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Code
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Display
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Definition
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113041
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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. |
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113294
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Kurtosis Diffusion Coefficient |
The diffusion coefficient of a kurtosis diffusion model (ADCk). |
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113295
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Gamma Distribution Scale Parameter |
The scale (theta) parameter of a gamma distribution diffusion model. |
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113296
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Gamma Distribution Shape Parameter |
The shape (k) parameter of a gamma distribution diffusion model. |
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113297
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Gamma Distribution Mode |
The mode (maximum value of probability density function) of a gamma distribution diffusion model. Computed as (k-1)*theta, for k >= 1. |
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113298
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Distributed Diffusion Coefficient |
The distributed diffusion coefficient of a stretched-exponential diffusion model (ADCs). |
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113299
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Anomalous Exponent Parameter |
The anomalous exponent (stretching, alpha) parameter of a stretched-exponential diffusion model. This describes the deviation of the signal attenuation from mono-exponential behavior |
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113289
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Diffusion Coefficient |
The pure diffusion coefficient, i.e., one that is not affected by T2 contrast effects. |
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113290
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Mono-exponential Apparent Diffusion Coefficient |
The diffusion coefficient of a mono-exponential diffusion model (ADCm). |
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113291
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Slow Diffusion Coefficient |
The slow diffusion coefficient (Ds) of a bi-exponential intravoxel incoherent motion (IVIM) diffusion model. |
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113292
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Fast Diffusion Coefficient |
The fast diffusion coefficient (Df) of a bi-exponential intravoxel incoherent motion (IVIM) diffusion model. |
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113293
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Fast Diffusion Coefficient Fraction |
The fast diffusion fraction of a bi-exponential intravoxel incoherent motion (IVIM) diffusion model. |