mr-compatible catheter  (IMRICOR Medical Systems Inc)

Journal: Scientific Reports

Article Title: Continuous cardiac thermometry via simultaneous catheter tracking and undersampled radial golden angle acquisition for radiofrequency ablation monitoring

doi: 10.1038/s41598-022-06927-9

Figure Lengend Snippet: Motion detection and effect of the motion correction on magnitude images and temperature maps on a moving Agar gel phantom: ( a ) magnitude image obtained by 2D radon transform of two projections and used for localizing each of the catheter micro-coils. ( b ) Motion curves of the distal micro-coil of the RFA catheter inserted in the moving Agar phantom. The X (red) and Y (blue) curves describe the in-plane motion quantitatively while the Z (green) curve shows qualitatively the variation of the micro-coil signal intensity. ( c,f ) show magnitude images reconstructed by NUFFT with an in-plane resolution of 2 × 2 mm 2 , all the projections (20,000) without and with rigid 2D in-plane motion correction respectively. ( d,g ) Show temperature maps obtained at t = 135 s with 40 projections without and with motion correction, respectively. Temperature values below 5 degrees are set to transparent. ( e,h ) Show three temperature curves obtained in points 1, 2, and 3 without and with motion correction, respectively. The temperature standard deviations obtained in the purple box area after the training period (from t = 50 s) were 1 °C and 1.5 °C with and without motion correction, respectively.

Article Snippet: An MR compatible RFA catheter (Vision-MR Ablation Catheter, Imricor Medical Systems, Burnsville, MN, USA) with two embedded micro-coils (proximal and distal) was used to perform the ablation.

Techniques:

Journal: Biomedical microdevices

Article Title: Interventional magnetic resonance imaging guided carotid embolectomy using a novel resonant marker catheter: demonstration of preclinical feasibility

doi: 10.1007/s10544-017-0225-9

Figure Lengend Snippet: Resonant Catheter Design: The wireless resonant circuit, consisting of a single loop copper coil connected to a tunable flexible printed circuit board capacitor (55–100 pF), is tuned to the Larmor frequency of 63.89 Mhz and embedded in distal tip of a polyether ether ketone (PEEK) fiber thread catheter. The catheter is then coated with a protective Pebax layer

Article Snippet: The wRC catheter system was constructed using a MR compatible PEEK fiber braided catheter (Penumbra, Inc, Alameda, CA) with a single insulated longitudinal copper loop soldered to a printed circuit board embedded within the catheter wall.

Techniques:

Journal: Biomedical microdevices

Article Title: Interventional magnetic resonance imaging guided carotid embolectomy using a novel resonant marker catheter: demonstration of preclinical feasibility

doi: 10.1007/s10544-017-0225-9

Figure Lengend Snippet: The PEEK fiber used to braid the catheter allowed for adequate deflection and flexibility for the resonant circuit catheter system to make vascular turns. The figure demonstrates the catheter system’s mechanical properties and provides a cross-sectional view of the lumen

Article Snippet: The wRC catheter system was constructed using a MR compatible PEEK fiber braided catheter (Penumbra, Inc, Alameda, CA) with a single insulated longitudinal copper loop soldered to a printed circuit board embedded within the catheter wall.

Techniques: