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Vol. 58. Issue 10.
Pages 1226-1229 (October 2005)
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Vol. 58. Issue 10.
Pages 1226-1229 (October 2005)
DOI: 10.1016/S1885-5857(06)60402-7
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Morphologic Study of the Pulmonary Veins by Magnetic Resonance Angiography
Estudio morfológico de las venas pulmonares por angiorresonancia magnética
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Francesc Carrerasa, Eva Guillaumeta, Sandra Pujadasa, Raúl López-Salgueroa, Carme Ligeroa, Rubén Letaa, Guillem Pons-Lladóa
a Unidad de Imagen Cardíaca, Servicio de Cardiología, Hospital de la Santa Creu i de Sant Pau, Barcelona, Spain.
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TABLE. Patient Characteristics and Ostium Diameters (mm) and Area (mm2) of Each Pulmonary Vein Analyzed*
Accurate knowledge of the anatomy of the pulmonary veins is important in clinical electrophysiology. In order to evaluate the usefulness of magnetic resonance angiography for this purpose, we studied 17 unselected patients. All the pulmonary veins were visualized in each individual. The diameters of the ostia ranged between 9 mm and 22 mm. The cross-section of the ostium was elliptical in 35% of cases. In 14 patients (82%), the 4 veins each had independent drainage. In 2 patients (12%), there was an additional intermediate right vein and, in 1 patient (6%), both left veins had a common ostium. In 74% of patients, the right pulmonary veins had a short common trunk with early branching. This pattern was seen in only 10% of left veins. Magnetic resonance angiography using a contrast medium is an excellent technique for studying the anatomy of the pulmonary veins and for identifying variants. The resulting information is potentially useful for electrophysiologists.
Keywords:
Magnetic resonance imaging
Pulmonary veins
Catheter ablation
Atrial fibrillation
El desarrollo de la electrofisiología clínica ha potenciado el interés por el conocimiento de la anatomía de las venas pulmonares. Con el objetivo de valorar la utilidad de la angiografía por resonancia magnética para este fin se estudió a 17 pacientes no seleccionados, en los que se visualizó la totalidad de las venas en cada paciente. El diámetro máximo de los ostium osciló entre 9 y 22 mm y su morfología era oval en el 35% de casos. En 14 casos (82%) se observó una desembocadura independiente de las 4 venas. En 2 (12%) había una vena media derecha independiente y 1 (6%) presentaba un ostium común para las venas izquierdas. Las venas derechas mostraron ramificación precoz en un 74% de los casos, frente a un 10% de las izquierdas. La angiorresonancia magnética con contraste permite estudiar, de manera adecuada, la morfología de las venas pulmonares y sus variantes anatómicas, información potencialmente útil para el electrofisiólogo.
Palabras clave:
Resonancia magnética nuclear
Venas pulmonares
Ablación con catéter
Fibrilación auricular
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Revista Española de Cardiología (English Edition)

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