DRAGONU, Iulius; DENIS DE SENNEVILLE, Baudouin; QUESSON, Bruno; MOONEN, Chrit; RIES, Mario

doi:10.1002/mrm.21903

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DRAGONU, Iulius
Imagerie moléculaire et fonctionnelle: de la physiologie à la thérapie

DENIS DE SENNEVILLE, Baudouin
Institut de Mathématiques de Bordeaux [IMB]

QUESSON, Bruno
Imagerie moléculaire et fonctionnelle: de la physiologie à la thérapie

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Magnetic Resonance in Medicine. 2009, vol. 61, n° 4, p. 994–1000

Wiley

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Many MR-guided interventional procedures rely on fast imaging sequences for providing images in real-time with a precise relation between the target position in the image and its true position. Echo-planar imaging (EPI) methods are very fast but prone to geometric distortions. Here, we propose a correction method designed for real-time conditions, adapting existing approaches based on dual EPI acquisition with varying echo times. The method is demonstrated with MR-thermometry for guiding thermal therapies. The proposed approach imposes a small penalty in acquisition speed but adds negligible latency to data processing, an important element for interventions of mobile organs.< Leer menos

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Real-time geometric distortion correction for interventional imaging with echo-planar imaging (EPI)

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