Abstract
Background: Multidetector computed tomography (MDCT) visualization of the pulmonary veins (PV) and left atrium provides the necessary anatomic information for successful left atrial ablation and PV isolation. However, the potential risks due to exposure to ionizing radiation associated with MDCT have raised concerns. Objectives: The purpose of this study was to compare radiation exposure between prospective and retrospective ECG-gated CT angiography (hereafter, prospective CTA, retrospective CTA). Methods: The 64-slice MDCT (Discovery CT 750HD, GE Healthcare) was performed 78 consecutive patients. Twenty-eight patients were analyzed by prospective CTA using step-and-shoot protocol, and 50 patients were analyzed by retrospective CTA. Results: Mean (±SD) effective radiation exposure in the prospective CTA group was 2.2±0.8 mSv compared to 15.4±5.9 mSv in the retrospective CTA group (p<0.001). Conclusion: In preoperative evaluation of PV isolation, prospective CTA can reduce radiation exposure than retrospective CTA.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
