Model based 3D CS-catheter tracking from 2D X-ray projections: binary versus attenuation models.
Tracking the location of medical devices in interventional X-ray data solves different problems. For example the motion information of the devices is used to determine cardiac or respiratory motion during X-ray guided procedures or device features are used as landmarks to register images. In this publication an approach using a 3D deformable catheter model is presented and used to track a coronary sinus (CS) catheter in 3D plus time through a complete rotational angiography sequence. The benefits of using voxel based models with attenuation information for 2D/3D registration are investigated in comparison to binary catheter models. The 2D/3D registration of the model allows to extract a 3D catheter shape from every individual 2D projection. The tracking accuracy is evaluated on simulated and clinical rotational angiography data of the contrast enhanced left atrium. The quantitative evaluation of the experiments delivers an average registration accuracy for all catheter electrodes of 0.23 mm in 2D and 0.95 mm in 3D when using an attenuation model of the catheter. The overall tracking accuracy is lower when using binary catheter models.
Philips Research, 22335 Hamburg, Germany; Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany. Electronic address: christian.haase@philips.com.
Christian
C
Haase
Philips Research, 22335 Hamburg, Germany. Electronic address: dirk.schaefer@philips.com.
Dirk
D
Schäfer
Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany. Electronic address: olaf.doessel@kit.edu.
Olaf
O
Dössel
Philips Research, 22335 Hamburg, Germany. Electronic address: michael.grass@philips.com.
Michael
M
Grass
D000465:Algorithms; D000792:Angiography / Q000379:methods*; D002406:Catheterization, Peripheral / Q000379:methods*; D003198:Computer Simulation; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008955:Models, Cardiovascular; D010363:Pattern Recognition, Automated / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015641:Radiography, Interventional / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
2D/3D registration; Catheter tracking; Electrophysiology; Rotational angiography; X-ray imaging