Method and apparatus for denoising magnetic resonance diffusion tensor, and computer program product

An apparatus for denoising a magnetic resonance diffusion tensor, comprising:

• a storage for storing instructions;
• a processor which is coupled to the storage and is provided to execute the instructions stored in the storage, wherein the processor is provided for:
• collecting data of K space;
• calculating a maximum likelihood estimator of a diffusion tensor according to the collected data of K space;
• calculating a maximum posterior probability estimator of the diffusion tensor by using sparsity of the diffusion tensor and sparsity of a diffusion parameter and taking the calculated maximum likelihood estimator as an initial value;
• and
• calculating the diffusion parameter according to the calculated maximum posterior probability estimator.

A computer program product for denoising a magnetic resonance diffusion tensor, comprising:

• a computer readable storage medium having computer readable program codes implemented therein, the computer readable program codes include:
• a computer readable program code configured to collect data of K space;
• a computer readable program code configured to calculate a maximum likelihood estimator of a diffusion tensor according to the collected data of K space;
• a computer readable program code configured to calculate a maximum posterior probability estimator of the diffusion tensor by using sparsity of the diffusion tensor and a diffusion parameter and taking the calculated maximum likelihood estimator as an initial value;
• and
• a computer readable program code configured to calculate the diffusion parameter according to the calculated maximum posterior probability estimator.