Evaluating the extent of acute radiofrequency ablation lesions in the heart using an inversion recovery SSFP sequence
نویسندگان
چکیده
Methods 15 lesions were created in the endocardium of 13 pigs using approved animal protocols. NGE IR-SSFP and T2-w black-blood (double IR-FSE) images were acquired in <60min after ablation. Then, Gd-DTPA (Magnevist, 0.2 mmol/kg) was injected and LGE images were acquired repeatedly over one hour. Gross pathology was used as the reference for lesion size measurements. Two regions were measured in this reference: the pale “inner” lesion core and the “outer” lesion border including the dark rim on pathology (see Results).
منابع مشابه
Intrinsic contrast for characterization of acute radiofrequency ablation lesions.
BACKGROUND Both intrinsic contrast (T₁ and T₂ relaxation and the equilibrium magnetization) and contrast agent (gadolinium)-enhanced MRI are used to visualize and evaluate acute radiofrequency ablation lesions. However, current methods are imprecise in delineating lesion extent shortly after the ablation. METHODS AND RESULTS Fifteen lesions were created in the endocardium of 13 pigs. A multic...
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عنوان ژورنال:
دوره 15 شماره
صفحات -
تاریخ انتشار 2013