Determination of atrial septal defect size by nuclear magnetic resonance imaging
نویسندگان
چکیده
منابع مشابه
Definitive clinical assessment of atrial septal defect by magnetic resonance imaging.
INTRODUCTION In patients with a pulmonary-to-systemic shunt ratio (Qp/Qs) of 2 or greater there is increasing evidence that atrial septa1 defect (ASD) closure can improve long-term survival, irrespective of age (1). ASD closure can be performed surgically or by use of percutaneous transcatheter devices. For transcatheter device placement, the ASD must be centrally placed and have a diameter of ...
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Methods 10 patients (age 34.6 ± 12 years) meeting the criteria for defect closure (large defect, 27.5 ± 6.5 mm, with evidence of right ventricular volume overload) were included. MRI was performed at rest and during supine exercise stress at the same intensity preand post(9.3 ± 8.3 months) closure. Bi-ventricular volumes and function were assessed under free breathing and continuation of exerci...
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Two-dimensional echocardiography and pulsed-Doppler studies have not proved to be reliable methods of assessing left-to-right shunt size in atrial septal defect. Doppler color-flow imaging displays the transatrial jet, providing a new dimension with the potential capability of quantifying left-to-right shunt size. Twenty-three patients with atrial septal defect were studied by color-flow imagin...
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Excellent definition of anatomic structure, ability to provide detailed flow information, and a global field of view make magnetic resonance imaging (MRI) well suited as a tool for the noninvasive diagnosis of congenital heart disease. One of the most frequently encountered lesions is the atrial septa1 defect (ASD), which may be associated with important morbidity in the long term if unrecogniz...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1991
ISSN: 0735-1097
DOI: 10.1016/0735-1097(91)92267-p