RESUMO
We conducted a meeting of experts to establish rules for the management of patients with cardiovascular devices when they require a magnetic resonance imaging (MRI) study in the most common clinical scenarios, defining whether the study is safe, unsafe or conditional.
Assuntos
Fios Ortopédicos , Próteses Valvulares Cardíacas , Imageamento por Ressonância Magnética/normas , Marca-Passo Artificial , Stents , Humanos , Fatores de RiscoRESUMO
Se realizó una reunión de expertos para establecer normas para el abordaje de pacientes con dispositivos cardiovasculares cuando requieran la realización de una resonancia magnética (RM) en los escenarios clínicos más frecuentes, definiendo si la realización de la RM es segura, insegura o condicional.
We conducted a meeting of experts to establish rules for the management of patients with cardiovascular devices when they require a magnetic resonance imaging (MRI) study in the most common clinical scenarios, defining whether the study is safe, unsafe or conditional.
Assuntos
Humanos , Fios Ortopédicos , Próteses Valvulares Cardíacas , Imageamento por Ressonância Magnética/normas , Marca-Passo Artificial , Stents , Fatores de RiscoRESUMO
Se presentan las imágenes de la resonancia magnética cardíaca (RMC) de un paciente de 38 años portador de una amiloidosis cardíaca con clínica de insuficiencia cardíaca congestiva. La RMC debería considerarse ante la sospecha diagnóstica de amiloidosis cardíaca y podría ser útil para monitorizar la respuesta al tratamiento.
We present images of cardiac magnetic resonance (CMR) of a 38 years old patient carrying a cardiac amyloidosis with clinic of congestive heart failure. CMR should be considered before the suspected diagnosis of cardiac amyloidosis and may be useful to monitor treatment response.
Apresentamos imagens de ressonância magnética cardíaca (RMC) de um paciente de 38 anos carregando uma amiloidose cardíaca com clínica de insuficiência cardíaca congestiva. CMR deve ser considerado suspeito antes do diagnóstico de amiloidose cardíaca e pode ser útil para monitorar a resposta ao tratamento.
RESUMO
Se presentan las imágenes de resonancia magnética nuclear de una paciente de 38 años portadora de hipertensión pulmonar idiopática.
We present the images of nuclear magnetic resonance of a 38-year-old woman with idiopathic pulmonary hypertension.
Apresentam-se as imagens de ressonância magnética nuclear de uma paciente de 38 anos portadora de hipertensão pulmonar idiopatica.
Assuntos
Humanos , Espectroscopia de Ressonância Magnética , Hipertensão PulmonarRESUMO
PURPOSE: To evaluate the relationship between coronary artery calcium (CAC) and coronary vasodilator function. METHODS: We evaluated 136 patients without known coronary artery disease (CAD) undergoing vasodilator stress (82)Rb PET/CT and CAC scoring who showed normal myocardial perfusion. The CAC score, resting and hyperemic myocardial blood flow (MBF), coronary flow reserve (CFR) and coronary vascular resistance were analyzed. RESULTS: Global and regional CAC scores showed significant but weak inverse correlations with hyperemic MBF (r=-0.31 and r=-0.26, p< or =0.0002 respectively) and CFR (r=-0.28 and r=-0.2, p< or =0.001 respectively). With increasing CAC score, there was a modest stepwise decline in CFR on a per-patient basis (1.8+/-0.5 vs 1.7+/-0.5 vs 1.5+/-0.4, p=0.048, with total CAC=0, 1-400 and >400, respectively) and on a per-vessel basis. In multivariable modeling only body mass index and CAC score were predictive of CFR. CONCLUSION: In patients with an intermediate likelihood of, but without overt, CAD, there is a statistically significant but weak inverse correlation between CAC content and coronary vasodilator function. The strength of this association weakens after adjusting CAC scores for age, gender and coronary risk factors. This suggests that CAC and coronary vasodilator function provide biologically different information regarding atherosclerosis.
