title: Registration of 3D+t coronary CTA and monoplane 2D+t X-ray angiography.
abstract: A method for registering preoperative 3D+t coronary CTA with intraoperative monoplane 2D+t X-ray angiography images is proposed to improve image guidance during minimally invasive coronary interventions. The method uses a patient-specific dynamic coronary model, which is derived from the CTA scan by centerline extraction and motion estimation. The dynamic coronary model is registered with the 2D+t X-ray sequence, considering multiple X-ray time points concurrently, while taking breathing induced motion into account. Evaluation was performed on 26 datasets of 17 patients by comparing projected model centerlines with manually annotated centerlines in the X-ray images. The proposed 3D+t/2D+t registration method performed better than a 3D/2D registration method with respect to the accuracy and especially the robustness of the registration. Registration with a median error of 1.47 mm was achieved.
authors: Department of Radiology and Department of Medical Informatics, ErasmusMC, 3015 GE Rotterdam, The Netherlands.
authors: Coert T
authors: CT
authors: Metz
authors: Michiel
authors: M
authors: Schaap
authors: Stefan
authors: S
authors: Klein
authors: Nora
authors: N
authors: Baka
authors: Lisan A
authors: LA
authors: Neefjes
authors: Carl J
authors: CJ
authors: Schultz
authors: Wiro J
authors: WJ
authors: Niessen
authors: Theo
authors: T
authors: van Walsum
mesh_terms: D000465:Algorithms; D017023:Coronary Angiography / Q000379:methods*; D004562:Electrocardiography; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D009068:Movement / Q000502:physiology; D062645:Percutaneous Coronary Intervention; D012815:Signal Processing, Computer-Assisted; D014057:Tomography, X-Ray Computed / Q000379:methods*