A system and method for reducing streak artifacts in a multiplanar reconstruction image are provided. The method may include: retrieving a first image volume from image data, the first image volume including multiple images, at least one of which includes a streak artifact including multiple streaks of a streak width along a first direction; down sampling the first image volume along the first direction at an image increment equal to the streak width to generate a second image volume; equalizing the second image volume along a second direction to generate a third image volume; up sampling the third image volume along the first direction to generate a fourth image volume; determining an error image volume based on the fourth image volume and the first image volume; correcting the first image volume according to the error image volume; and generating, based on the corrected first image volume, a corrected image volume.