کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10337646 | 692876 | 2013 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Statistical coronary motion models for 2DÂ +Â t/3D registration of X-ray coronary angiography and CTA
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
گرافیک کامپیوتری و طراحی به کمک کامپیوتر
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Accurate alignment of intra-operative X-ray coronary angiography (XA) and pre-operative cardiac CT angiography (CTA) may improve procedural success rates of minimally invasive coronary interventions for patients with chronic total occlusions. It was previously shown that incorporating patient specific coronary motion extracted from 4D CTA increases the robustness of the alignment. However, pre-operative CTA is often acquired with gating at end-diastole, in which case patient specific motion is not available.For such cases, we investigate the possibility of using population based coronary motion models to provide constraints for the 2DÂ +Â t/3D registration. We propose a methodology for building statistical motion models of the coronary arteries from a training population of 4D CTA datasets. We compare the 2DÂ +Â t/3D registration performance of the proposed statistical models with other motion estimates, including the patient specific motion extracted from 4D CTA, the mean motion of a population, the predicted motion based on the cardiac shape.The coronary motion models, constructed on a training set of 150 patients, had a generalization accuracy of 1Â mm root mean square point-to-point distance. Their 2DÂ +Â t/3D registration accuracy on one cardiac cycle of 12 monoplane XA sequences was similar to, if not better than, the 4D CTA based motion, irrespective of which respiratory model and which feature based 2D/3D distance metric was used. The resulting model based coronary motion estimate showed good applicability for registration of a subsequent cardiac cycle.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Image Analysis - Volume 17, Issue 6, August 2013, Pages 698-709
Journal: Medical Image Analysis - Volume 17, Issue 6, August 2013, Pages 698-709
نویسندگان
N. Baka, C.T. Metz, C. Schultz, L. Neefjes, R.J. van Geuns, B.P.F. Lelieveldt, W.J. Niessen, T. van Walsum, M. de Bruijne,