Patents Assigned to SYNTHETICMR AB
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Patent number: 11771364Abstract: A bone density estimating method, comprising: acquiring, by an MR scanning device, a magnetic resonance, MR, sequence of a body portion, wherein the MR sequence comprises quantitative information of the body portion; generating, by a processing circuit, an MR image of the body portion based on the MR sequence, wherein each voxel of the MR image represents a volume of the body portion; identifying, by the processing circuit, a part of the MR image representing a bone portion of the body portion; for a voxel of the identified part of the MR image, estimating a bone density of a volume of the bone portion represented by the voxel, based on a quantitative value of the voxel. The quantitative information of the body portion comprises a proton density.Type: GrantFiled: January 27, 2021Date of Patent: October 3, 2023Assignee: SYNTHETICMR AB (PUBL)Inventor: Marcel Warntjes
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Publication number: 20220233137Abstract: A bone density estimating method, comprising: acquiring, by an MR scanning device, a magnetic resonance, MR, sequence of a body portion, wherein the MR sequence comprises quantitative information of the body portion; generating, by a processing circuit, an MR image of the body portion based on the MR sequence, wherein each voxel of the MR image represents a volume of the body portion; identifying, by the processing circuit, a part of the MR image representing a bone portion of the body portion; for a voxel of the identified part of the MR image, estimating a bone density of a volume of the bone portion represented by the voxel, based on a quantitative value of the voxel. The quantitative information of the body portion comprises a proton density.Type: ApplicationFiled: January 27, 2021Publication date: July 28, 2022Applicant: SyntheticMR AB (publ)Inventor: Marcel WARNTJES
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Publication number: 20220133217Abstract: A method of visualizing a property of cartilage, comprising: generating, by a processing circuit, a plurality of slices, based on a magnetic resonance, MR, sequence of a portion comprising cartilage, wherein each slice represents a layer of the portion; for each slice, generating, by the processing circuit, a cartilage line representing cartilage of the slice; for the cartilage line of each slice, generating, by the processing circuit, an image column for visualizing a cartilage property of the cartilage of the slice; and generating, by the processing circuit, a two-dimensional, 2D, image for visualizing the cartilage property of the cartilage of the portion, based on the generated image columns.Type: ApplicationFiled: October 29, 2020Publication date: May 5, 2022Applicant: SyntheticMR AB (publ)Inventors: Marcel WARNTJES, Per WIDHOLM
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Publication number: 20210325499Abstract: A dynamic magnetic resonance angiography, MRA, method, comprising: acquiring, by an MR scanning device, a multi-contrast magnetic resonance, MR, sequence of a portion of a body; identifying, by a processing circuit, blood vessels of the portion by identifying blood of the portion based on predetermined characteristic of blood and the multi-contrast MR sequence; generating, by the processing circuit, a first MRA image frame and a second MRA image frame, based on the multi-contrast MR sequence, respectively visualising a first part and a second part of the identified blood vessels; generating, by the processing circuit, a dynamic MRA image for visualising a dynamic blood flow through a part of the portion, based on the first and second MRA image frame.Type: ApplicationFiled: April 15, 2020Publication date: October 21, 2021Applicant: SyntheticMR AB (publ)Inventor: Marcel Warntjes
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Patent number: 10073156Abstract: A magnetic resonance imaging apparatus and method simultaneously measure physical properties including relaxation rates, proton densities, and apparent diffusion coefficients of a subject. The apparatus and method use a single magnetic resonance acquisition of the subject in order to measure the physical properties.Type: GrantFiled: June 28, 2013Date of Patent: September 11, 2018Assignee: SyntheticMR ABInventor: Marcel Warntjes
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Patent number: 9993156Abstract: A computerized method of generating a map of myelin tissue of a brain is described. In addition sub-maps of different myelin contents can be imaged. The method uses a simulation model comprising at least two interacting tissue compartments.Type: GrantFiled: October 14, 2010Date of Patent: June 12, 2018Assignee: SyntheticMR ABInventor: Marcel Warntjes
