13 results about "Black blood" patented technology

The application relates to a blood vessel center line extraction method and device, computer equipment, a storage medium and a computer program product. An initial black blood image of a to-be-measured object is acquired, and the initial black blood image is input into a preset first segmentation model to obtain a first blood vessel segmentation image comprising at least one blood vessel segment. The center line of each blood vessel segment in the first blood vessel segmentation image is extracted to obtain a blood vessel center line image corresponding to the initial black blood image. The automatic extraction method can directly acquire the blood vessel center line from the black blood image, does not need to use a bright blood image corresponding to the black blood image, does not need to additionally acquire the bright blood image, and does not need to consider the quality problem of the bright blood image and the accuracy problem of registration. After the initial black blood image is acquired, the method in the embodiment can directly obtain the blood vessel center line image corresponding to the initial black blood image through identification and processing of the initial black blood image, and the extraction efficiency is high.

The application discloses a kind of iron agent enhanced whole body blood vessel multi-modal magnetic resonance imaging method, system, the method comprises: after target is divided into multiple scanning stations from head to foot, iron agent enhanced whole body blood vessel bright blood imaging is carried out;Automatic positioning whole body blood vessel stenosis and quantifying its stenosis degree, and output the scanning station and position range information of blood vessel stenosis region;Judge whether there is blood vessel stenosis region meeting condition;According to its spatial position information, guide MRI system examination bed to move for blood vessel stenosis region meeting condition, and carry out local black blood imaging with not less than the spatial range of blood vessel stenosis region;Blood vessel stenosis region exists in interval period and carries out local bright blood imaging to the scanning station, obtains blood vessel cavity structure image;Local bright blood imaging is registered with whole body blood vessel bright blood imaging, and the information transmission of blood vessel stenosis region is completed, and local inflammation imaging is carried out.The application realizes the multi-modal imaging evaluation of whole body blood vessel in clinically acceptable scanning time.

Title: DEVICE FOR IMAGING A PATIENT'S HEART AND ASSOCIATED SYSTEM Device for imaging a patient's heart, the heart comprising a myocardium, comprising at least one input interface, at least one processing unit, and at least one output interface, the at least one processing unit being configured to implement by computer a processing step comprising: generation of a first black-blood image from first black-blood signals, generation of a first white-blood image from first white-blood signals, generation of a second image of a type between white and black blood from second signals of said type, determination, from said first black-blood image, first white-blood image, and second image of said type, of first localization data for a myocardial lesion and second localization data for adipose tissue. Figure for the abstract: Fig. 2

Disclosed is a method of characterizing a cardiac lesion using an image comprising: a black blood image generated from signals acquired during black blood late gadolinium enhanced magnetic resonance acquisition (ACQ1); a bright blood image is generated from signals acquired during bright blood late gadolinium enhanced magnetic resonance acquisition, the bright blood acquisition step (ACQ2) being different from the inversion recovery sequence. The method comprises: computer segmenting the bright blood image to generate localization data defining a set of at least one wall of the cardiac muscle; the computer extracts the set of at least one wall characterizing a cardiac lesion from the set of at least one wall defining the myocardium from the positioning data of the set of at least one wall according to the black blood image and the positioning data.

The invention provides an intracranial atherosclerotic plaque progress early warning system and method based on multi-stage MRA image and multi-modal blood flow parameter fusion, and is applied to the technical field of medical data processing. The method comprises the following steps: on the basis of a patient baseline, a follow-up period MRA image and a black blood sequence magnetic resonance image, firstly obtaining blood vessel binary volume data through a blood vessel segmentation technology, and generating a blood vessel geometric model through curved surface construction and triangularization; and converting the target blood vessel into a surface model, processing and encrypting the narrow area by using gridding software to obtain a target blood vessel grid, and further obtaining whole-brain whole-brain hemodynamic parameters. Subsequently, a high-risk area is determined according to blood flow parameter characteristic values of an anatomical segment, a structured matrix is established, parameter change abnormity is compared, a plaque progress index is defined, after parameter differences are grouped and compared, a risk prediction model is established by fusing various types of information, and finally, a multi-dimensional visualization and quantification result is generated by combining three-dimensional blood vessel space information. And support is provided for early warning of the progress of the intracranial atherosclerotic

The invention relates to a method for acquiring signals by magnetic resonance for cardiac imaging, the method comprising an acquisition sequence (SE), which comprises:  acquiring signals comprising, during each pair consisting of two consecutive cardiac cycles, successive pairs:  acquiring black-blood signals from an area to be imaged of a heart of an individual by black-blood magnetic resonance with late gadolinium enhancement; and  acquiring white-blood signals from the area to be imaged by white-blood magnetic resonance with late gadolinium enhancement, the white-blood signals acquired during the successive pairs being acquired by implementing a relaxometry sequence.

