UNIGE document Scientific Article
previous document  unige:19996  next document
add to browser collection
Title

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

Authors
Naegel, Benoit
Tognolini, Maurizio
Published in Medical Image Analysis. 2009, vol. 13, no. 4, p. 598-608
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.
Keywords *AlgorithmsComputer SystemsHumansImage Enhancement/*methodsImage Interpretation, Computer-Assisted/*methodsMagnetic Resonance Imaging, Cine/*methodsMyocardial Ischemia/*diagnosisMyocardium/*pathologyReproducibility of ResultsSensitivity and Specificity
Identifiers
PMID: 19541530
Full text
Structures
Research group Imagerie cardiaque fonctionnelle (541)
Citation
(ISO format)
NAEGEL, Benoit et al. SNR enhancement of highly-accelerated real-time cardiac MRI acquisitions based on non-local means algorithm. In: Medical Image Analysis, 2009, vol. 13, n° 4, p. 598-608. https://archive-ouverte.unige.ch/unige:19996

239 hits

0 download

Update

Deposited on : 2012-04-23

Export document
Format :
Citation style :