| Registration of three-dimensional left atrial computed tomographic images with projection images obtained using fluoroscopy. | |
| | |
MedLine Citation:
|
PMID: 16344405 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: Anatomic structures such as the left atrium and the pulmonary veins (PVs) are not delineated by fluoroscopy because there is no contrast differentiation between them and the surrounding anatomy. Representation of an anatomic structure via a 3D model obtained from computed tomography (CT) imaging and subsequent projection of these images over the fluoroscopy system may help in navigation of the mapping and ablation catheter to the appropriate sites during electrophysiology procedures. METHODS AND RESULTS: In this feasibility study, in vitro experiments were performed with a plastic heart model (phantom) with 2 catheters or radiopaque platinum beads placed in the phantom at the time of CT imaging and fluoroscopy. Subsequently, 20 consecutive patients underwent contrast-enhanced, ECG-gated CT scanning. Left atrial volumes were generated from the reconstructed data at &75% of the R-R interval during the cardiac cycle. Similarly, the superior vena cava and the coronary sinus were also reconstructed from these images. During the electrophysiology procedure, digital records (cine sequences) were obtained. Using predetermined algorithms, both the phantom model and the patients' 3D left atrial models derived from the CT were registered with projection images of fluoroscopy. Registration was performed with a transformation that linked the superior vena cava and the coronary sinus from the CT model with a catheter placed inside the coronary sinus via the superior vena cava. Registration was successfully accomplished with the plastic phantom and in all 20 patients. Registration accuracy was assessed in the phantom by assessing the overlapping beads seen both in the CT and the fluoroscopy images. The mean registration error was 1.4 mm (range 0.9 to 2.3 mm). Accuracy of the registered images was assessed in patients with recordings from a basket catheter placed sequentially in the superior PVs and by injecting contrast into the PVs to assess overlapping of contrast-filled PVs with the corresponding vessels on the registered images. The images could be calibrated quite accurately. Any rotational error, which was usually minor, could be corrected by rotating the images as needed. CONCLUSIONS: Registration of 3D models of the left atrium and PVs with fluoroscopic images of the same is feasible and could enable appropriate navigation and localization of the mapping and ablation catheter during procedures such as atrial fibrillation ablation. |
| | |
Authors:
|
Jasbir Sra; David Krum; Angela Malloy; Melissa Vass; Barry Belanger; Elisabeth Soubelet; Regis Vaillant; Masood Akhtar |
Related Documents
:
|
11548935 - Evaluation of linear registration algorithms for brain spect and the errors due to hypo... 12670015 - Nonrigid image registration in shared-memory multiprocessor environments with applicati... 10631375 - Frameless stereotaxy and anterior cervical surgery. 18193935 - Multiscale deformable registration of noisy medical images. 9381355 - Three-dimensional endoscopic ultrasound of the esophagus. preliminary experience. 17728825 - Fluorescent molecular tomographic image reconstruction based on the green's function. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Circulation Volume: 112 ISSN: 1524-4539 ISO Abbreviation: Circulation Publication Date: 2005 Dec |
Date Detail:
|
Created Date: 2005-12-13 Completed Date: 2006-02-21 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0147763 Medline TA: Circulation Country: United States |
Other Details:
|
Languages: eng Pagination: 3763-8 Citation Subset: AIM; IM |
Affiliation:
|
Electrophysiology Laboratories, St. Luke's and Aurora Sinai Medical Centers, University of Wisconsin Medical School-Milwaukee Clinical Campus, Milwaukee, WI, USA. bdanek@hrtcare.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Algorithms Contrast Media Diagnostic Imaging / methods* Electrocardiography Electrophysiologic Techniques, Cardiac Feasibility Studies Fluoroscopy / methods Heart Atria / anatomy & histology* Heart Catheterization / methods Humans Image Interpretation, Computer-Assisted / methods Imaging, Three-Dimensional / methods Male Middle Aged Models, Cardiovascular* Phantoms, Imaging Tomography, X-Ray Computed / methods |
| Chemical | |
Reg. No./Substance:
|
0/Contrast Media |
| Comments/Corrections | |
Comment In:
|
Circulation. 2005 Dec 13;112(24):3677-9
[PMID:
16344399
]
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Cost-effectiveness of fixed-dose combination of isosorbide dinitrate and hydralazine therapy for bla...
Next Document: Nuclear factor-kappaB-mediated cell survival involves transcriptional silencing of the mitochondrial...