apparatus particularly suitable for nuclear magnetic imaging has a transmitter coil generating a plurality a first rf pulse and a second rf pulse having a repetition time therebetween. A...
6580937 Method for optimal imaging of the peripheral vasculature emphasizing distal arterial visualization in a multi-station examination  
A method and apparatus are disclosed for creating peripheral MR angiographic images and performing an MRA examination using an intravascular contrast agent in which MR data acquisition is optimized...
6576220 Non-invasive methods for surgery in the vasculature  
Novel methods of non-invasive intravascular surgery are disclosed, which include the intravascular administration of a composition comprising gas or gaseous precursor filled vesicles, followed by...
6577887 Apparatus and method for improving diagnoses  
The apparatus and method alters the intravenous delivery of pharmaceuticals to enhance imaging of the vasculature of an animal. The apparatus includes a pressure-inducing component that is sized to...
6574496 Magnetic resonance imaging  
A method of magnetic resonance investigation of a sample by (i) reacting ortho-deuterium enriched hydrogen with a hydrogenatable MR imaging agent precursor to produce a hydrogenated (i.e....
6574495 Para-hydrogen labelled agents and their use in magnetic resonance imaging  
The invention provides a method of magnetic resonance investigation of a sample, said method comprising: (i) reacting para-hydrogen enriched hydrogen with a hydrogenatable MR imaging agent...
6574497 MRI medical device markers utilizing fluorine-19  
Medical devices that incorporate compounds containing fluorine-19 materials for use as contrast agents and passive markers in interventional magnetic resonance angiography. The device may be a...
6567686 Method for improving lung delivery of pharmaceutical aerosols  
Disclosure is made of a method employing real-time imaging techniques such as Magnetic Resonance Imaging in order to investigate the effect of air way structures or administration and respiratory...
6567689 Methods and chemical preparations for time-limited marking of biopsy sites  
Detectable markers that may be introduced into a cavity created by removal of a biopsy specimen to mark the location of the biopsy site so that it may be located in a subsequent medical/surgical...
6566875 Portable hyperpolarized gas monitoring systems, computer program products, and related methods using NMR and/or MRI during transport  
A system, method, and computer program products and associated apparatus, to monitor and determine the polarization level of a quantity of hyperpolarized gas during transport. A portable device is...
6554792 Suspension device and method  
A device and method for providing a suspended agent such as a contrast agent without mechanical resuspension. A volume of agent is divided into sub-volumes in a network of tubes, cells, sponges,...
6556856 Dual resolution acquisition of magnetic resonance angiography data with vessel segmentation  
A magnetic resonance angiogram (MRA) is acquired using a contrast enhancement method in which a series of low resolution NMR images are rapidly acquired during a time resolved phase of the...
6553249 Diagnostic method and diagnostic means used in delivering a medicament to a patient  
The present invention relates to a diagnostic method used to indicate the migration of a medicament through the digestive apparatus and resorption during this migration, with the use of a negative...
6546275 Determination of the arterial input function in dynamic contrast-enhanced MRI  
A contrast-enhanced MRI time course study of the brain is performed and images are produced which indicate hemodynamic parameters such as cerebral blood flow (CBF), cerebral blood volume (CBV) and...
6542769 Imaging system for obtaining quantative perfusion indices  
A bolus containing optical and MRI contrast agents is administered to a patient for determining quantitative perfusion indices from perfusion weighted magnetic resonance imaging analysis (PWI). The...
6532380 Image guidance for coronary stent deployment  
A method for image guidance of coronary stent deployment using radiopaque markers and the image processing technique of moving layer decomposition. The radiopaque markers are attached to guidewires...
6519489 Clinical method for measuring cerebrospinal fluid perfusion by magnetic resonance tomography  
In a method for analyzing cerebrospinal fluid perfusion by magnetic resonance imaging, a contrast agent is directing injected into volumes containing cerebrospinal fluid and a magnetic resonance...
6505064 Diagnostic imaging systems and methods employing temporally resolved intensity tracing  
A diagnostic imaging system ( 100, 200 ) and method generates a plurality of temporally resolved volume image representations ( 130, 132, . . . , 134 ). A time course projection processor ( 140,...
