Percutaneous MR-guided interventions using an optical Moiré Phase tracking system: Initial results

Autor: Georg Rose, Oliver Speck, Frank Godenschweger, Urte Kägebein, Bennet Hensen, Frank Wacker, Brian S. R. Armstrong
Rok vydání: 2018
Předmět:
Ceramics
Percutaneous
Computer science
Polymers
Computer Vision
lcsh:Medicine
030218 nuclear medicine & medical imaging
Diagnostic Radiology
Database and Informatics Methods
0302 clinical medicine
Image Processing
Computer-Assisted
Medicine and Health Sciences
Computer vision
Medical Personnel
lcsh:Science
Materials
Multidisciplinary
medicine.diagnostic_test
Radiology and Imaging
Tracking system
Cameras
Magnetic Resonance Imaging
Professions
Chemistry
Optical Equipment
Macromolecules
Elastomers
Physical Sciences
Trajectory
Magnets
Engineering and Technology
Sequence Analysis
Moire Topography
Research Article
Computer and Information Sciences
Imaging Techniques
Bioinformatics
Materials Science
Equipment
Image processing
Research and Analysis Methods
Imaging phantom
03 medical and health sciences
Diagnostic Medicine
Radiologists
medicine
Humans
business.industry
lcsh:R
Magnetic resonance imaging
Polymer Chemistry
Target Detection
People and Places
lcsh:Q
Population Groupings
Artificial intelligence
Rubber
business
Sequence Alignment
030217 neurology & neurosurgery
Zdroj: PLoS ONE
PLoS ONE, Vol 13, Iss 10, p e0205394 (2018)
ISSN: 1932-6203
Popis: The aim of this study was the development and evaluation of a real-time guidance support using optical Moiré Phase Tracking (MPT) for magnetic resonance (MR) guided percutaneous interventions. A gradient echo sequence, capable of real-time position updates by the MPT system, was modified to enable needle guidance based on four rigidly attached MPT markers at the back of a needle. Two perpendicular imaging planes were automatically aligned along the calibrated needle and centered at its tip. For user guidance, additional information about the needle trajectory and the tip to target distance were added as image overlay. Both, images and guiding information were displayed on the in-room monitor to facilitate MR guided interventions. The guidance support was evaluated by four experienced interventional radiologists and four novices targeting rubber O-rings embedded in a custom-made phantom on a 3T wide-bore MRI system (80 punctures). The skin to target time, user error, system error and total error were analyzed. The mean skin to target time was 146s±68s with no statistically significant difference between experts and novices. A low mean user error (0.91mm±0.43mm), system error (0.53mm±0.27mm) and total error (0.99mm±0.47mm) was reached in all directions. No statistically significant difference in user error, system error and total error could be found between experts and novices. The presented tracking and image guidance system combined with the user interface offers continuous and interactive control of the imaging plane while puncturing in the magnet enabling accurate real-time feedback for both, experienced and non-experienced users.
Databáze: OpenAIRE
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