Szczegóły publikacji
Opis bibliograficzny
A method for calibrating a diffusion imaging sequence during a diffusion MRI experiment / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie ; wynalazca: KRZYŻAK Artur. — Int.Cl.: G01R 33/563(2006.01). — World Intellectual Property Organization. — Opis zgłoszeniowy wynalazku ; WO2017017163A1 ; Opubl. 2017-02-02. — Zgłosz. nr PCT/EP2016/067964 z dn. 2016-07-27
Autor
Słowa kluczowe
EN: calibration DWI sequencesMRTmodel of diffusion tensorcalibration MRI sequencesB-matrix spatial distribution in DTIcalibration of MR scannermagnetic resonance imagingMRIanisotropic diffusion phantomBSD-DTIsBSD-DTImagnetic resonance thomographycalibration DTI sequencesDTINMRnuclear magnetic resonancesimplified BSD-DTIdiffusion weighted imagingdiffusion tensor imagingDWInorm of diffusion tensor
Dane bibliometryczne
| ID BaDAP | 104014 |
|---|---|
| Data dodania do BaDAP | 2017-02-11 |
| Tekst źródłowy | URL |
| Rok publikacji | 2017 |
| Typ publikacji | zgłoszenie patentowe |
| Otwarty dostęp |  |
Abstract
A method for calibrating a diffusion imaging sequence during a DMRI (Diffusion Magnetic Resonance Imaging) experiment performed in an MR (Magnetic Resonance) tomograph, wherein the experiment comprises calculating diffusion coefficients and/or diffusion tensor coefficients on the basis of a spatial distribution of a b matrix, the method for calibrating comprising the following steps: within the field of influence of an RF (Radio Frequency) coil in an examined space of the MR tomograph: providing (201) an anisotropic diffusion phantom (101) with known values of diffusion tensor, the anisotropic diffusion phantom (101) having diffusion limited therein in at least one direction along a first axis of the principal axes of the anisotropic diffusion phantom (101); placing the anisotropic diffusion phantom (101) sequentially in a selected location within the examined space in three different positioning arrangements orthogonal with respect to each other; and placing an isotropic diffusion phantom (102) having a known diffusion tensor in said selected location; for each positioning arrangement of the anisotropic diffusion phantom (101) and the isotropic diffusion phantom (102), measuring (202, 205) MR signals; determining (203, 206) the values of the b matrix, based on the measured MR signals, for each voxel of a volume comprised inside both the volume of the anisotropic diffusion phantom (101) and the volume of the isotropic diffusion phantom (102); and providing (207) the determined spatial distribution of the b matrix as a calibration result for the DMRI sequence for the particular MR tomograph.