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Patent number: 9618596Abstract: Magnetic resonance (MR) imaging methods and apparatus for simultaneous measurement of the physical properties R1 relaxation rate, R2 relaxation rate, proton density (PD), and apparent diffusion coefficient using a single magnetic resonance acquisition using a single gradient echo acquisition type. A method includes, from an MR scanner, obtaining at least three parallel, segmented gradient-echo acquisitions of a common acquisition type; in a computer, interleaving the at least three parallel, segmented gradient-echo acquisitions with a R1-sensitizing phase, a R2 sensitizing phase and a delay time; and in the computer, generating measures for R1 relaxation rate and R2 relaxation rate and PD from the at least three parallel, segmented gradient-echo acquisitions, thereby simultaneously estimating multiple physical parameters using the single gradient echo acquisition type.Type: GrantFiled: July 2, 2012Date of Patent: April 11, 2017Assignee: SyntheticMR ABInventor: Marcel Warntjes
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Publication number: 20150177350Abstract: Magnetic resonance imaging methods and apparatus for simultaneous measurement of the physical properties R1 and R2 relaxation rate, proton density, and apparent diffusion coefficient using a single magnetic resonance acquisition.Type: ApplicationFiled: June 28, 2013Publication date: June 25, 2015Applicant: SyntheticMR ABInventor: Marcel Warntjes
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Patent number: 9041393Abstract: A magnetic resonance sequence includes an interleaved slice-selective pre-pulse and a slice-selective multi-echo acquisition. This sequence is repeated with different delays between the pre-pulse and the acquisition resulting in a matrix of complex images. Based on this matrix T1 and T2 relaxations, proton density and the B1 field can be estimated. These quantified parameters enable synthetic magnetic resonance imaging (MRI) and form a robust input for tissue segmentation in computer aided diagnosis for MRI.Type: GrantFiled: July 24, 2009Date of Patent: May 26, 2015Assignee: SyntheticMR ABInventor: Marcel Warntjes
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Patent number: 8873822Abstract: In a magnetic resonance imaging display system, the brain parenchymal fraction, a clinical measure for brain atrophy, is found by selection of white matter, grey matter, and/or cerebrospinal fluid based on quantitative magnetic resonance properties.Type: GrantFiled: May 28, 2012Date of Patent: October 28, 2014Assignee: SyntheticMR ABInventor: Marcel Warntjes
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Patent number: 8874189Abstract: In a method and a device MR images having various contrasts are scanned and then values for some or all of the parameters T1, T2 and PD related to the scanned MR images are determined. Based on the scanned MR images and the determined parameter values an initial conventional MR contrast image with some default scanner settings is generated, or alternatively, a stronger non-physical MR contrast image. The initial MR contrast image can then be manipulated by a user in response to movement of a user-controlled marker on a screen showing the contrast image such that a contrast optimized image can be obtained for a particular diagnosis in a very short time. Furthermore a quantitative image can be generated representing the amount of a single tissue type.Type: GrantFiled: December 21, 2007Date of Patent: October 28, 2014Assignee: SyntheticMR ABInventor: Marcel Warntjes
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Patent number: 8643363Abstract: A segmented MR image is provided by measuring a number of Magnetic Resonance Imaging parameters on an absolute scale. For example T1 relaxation, T2 relaxation and Proton Density PD can be measured on an absolute scale. The absolute values are then compared with known values for at least one type of tissue. For human tissue these parameters typically are in the order 300-4500 ms for T1, 50-1000 ms for T2 and 0-100% water for PD. Both T1 and T2 depend on the field strength. Based on a comparison between normal values for a particular type of tissue the values obtained for the image each pixel/voxel can be labeled with a certain probability that the voxel contains this type of tissue and segmented accordingly.Type: GrantFiled: November 27, 2009Date of Patent: February 4, 2014Assignee: SyntheticMR ABInventor: Marcel Warntjes
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Publication number: 20140002076Abstract: Magnetic resonance imaging methods and apparatus for simultaneous measurement of the physical properties R1 and R2 relaxation rate, proton density, and apparent diffusion coefficient using a single magnetic resonance acquisition.Type: ApplicationFiled: July 2, 2012Publication date: January 2, 2014Applicant: SyntheticMR ABInventor: Marcel Warntjes
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Publication number: 20130315460Abstract: In a magnetic resonance imaging display system, the brain parenchymal fraction, a clinical measure for brain atrophy, is found by selection of white matter, grey matter, and/or cerebrospinal fluid based on quantitative magnetic resonance properties.Type: ApplicationFiled: May 28, 2012Publication date: November 28, 2013Applicant: SYNTHETICMR ABInventor: Marcel Warntjes