Name
Abstract | ||
|---|---|---|
Commercial high field magnetic resonance (MR) scanners are generally not equipped with measurement software and hardware to perform interventional studies with active devices that contain small radio-frequency (rf) coils for localisation. With only minimal modifications to the MR scanner, in this study the technique of active catheter tracking is implemented on a clinical MR system. Small rf-coils are attached to a commercial angiography catheter and the movement of the coils is observed with fast MR tracking and imaging techniques. Optimised imaging strategies are explored for both static and moving anatomical regions. Image calculation and display software is implemented using both the MR scanner's fast image reconstruction processor together with the main console computer and a separate personal computer. With the current implementation image update rates of up to several Hertz can be achieved, if a roadmap imaging technique is used, where rapid co-ordinate updates are projected onto previously acquired overview images. To account for cardiac and breathing motion an interleaved imaging strategy is presented where co-ordinate and image updates are acquired in rapid succession. With this approach image update rates of I to 2 Hertz are obtained depending on the details of the image reconstruction process. |
Year | DOI | Venue |
|---|---|---|
2001 | 10.1016/S0531-5131(01)00208-4 | CARS 2001: COMPUTER ASSISTED RADIOLOGY AND SURGERY |
Keywords | Field | DocType |
interventional MRI, catheter tracking, endoluminal catheters, rapid MRI techniques | Iterative reconstruction,Computer vision,Personal computer,Software,Scanner,Artificial intelligence,Radiology,Interventional magnetic resonance imaging,Medicine,Angiography,Active devices,Magnetic resonance imaging | Conference |
Volume | ISSN | Citations |
1230 | 0531-5131 | 0 |
PageRank | References | Authors |
0.34 | 1 | 6 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| M. Bock | 1 | 0 | 0.68 |
| S. Volz | 2 | 0 | 0.34 |
| S. Zühlsdorff | 3 | 0 | 0.34 |
| H.-J. Zabel | 4 | 0 | 0.34 |
| R. Umathum | 5 | 0 | 0.34 |
| W. Semmler | 6 | 1 | 1.15 |