MRA Chest Without and With IV Contrast MRA chest with contrast can assess LA and LAA size and patency and identify LA/LAA thrombi with an accuracy of 94.3%, a sensitivity of 66.7%, and a specificity of 95.2% compared with TEE [28]. However, there are no large studies evaluating the use of MRA chest without and with IV contrast to guide preprocedural planning before LAA occlusion. Left Atrial Procedures in Atrial Fibrillation MRA Chest Without IV Contrast There is no relevant literature to support the use of MRA chest without IV contrast to guide preprocedural planning for LAA occlusion procedures. MRA Coronary Arteries Without and With IV Contrast There is no relevant literature to support the use of MRA coronary arteries without and with IV contrast to guide preprocedural planning for LAA occlusion procedures. MRA Coronary Arteries Without IV Contrast There is no relevant literature to support the use of MRA coronary arteries without IV contrast to guide preprocedural planning for LAA occlusion procedures. MRI Heart Function and Morphology Without and With IV Contrast MRI heart can assess the patency of the left atrium and LAA. There is a small amount of data assessing contrast- enhanced CMR for detection of LA/LAA thrombus. A retrospective analysis of 97 patients showed 100% concordance in LAA thrombus detection between 3-D early postgadolinium enhancement CMR and TEE [50]. Another study comparing CMR with TEE in 261 patients showed a 99.2% diagnostic accuracy for long T1 delayed enhancement CMR in detecting LAA thrombi [28]. This diagnostic accuracy was not affected by the presence of arrythmia during image acquisition. For the measurement of LAA, it needs to be complemented with a simultaneous 3D acquisition (ie, MRA). There are; however, no large studies to support the use of MRI in quantifying LAA size and morphology before endovascular occlusion [7].
Preprocedural Planning for Left Atrial Procedures in Atrial Fibrillation. MRA Chest Without and With IV Contrast MRA chest with contrast can assess LA and LAA size and patency and identify LA/LAA thrombi with an accuracy of 94.3%, a sensitivity of 66.7%, and a specificity of 95.2% compared with TEE [28]. However, there are no large studies evaluating the use of MRA chest without and with IV contrast to guide preprocedural planning before LAA occlusion. Left Atrial Procedures in Atrial Fibrillation MRA Chest Without IV Contrast There is no relevant literature to support the use of MRA chest without IV contrast to guide preprocedural planning for LAA occlusion procedures. MRA Coronary Arteries Without and With IV Contrast There is no relevant literature to support the use of MRA coronary arteries without and with IV contrast to guide preprocedural planning for LAA occlusion procedures. MRA Coronary Arteries Without IV Contrast There is no relevant literature to support the use of MRA coronary arteries without IV contrast to guide preprocedural planning for LAA occlusion procedures. MRI Heart Function and Morphology Without and With IV Contrast MRI heart can assess the patency of the left atrium and LAA. There is a small amount of data assessing contrast- enhanced CMR for detection of LA/LAA thrombus. A retrospective analysis of 97 patients showed 100% concordance in LAA thrombus detection between 3-D early postgadolinium enhancement CMR and TEE [50]. Another study comparing CMR with TEE in 261 patients showed a 99.2% diagnostic accuracy for long T1 delayed enhancement CMR in detecting LAA thrombi [28]. This diagnostic accuracy was not affected by the presence of arrythmia during image acquisition. For the measurement of LAA, it needs to be complemented with a simultaneous 3D acquisition (ie, MRA). There are; however, no large studies to support the use of MRI in quantifying LAA size and morphology before endovascular occlusion [7].