Multicomponent MR Image Denoising

Author:

Manjón José V.1,Thacker Neil A.2,Lull Juan J.1,Garcia-Martí Gracian13,Martí-Bonmatí Luís3,Robles Montserrat1

Affiliation:

1. Instituto de Aplicaciones de las Tecnologías de la Información y de las Comunicaciones Avanzadas (ITACA), Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain

2. Imaging Science and Biomedical Engineering Division, Medical School, University of Manchester, Stopford Building, Oxford Road, Manchester M13 9PT, UK

3. Department of Radiology, Quirón Hospital, Blasco Ibáñez, 14, 46010 Valencia, Spain

Abstract

Magnetic Resonance images are normally corrupted by random noise from the measurement process complicating the automatic feature extraction and analysis of clinical data. It is because of this reason that denoising methods have been traditionally applied to improve MR image quality. Many of these methods use the information of a single image without taking into consideration the intrinsic multicomponent nature of MR images. In this paper we propose a new filter to reduce random noise in multicomponent MR images by spatially averaging similar pixels using information from all available image components to perform the denoising process. The proposed algorithm also uses a local Principal Component Analysis decomposition as a postprocessing step to remove more noise by using information not only in the spatial domain but also in the intercomponent domain dealing in a higher noise reduction without significantly affecting the original image resolution. The proposed method has been compared with similar state-of-art methods over synthetic and real clinical multicomponent MR images showing an improved performance in all cases analyzed.

Funder

Conselleria de Empresa, Universidad y Ciencia

Publisher

Hindawi Limited

Subject

Radiology Nuclear Medicine and imaging

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