RESUMEN
The effective dose is a quantity used in clinical practice for statistical evaluation of the radiation dose of patients undergoing different types of examinations. Coronary computed tomography angiography (CCTA) is a specific examination whose calculated effective dose may be subject to several biases. For this reason, it is important to consider factors (different examination techniques, heart rate and patient habitus) that may influence its resulting value. Another critical factor is the methodological procedure for calculating the effective dose and cardiac-specific coefficient used to estimate effective dose from the dose-length product in computed tomography. Because CCTA is increasingly used in cardiology, it is recommended that the chest coefficient be replaced with a new cardiac coefficient when calculating the effective dose.
Asunto(s)
Angiografía por Tomografía Computarizada , Enfermedad de la Arteria Coronaria , Angiografía por Tomografía Computarizada/métodos , Angiografía Coronaria/métodos , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Corazón , Humanos , Dosis de Radiación , Tomografía Computarizada por Rayos XAsunto(s)
Procedimientos Quirúrgicos Cardíacos/efectos adversos , Implantación de Prótesis de Válvulas Cardíacas , Insuficiencia de la Válvula Pulmonar/cirugía , Tetralogía de Fallot/cirugía , Adolescente , Niño , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Válvula Pulmonar/fisiopatología , Insuficiencia de la Válvula Pulmonar/fisiopatología , Factores de Tiempo , Resultado del Tratamiento , Adulto JovenRESUMEN
A case of an asymptomatic 32-year-old male with a complex congenital pulmonary vein varix is reported herein. Chest X-ray incidentally revealed a tubular opacity passing from the periphery of the left lingula to the mediastinum. ECG gated multidetector computed tomography showed the opacity to be a vessel emptying into the left atrium via the left superior pulmonary vein. In addition, a second vascular structure was noted within the posterior mediastinum that was emptying into the same pulmonary vein. These findings were also confirmed by magnetic resonance imaging, 4D magnetic resonance angiography and invasive arterial angiography. Based on multimodality imaging findings the diagnosis of complex congenital pulmonary venous varix with posterior mediastinal extension was established.