METHOD FOR DETERMINING AN IMAGING QUALITY INFORMATION FOR A MAGNETIC RESONANCE IMAGING APPARATUS FROM A SIGNAL-TO-NOISE RATIO AT AN ANATOMICAL LANDMARK
Method for determining an imaging quality information for a magnetic resonance imaging apparatus, MRIA, (1) in an examination process of a patient (4) positioned within an imaging volume (5) of the MRIA (1), wherein the imaging quality information is used for assessing the performance of the MRIA (1...
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Zusammenfassung: | Method for determining an imaging quality information for a magnetic resonance imaging apparatus, MRIA, (1) in an examination process of a patient (4) positioned within an imaging volume (5) of the MRIA (1), wherein the imaging quality information is used for assessing the performance of the MRIA (1) and/or for determining imaging parameters for an imaging protocol, comprising the steps of measuring a noise information describing the general noise properties of the MRIA (1) in the imaging volume (5) using a predetermined first magnetic resonance sequence, acquiring patient image data in at least one imaging region of the patient (4) using a predetermined second magnetic resonance sequence, localizing at least one anatomical landmark of a group of predetermined anatomical landmarks in the patient image by a landmark detection algorithm, wherein for each landmark and/or for at least one pair of landmarks, a reference information regarding the imaging quality information is provided in a database (8), determining a landmark-specific signal-to-noise ratio for each localized landmark from the patient image data at the landmark and the noise information, and determining the imaging quality information from the landmark-specific signal-to-noise ratio, wherein the assessment of the performance of the MRIA (1) and/or the determination of the imaging parameters is performed depending on a comparison of the imaging quality information and the corresponding reference information in the database (8). |
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