Prediction, scoring, and classification of magnetic resonance contrast using contrast signal scoring equation
AssigneeKoninklijke Philips N.V.
InventorsJulien Senegas, Peter Koken
Life of this patent
Estimating the term…
Abstract
A magnetic resonance imaging sequence is defined by an imaging protocol and parameter values for a set of parameters of the imaging protocol. A contrast signal score is computed for the magnetic resonance imaging sequence respective to a contrast type to be scored using a scoring equation. A contrast type is determined for the magnetic resonance imaging sequence based on the computed contrast signal score. In one approach, the computing is repeated for a plurality of different contrast types to be scored, and the determining is based on the computed contrast signal scores.
Claims16
A non-transitory storage medium storing instructions executable by an electronic data processing device to perform a method including:
- identifying a magnetic resonance imaging sequence defined by an imaging protocol, type of tissue to be imaged, and parameter values for a set of parameters of the imaging protocol;
- computing a contrast signal score for the magnetic resonance imaging sequence respective to a contrast type to be scored using a scoring equation;
- determining a contrast type for the magnetic resonance imaging sequence based on the computed contrast signal score;
- operating a magnetic resonance imaging (MRI) device using the magnetic resonance imaging sequence to generate a magnetic resonance image;
- and
- labeling the magnetic resonance image with the determined contrast type;
- wherein the scoring equation is:
- score
-
- (
- p
- )
- =
- ∂
- S
-
- (
- p
- )
- ∂
- p
- ·
- p
- S
-
- (
- p
- )
- where score (p) is the contrast signal score for the contrast type to be scored and S(p) denotes the signal generated by the magnetic resonance imaging sequence as a function of a characteristic p whose variation gives rise to the contrast type to be scored, the characteristic p including at least one of a T1 relaxation time of imaged tissues, a T2 relaxation time of images tissues, blood velocity, and exogenous contrast agent concentration.
A non-transitory storage medium storing instructions executable by an electronic data processing device to perform a method including:
- identifying a magnetic resonance imaging sequence defined by an imaging protocol having an intended contrast type, a type of tissue to be imaged, and parameter values for a set of parameters of the imaging protocol by monitoring user inputs to a magnetic resonance scanner user interface to detect user selection of the imaging protocol and user editing that changes one or more of the parameter values;
- computing a contrast signal score for the magnetic resonance imaging sequence respective to a contrast type to be scored using a scoring equation;
- determining a contrast type for the magnetic resonance imaging sequence based on the computed contrast signal score;
- and
- displaying a warning via the magnetic resonance user interface responsive to the determined contrast type for the magnetic resonance imaging sequence being different from the intended contrast type;
- wherein the scoring equation includes the partial derivative:
- ∂
- S
-
- (
- p
- )
- ∂
- p
- where S (p) denotes the signal generated by the magnetic resonance imaging sequence as a function of a characteristic p whose variation gives rise to the contrast type to be scored, the characteristic p including at least one of a T1 relaxation time of imaged tissues, a T2 relaxation time of images tissues, blood velocity, and exogenous contrast agent concentration.
A method comprising:
- identifying a magnetic resonance imaging sequence defined by an imaging protocol, type of tissue to be imaged, and parameter values for a set of parameters of the imaging protocol;
- computing a contrast signal score for the magnetic resonance imaging sequence respective to a contrast type to be scored using a scoring equation;
- determining a contrast type for the magnetic resonance imaging sequence based on the computed contrast signal score;
- operating a magnetic resonance imaging (MRI) device using the magnetic resonance imaging sequence to generate a magnetic resonance image;
- and
- labeling the magnetic resonance image with the determined contrast type;
- wherein at least the computing, the determining, and the labeling are performed by an electronic data processing device;
- and
- wherein the contrast type to be scored has an expected value p for a characteristic producing the contrast type to be scored and the scoring equation includes the partial derivative ∂s(p)/∂p where S(p) denotes the signal generated by the magnetic resonance imaging sequence for a substance having the expected value p, the characteristic p including at least one of a T1 relaxation time of imaged tissues, a T2 relaxation time of images tissues, blood velocity, and exogenous contrast agent concentration.
Dependencies are inferred from the claim text.