Patent ID: 11914015
Assignee: FUJIFILM HEALTHCARE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. An image processing method for noise removal in an image acquired by a magnetic resonance imaging apparatus, the method comprising:
processing the acquired image to generate a reconstructed image obtained with a reconstruction matrix extended by zero-filling an acquisition matrix of nuclear magnetic resonance signals;
removing noise using an L1 norm minimization process from the reconstructed image after changing the size of a matrix of the reconstructed image and by setting a mother wavelet as a reference and expanding/contracting and parallel translating the mother wavelet, thereby creating a noise-removed image;
restoring the matrix size of the reconstructed image after the noise removal to an original size;
converting the noise-removed image from the image space data to k-space data by a Fourier transform; and
cutting out a reconstruction matrix size that is a same as a size prior the extending of the acquisition matrix in the k-space to obtain the reconstructed image.