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Abstract #2557

System for Real-Time Reconstruction and Interactive Table Motion in Multi-Station 3D CE-MRA Exams

Eric A. Borisch1, Casey P. Johnson1, Roger C. Grimm1, Stephen J. Riederer1

1MR Research Laborary, Mayo Clinic, Rochester, MN, United States

A system is described that enables multi-station interactive bolus-chase CE-MRA examinations. The system consists of: a custom pulse sequence with network connectivity, interactive graphical interface for the operator, and high-performance reconstruction software and hardware. Reconstructions of the imaged 3D time-series (acquired with 2.5s update times) are completed and displayed to the operator within 110ms while the examination is proceeding, enabling sufficient time for the operator to visualize bolus transit to determine if the current station is complete. The system has been used successfully for three-station lower extremity examinations.

Keywords

accelerated achieved acquisition acquisitions action adjusted advancing algebra anatomy angiography applicable atlas available background blocks bolus capable clinic cluster code coil competing completion comprised computing connections connectivity connects contrast control controlling controls coordinate correction count cross describe described design develop developed displayed distal enable enhanced enough every exam exams except executing extend extremities faster final flexibility flow fluoroscopic frame full generated goals gradient graphical hand henceforth improvements initiated instances integration interactive interface keep linear maintaining material matrix maximizes monitor motion move movement must needed network next observes operations operator optimized oriented output pace package passing performance permitting placement prepared previously prior procedure proceeding process programs progression projections properties providing quality rapid real recently reconstructed reconstruction reconstructions resolution running selection sense series short software spatial specifications station stations steps stringent studies subtraction successful support system table tracking transit transpose triggered triggering triggers unfolding update updates upon view viewing volumes volunteers warping window