6493569 Method and apparatus using post contrast-enhanced steady-state free precession in MR imaging  
A system and method are disclosed that use the steady-state free precessing (SSFP) technique for MR imaging to allow the acquisition of MR angiography images in which the acquisition is not time...
6493571 Rapid magnetic resonance imaging and magnetic resonance angiography of multiple anatomical territories  
A procedure and apparatus are provided which allow rapid positional change in the patient centering in order to facilitate the imaging of blood vessels in a series of different views. This...
6493570 Method for improved imaging and photodynamic therapy  
The present invention is directed to an apparatus and method of imaging and treatment using at least one photodynamic therapy (“PDT”) agent. In particular, the apparatus and method is for...
6487435 Magnetic resonance angiography using undersampled 3D projection imaging  
A 3D projection reconstruction pulse sequence is employed to acquire CEMRA images. In one application of the invention an undersampled, high resolution abdominal CEMRA image is acquired in a single...
6466814 Method of magnetic resonance investigation  
The present invention provides a method of magnetic resonance investigation of a sample, preferably of a human or non-human animal body. The method comprises the step of ex vivo polarization of a...
6466812 MR method for generating enhanced nuclear magnetization  
The invention relates to an MR method in which the nuclear magnetization is enhanced under the influence of a first steady magnetic field and a second steady magnetic field acts on the nuclei...
6463317 Device and method for the endovascular treatment of aneurysms  
This invention provides a method and a device for treating hemodynamically significant aneurysms especially in the intracranial and extracranial circulation regions using either X-ray fluoroscopy...
6461586 Method of magnetic resonance focused surgical and therapeutic ultrasound  
A novel method for the controlled delivery of therapeutic compounds to a region of a patient, using magnetic resonance focused therapeutic ultrasound, is disclosed.
6453188 Method of magnetic resonance imaging  
The invention relates to a method of magnetic imaging (MR) of a living sample comprising the steps of hyperpolarizing a hyperpolarizable gas ex-vivo and transferring the nuclear polarization from...
6445945 Non-invasive detection of endothelial dysfunction by blood flow measurement in opposed limbs using tracer injection  
Endothelial dysfunction is a known indicator of cornary artery disease. Endothelial dysfunction is detected by measuring tracer presence in arteries following the release of blood flow into the...
6442415 Contrast-enhanced coronary artery and coronary artery bypass graft imaging using an aortic root catheter injection with either magnetic resonance angiography or computed tomographic angiography  
A three-dimensional method of imaging the coronary arteries and coronary artery bypass grafts using a catheter contrast enhanced technique. The method involves the percutaneous placement of a...
6434413 Shifting sampling window and interleaves sparse K-space data acquisition for improved temporal resolution  
A method of magnetic resonance imaging includes subjecting a region of a patient being imaged to magnetic resonance imaging pulse sequences thereby generating magnetic resonance echoes emanating...
6425864 Method and apparatus for optimal imaging of the peripheral vasculature  
A system and method for optimally imaging the peripheral vasculature is disclosed which includes defining a given number of scan stations along a patient's peripheral vasculature and initially...
6411837 Method for chronologically high-resolution magnetic resonance tomography of the female breast  
In a method for the chronologically high-resolution magnetic resonance tomography of the female breast, a number of chronologically successive images of the breast are produced in a first slice...
6397097 Method and control apparatus for tracking a contrast agent in an examination subject using a medical imaging device  
In a method and control apparatus for tracking a contrast agent using an imaging medical device a test bolus of a contrast agent is initially injected into an examination subject, followed by an...
6389304 Method of and device for imaging an object by means of magnetic resonance  
The invention relates to a method of imaging perfusion parameters of, for example blood in a volume of the brain in the head of a body by means of magnetic resonance, in which a contrast medium is...
6381486 Magnetic resonance angiography with vessel segmentation  
A magnetic resonance angiogram (MRA) is acquired using a contrast enhancement method in which a series of low resolution NMR images are rapidly acquired during a time resolved phase of the...
6377835 Method for separating arteries and veins in 3D MR angiographic images using correlation analysis  
In a 3D magnetic resonance angiography (MRA) method, a region of interest, containing a major pulmonary vessel, is defined in an examination subject, and the subject is injected with a contrast...
Matches 101 - 150 out of 329 < 1 2 3 4 5 6 7 >