Joint Arthrography with MRI Image Overlay: Porcine Trials
Fischer G, Deguet A, Csoma C, Fichtinger G, Taylor R, Fayad L, Zinreich S
MR arthrography generally consists of two consecutive sessions: 1) an interventional session where a needle is driven to the joint space and contrast is injected under fluoroscopic or CT guidance and 2) a diagnostic MRI imaging session to visualize the distribution of contrast and evaluate the condition of the joint. We eliminate the separate radiologically guided needle insertion by performing those tasks on conventional high-field closed MRI scanners using a 2D augmented reality image overlay device to help guide needle placement procedures. Twelve trials have been performed on porcine cadaver shoulders in a 1.5T scanner with 100% of needles reaching the joint space on the first insertion attempt.