Int J Comput Assist Radiol Surg - Wireless mobile technology to improve workflow and feasibility of MR-guided percutaneous interventions.

Tópicos

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Resumo

RPOSE: A wireless interactive display and control device combined with a platform-independent web-based user interface (UI) was developed to improve the workflow for interventional magnetic resonance imaging (iMRI).METHODS: The iMRI-UI enables image acquisition of up to three independent slices using various pulse sequences with different contrast weighting. Pulse sequence, scan geometry and related parameters can be changed on the fly via the iMRI-UI using a tablet computer for improved lesion detection and interventional device targeting. The iMRI-UI was validated for core biopsies with a liver phantom ([Formula: see text] [Formula: see text] 40) and Thiel soft-embalmed human cadavers ([Formula: see text] [Formula: see text] 24) in a clinical 1.5T MRI scanner.RESULTS: The iMRI-UI components and setup were tested and found conditionally MRI-safe to use according to current ASTM standards. Despite minor temporary touch screen interference at a close distance to the bore ([Formula: see text]20 cm), no other issues regarding quality or imaging artefacts were observed. The 3D root-mean-square distance error was [Formula: see text] (phantom)/[Formula: see text] mm (cadaver), and overall procedure times ranged between 12 and 22 (phantom)/20 and 55 min (cadaver).CONCLUSION: The wireless iMRI-UI control setup enabled fast and accurate interventional biopsy needle placements along complex trajectories and improved the workflow for percutaneous interventions under MRI guidance in a preclinical trial.

Resumo Limpo

rpose wireless interact display control devic combin platformindepend webbas user interfac ui develop improv workflow intervent magnet reson imag imrimethod imriui enabl imag acquisit three independ slice use various puls sequenc differ contrast weight puls sequenc scan geometri relat paramet can chang fli via imriui use tablet comput improv lesion detect intervent devic target imriui valid core biopsi liver phantom formula see text formula see text thiel softembalm human cadav formula see text formula see text clinic t mri scannerresult imriui compon setup test found condit mrisaf use accord current astm standard despit minor temporari touch screen interfer close distanc bore formula see text cm issu regard qualiti imag artefact observ d rootmeansquar distanc error formula see text phantomformula see text mm cadav overal procedur time rang phantom min cadaverconclus wireless imriui control setup enabl fast accur intervent biopsi needl placement along complex trajectori improv workflow percutan intervent mri guidanc preclin trial

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