Fully automated segmentation of left atrium and pulmonary veins in late gadolinium enhanced MRI
نویسندگان
چکیده
Background Late gadolinium enhanced (LGE) MRI enables scar assessment in the left atrial (LA) wall, providing valuable information for treatment planning and image based procedure guidance in patient with atrial fibrillation (AF). Accurate and objective segmentation of the anatomy of the LA and pulmonary veins (PV) is an important prerequisite for atrial scar assessment. However, segmentation of the LA and PV’s from LGE MRI is highly complex due to morphologic variations and limited image contrast. The study aims to develop a fully automated method for LA and PV endocardial wall segmentation from LGE MRI.
منابع مشابه
Multi-atlas propagation based left atrium segmentation coupled with super-voxel based pulmonary veins delineation in late gadolinium-enhanced cardiac MRI
Late Gadolinium-Enhanced Cardiac MRI (LGE CMRI) is a non-invasive technique, which has shown promise in detecting native and post-ablation atrial scarring. To visualize the scarring, a precise segmentation of the left atrium (LA) and pulmonary veins (PVs) anatomy is performed as a first step—usually from an ECG gated CMRI roadmap acquisition—and the enhanced scar regions from the LGE CMRI image...
متن کاملDoes acute pulmonary vein stenosis secondary to edema on immediate post ablation procedure CMR increase risk for development of chronic pulmonary vein stenosis
Background From January, 2010 to September, 2011, 224 patients who underwent pulmonary vein isolation and debulking of the septal and posterior walls of the left atrium as part of RFA procedure for atrial fibrillation were imaged on a 3 Tesla MR scanner (Verio, Siemens Healthcare). Time interval between the conclusion of ablation procedure and placing the patient in the scanner was typically le...
متن کاملCombining acquisition and image processing methods to improve evaluation of arial wall scar patterns after pulmonary vein isolation
Background Pulmonary vein isolation (PVI) is a therapy to treat patients with atrial fibrillation (AF) but suffers a >30% recurrence rate. Studies have shown that gaps in the scar pattern encircling the pulmonary veins are linked to recurrence. Co-registering angiography images of the atrial blood pool to late gadolinium enhanced (LGE) images of the atrial wall to determine scar pattern suffer ...
متن کاملIdiopathic dilatation of the right atrium.
dimensional gadolinium-enhanced MR venography technique for imaging central veins. Am J Roetgenol 1999;173:999–1003. 28. Lebowitz JA, Rofsky NM, Krinsky GA, Weinreb JC. Gadolinium-enhanced body MR venography with subtraction technique Am J Roentgenol 1997;169:755–8. 29. Greil GF, Powell AJ, Gildein HP, Geva T. Gadolinium-enhances three-dimensional magnetic resonance angiography of pulmonary and...
متن کاملComparison of left atrial area marked ablated in electroanatomical maps with scar in MRI.
BACKGROUND Three-dimensional electroanatomic mapping (EAM) is routinely used to mark ablated areas during radiofrequency ablation. We hypothesized that, in atrial fibrillation (AF) ablation, EAM overestimates scar formation in the left atrium (LA) when compared to the scar seen on late-gadolinium enhancement magnetic resonance imaging (LGE-MRI). METHODS AND RESULTS Of the 235 patients who und...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 18 شماره
صفحات -
تاریخ انتشار 2016