Los métodos diagnósticos de imagen son importantes en la evaluación de las valvulopatías y necesarios para definir la morfología valvular, incluidos las valvas, el anillo y el aparato subvalvular, evaluar la gravedad de la afección, y obtener datos de volúmenes, función ventricular y diámetros aórticos.
Con cardiorresonancia magnética (CRM), utilizando secuencias de contraste de fase, podemos medir directamente el volumen regurgitante, la velocidad pico y estimar así el gradiente a través de una estenosis.
Las secuencias de cine nos permitirán una visualización privilegiada del tamaño de las cámaras cardiacas y de los jets de estenosis o regurgitación. Los volúmenes y la función ventricular pueden ser medidos de forma precisa y reproducible, lo que permite estudios de seguimiento.
Revisaremos las principales técnicas que se utilizan en CRM para evaluar la función valvular, y sus ventajas y limitaciones para proporcionar información clínicamente útil en el paciente con afección valvular.
Palabras clave
Valvulopatías
Resonancia magnética
Estenosis
Regurgitación
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2006. Sociedad Española de Cardiología