ValueSet-dicom-cid-7263-DiffusionTractographyMeasurementType

Include these codes as defined in http://dicom.nema.org/resources/ontology/DCM

Code	Display	Definition
113041	Apparent Diffusion Coefficient	Values are derived by calculation of the apparent diffusion coefficient. This concept may be used for the diffusion coefficient of various different models, e.g., mono-exponential (ADCm), kurtosis (ADCk), stretched-exponential (ADCs).The "apparent" appellation is because the diffusion images from which the ADC is computed may also be affected by T2 contrast (T2 "shine-through"), so this concept is distinguished from a "pure" diffusion coefficient that is not so affected.
113201	Trace	Sum of the diffusion tensor eigenvalues.I.e.: Tr = λ1+ λ2+ λ3, where λ1 ≥ λ2 ≥ λ3.Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()
113202	Mean Diffusivity	Average of the diffusion tensor eigenvalues in all directions.I.e.: MD = (λ1+ λ2+ λ3) /3Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()
110812	Volumetric Diffusion Dxz Component	Dxz Component of the diffusion tensor, quantifying the correlation of molecular displacements in the X and Z directions.
110811	Volumetric Diffusion Dxy Component	Dxy Component of the diffusion tensor, quantifying the correlation of molecular displacements in the X and Y directions.
110810	Volumetric Diffusion Dxx Component	Dxx Component of the diffusion tensor, quantifying the molecular mobility along the X axis.
110809	Relative Anisotropy	Coefficient reflecting the relative anisotropy of the tissues, derived from a diffusion weighted MR image.
113203	Radial Diffusivity	Average of the two non-principal (i.e., perpendicular) diffusion tensor eigenvalues(also known as transverse diffusivity, perpendicular diffusivity).I.e.: DR= (λ2+ λ3) /2Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()
110808	Fractional Anisotropy	Coefficient reflecting the fractional anisotropy of the tissues, derived from a diffusion weighted MR image. Fractional anisotropy is proportional to the square root of the variance of the Eigen values divided by the square root of the sum of the squares of the Eigen values.
113204	Axial Diffusivity	Diffusion tensor eigenvalue of the principal axis (also known as longitudinal diffusivity, parallel diffusivity).I.e.: DA = λ1Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()
113205	Mean Kurtosis	MK = diffusional kurtosis averaged over all gradient directionsReference: Tabesh A, Jensen JH, Ardekani BA, Helpern JA. Estimation of Tensors and Tensor-Derived Measures in Diffusional Kurtosis Imaging. Magnetic Resonance in Medicine. 2011;65(3) :823-836. doi:10.1002/mrm.22655. ()Reference: Liu C, Mang SC, Moseley ME. In VivoGeneralized Diffusion Tensor Imaging (GDTI) Using Higher-Order Tensors (HOT). Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine. 2010;63(1) :243-252. doi:10.1002/mrm.22192. ()
113206	Apparent Kurtosis Coefficient	AKC = diffusional kurtosis in a given directionReference: Liu C, Mang SC, Moseley ME. In VivoGeneralized Diffusion Tensor Imaging (GDTI) Using Higher-Order Tensors (HOT). Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine. 2010;63(1) :243-252. doi:10.1002/mrm.22192. ()
113207	Radial Kurtosis	KR = diffusional kurtosis perpendicular to the direction of the highest diffusion (also known as transverse kurtosis, perpendicular kurtosis)Reference: Tabesh A, Jensen JH, Ardekani BA, Helpern JA. Estimation of Tensors and Tensor-Derived Measures in Diffusional Kurtosis Imaging. Magnetic Resonance in Medicine. 2011;65(3) :823-836. doi:10.1002/mrm.22655. ()
113208	Axial Kurtosis	KA = diffusional kurtosis in the direction of the highest diffusion (also known as longitudinal kurtosis, parallel kurtosis)Reference: Tabesh A, Jensen JH, Ardekani BA, Helpern JA. Estimation of Tensors and Tensor-Derived Measures in Diffusional Kurtosis Imaging. Magnetic Resonance in Medicine. 2011;65(3) :823-836. doi:10.1002/mrm.22655. ()
110815	Volumetric Diffusion Dzz Component	Dzz Component of the diffusion tensor, quantifying the molecular mobility along the Z axis.
113209	Fractional Kurtosis Anisotropy	FKA = fractional kurtosis of diffusion in tissuesReference: Liu C, Mang SC, Moseley ME. In VivoGeneralized Diffusion Tensor Imaging (GDTI) Using Higher-Order Tensors (HOT). Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine. 2010;63(1) :243-252. doi:10.1002/mrm.22192. ()
110814	Volumetric Diffusion Dyz Component	Dyz Component of the diffusion tensor, quantifying the correlation of molecular displacements in the Y and Z directions.
110813	Volumetric Diffusion Dyy Component	Dyy Component of the diffusion tensor, quantifying the molecular mobility along the Y axis.