The invention relates to a device for imaging the heart of a patient, the heart comprising a myocardium, the device comprising at least one input interface, at least one processing unit and at least one output interface, the at least one processing unit being configured to implement, by means of a computer, a processing step comprising: - generating a first dark-blood image from first dark-blood signals; - generating a first bright-blood image from first bright-blood signals; - generating a second image of either the bright blood or dark blood type from signals of said type; and – based on the first dark-blood image, the first bright-blood image, and the second image of the aforementioned type, determining first data for locating a myocardial lesion and second data for locating adipose tissue.

The invention relates to the technical field of medical image diagnosis, in particular to a black blood T2 weighted fast spin echo imaging method and system under a free breathing condition. According to the black blood imaging method based on reverse dual inversion recovery (RDIR) and single excitation fast spin echo (SS-FSE), artificial intelligence assisted compressed sensing (ACS) is introduced to improve the reconstruction quality. The slice selective reversal pulse is moved forward to the previous cardiac cycle, so that myocardial signal loss is effectively reduced; scanning time can be remarkably shortened and motion artifacts can be reduced by adopting single excitation. And in combination with the ACS, a high-resolution T2 weighted black blood image can be obtained under high and under-sampling conditions, and the method is particularly suitable for edema evaluation of children under free breathing.

This application relates to a magnetic resonance imaging method, a medical imaging scanning control method, and a medical imaging system. The method includes: acquiring a three-dimensional vascular image of an imaging object; the three-dimensional vascular image includes at least one of bright blood vessel images and dark blood vessel images; acquiring medical record information of the imaging object and / or other modalities of medical images of the imaging object; determining the location of a region of interest (ROI) in the three-dimensional vascular image based on the medical record information and / or other modalities of medical images, as well as the three-dimensional vascular image and a localization model; and scanning the imaging object based on the ROI location to determine a two-dimensional vascular image of the imaging object. Using the magnetic resonance imaging method provided in this application can improve the accuracy, consistency, and efficiency of locating the ROI, thereby improving the accuracy and efficiency of the determined two-dimensional vascular image of the imaging object.

The application discloses a kind of CTA black blood imaging method based on substance separation.It includes the following steps, step one: obtaining several images of human blood vessel CT enhancement;Obtain n space registered reference medical images, constitute n-dimensional gray space of substance distribution;Step two: in step one, the blood information on image is extracted by delineating the region of interest ROI in the vessel of image;Step three: for two different levels of energy image and ROI, find out the component without statistical difference with ROI area by using gray space distribution and suppress;Step four: the black blood image corresponding to the target suppression is obtained, and the vessel wall condition is highlighted.The application has the advantages of inhibiting blood signal, eliminating blood vessel pulsation artifact, reducing examination cost and shortening examination time.

A Method for reconstructing an image of a patient's heart from a magnetic resonance imaging device generating a magnetic field, includes acquisition of the electrical activity of the patient's heart; generation of an MRI sequence and acquisition of a 2D black blood image; generation of an MRI sequence and acquisition of a 2D bright blood image; application of a non-rigid registration algorithm to each subset of black blood images for each heart section; application of a non-rigid registration algorithm to each subset of bright blood images for each heart section; generation of a set of 2D images for each section plane, each image corresponding to a combination made between each pair of black blood and bright blood images.

The application relates to a black-blood cine imaging method, device and computer equipment. The method comprises the following steps: acquiring K-space data and a physiological signal of a target part; a K-space where the K-space data is located comprises a center region and a peripheral region, a sampling rate of the center region is greater than that of the peripheral region; according to a state of the physiological signal, the K-space data is subjected to rearrangement processing to obtain rearranged K-space data; and image reconstruction is performed on the rearranged K-space data to obtain a black-blood cine image of the target part. The method can improve the speed of black-blood cine imaging.

The invention belongs to the technical field of medical image processing, and discloses a silhouette black blood imaging method, system, equipment and medium based on spectrum-based data, and the method comprises the steps: collecting a computed tomography image of a human blood vessel to obtain corresponding spectrum-based data, and reconstructing and storing a single-level image and a virtual plain scanning image based on the spectrum-based data; the stored single-level image and the virtual plain-scan image are processed through the image silhouette technology, and black blood imaging is generated through image registration and silhouette merging operation. Spectral base data and the CT silhouette technology are combined, high-density blood flow signals in a blood vessel cavity can be removed, the display definition of the blood vessel wall is improved, and the blood vessel imaging quality is improved. Therefore, a more accurate image basis is provided for clinicians, and recognition and evaluation of vascular wall lesions are facilitated.