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SNR enhancement of highly-accelerated real-time cardiac MRI acquisitions based on non-local means algorithm

Benoît Naegel 1 Alexandru Cernicanu Jean-Noël Hyacinthe Maurizio Tognolini Jean-Paul Vallée
1 QGAR - Querying Graphics through Analysis and Recognition
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : Real-time cardiac MRI appears as a promising technique to evaluate the mechanical function of the heart. However, ultra-fast MRI acquisitions come with an important signal-to-noise ratio (SNR) penalty, which drastically reduces the image quality. Hence, a real-time denoising approach would be desirable for SNR amelioration. In the clinical context of cardiac dysfunction assessment, long acquisitions are required and for most patients the acquisition takes place with free breathing. Hence, it is necessary to compensate respiratory motion in real-time. In this article, a real-time and interactive method for sequential registration and denoising of real-time MR cardiac images is presented. The method has been experimented on 60 fast MRI acquisitions in five healthy volunteers and five patients. These experiments assessed the feasibility of the method in a real-time context.
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https://hal.inria.fr/inria-00412956
Contributor : Benoît Naegel <>
Submitted on : Wednesday, September 2, 2009 - 5:23:02 PM
Last modification on : Thursday, January 11, 2018 - 6:19:59 AM

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Benoît Naegel, Alexandru Cernicanu, Jean-Noël Hyacinthe, Maurizio Tognolini, Jean-Paul Vallée. SNR enhancement of highly-accelerated real-time cardiac MRI acquisitions based on non-local means algorithm. Medical Image Analysis, Elsevier, 2009, 13 (4), pp.598-608. ⟨10.1016/j.media.2009.05.006⟩. ⟨inria-00412956⟩

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