Automatic image-based retrospective gating of interventional cardiac X-ray images.
Gating of X-ray fluoroscopy images is required for catheter reconstruction for registration of pre-procedural images with fluoroscopy for guidance and biophysical modelling. We propose a novel and clinically useful retrospective method for automatic image-based cardiac and respiratory motion gating. The technique is based on tracking and statistical analysis of the shape of the coronary sinus catheter. We applied our method on five mono-plane imaging sequences comprising a total of 322 frames from five different patients undergoing radiofrequency ablation for the treatment of atrial fibrillation. We established systole, end-inspiration and end-expiration gating with success rates of 100%, 89.47% and 81.25% respectively.
Division of Imaging Sciences & Biomedical Engineering, King's College London, SEI 7EH, UK. mariapanayiotou@kcl.ac.uk
Maria
M
Panayiotou
Andrew P
AP
King
YingLiang
Y
Ma
C Aldo
CA
Rinaldi
J
J
Gill
Michael
M
Cooklin
Mark
M
O'Neil
Kawal S
KS
Rhode
D001281:Atrial Fibrillation / Q000000981:diagnostic imaging* / Q000601:surgery*; D017115:Catheter Ablation / Q000379:methods; D005471:Fluoroscopy / Q000379:methods*; D006801:Humans; D010363:Pattern Recognition, Automated / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015641:Radiography, Interventional / Q000379:methods*; D015203:Reproducibility of Results; D055425:Respiratory-Gated Imaging Techniques / Q000379:methods*; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D016896:Treatment Outcome