Afficher la couverture 'Real-time geometric distortion correction for interventional imaging with echo-planar imaging (EPI) | Dragonu, Iulius' en grand format
/5

0 avis

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

Archive ouverte

Dragonu, Iulius | Denis de Senneville, Baudouin | Quesson, Bruno | Moonen, Chrit | Ries, Mario

Edité par CCSD ; Wiley -

International audience. 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.

Suggestions

Du même auteur

Robust Real-Time-Constrained Estimation of Respiratory Motion for Interventional MRI on Mobile Organs

Archive ouverte | Roujol, Sébastien | CCSD

International audience. Real time magnetic resonance (MR) imaging is a promising tool for image-guided interventions. For applications such as thermotherapy on moving organs, a fine image-based compensation of motio...

An Adaptive Non-Local-Means Filter for Real-Time MR-Thermometry

Archive ouverte | Zachiu, Cornel | CCSD

International audience. Proton resonance frequency shift-based magnetic resonance thermometry is a currently used technique for monitoring temperature during targeted thermal therapies. However, in order to provide ...

MR-Guided Thermotherapy of Abdominal Organs Using a Robust PCA-Based Motion Descriptor

Archive ouverte | Denis de Senneville, Baudouin | CCSD

International audience. Thermotherapies can now be guided in real-time using magnetic resonance imaging (MRI). This technique is rapidly gaining importance in interventional therapies for abdominal organs such as li...

Chargement des enrichissements...