Comparison of magnetic resonance imaging with cross-sectional echocardiography in the assessment of left ventricular mass in children without heart disease and in aortic isthmic coarctation
| Autor: | Bauer R, Michael Vogel, Konrad Bühlmeyer, Heiko Stern |
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| Rok vydání: | 1992 |
| Předmět: |
Male
medicine.medical_specialty Heart disease Adolescent Slice thickness Heart Ventricles Aortic Coarctation Left ventricular mass Internal medicine medicine Humans Multislice Cross Sectional Echocardiography Child Body surface area medicine.diagnostic_test business.industry Infant Newborn Infant Magnetic resonance imaging medicine.disease Magnetic Resonance Imaging Standard error Echocardiography Child Preschool Cardiology Linear Models Female Cardiology and Cardiovascular Medicine Nuclear medicine business |
| Zdroj: | The American journal of cardiology. 69(9) |
| ISSN: | 0002-9149 |
| Popis: | Although left ventricular (LV) mass may be important to judge effects of left-sided cardiac obstruction or hypertension, reproducible noninvasively determined normal data in the pediatric age group are scarce. To validate cross-sectional echocardiographic LV mass determination, our data were compared with LV mass assessed by magnetic resonance imaging (MRI). MRI was considered to be a good reference method because there is usually no problem in defining endo- and epicardial borders with MRI. LV mass was assessed in 14 children aged 5.3 years (10 days to 14.7 years) with a mean body surface area of 0.78 m2 (range 0.25 to 1.61). With cross-sectional echocardiography the epicardial and endocardial volumes were calculated using a Simpsons rule algorithm in the apical 2- and 4-chamber view. The difference between epi- and endocardial volumes was multiplied by 1.05 to yield the mass. Mass was assessed with MRI using a multislice technique; the area of each myocardial slice was calculated and multiplied with the slice thickness, and the resultant slice volumes were added to obtain the myocardial volume. On cross-sectional echocardiography, the mass was 55 g (range 12 to 126) or 64 g/m2 (range 46 to 79); on MRI it was 60 g (range 33 to 87) or 69 g/m2 (range 46 to 89). Regression analysis yielded an r value of 0.98 with a standard error of the estimate of 5.7 g or a 10% difference. In older children, LV mass determined by MRI was bigger than the one derived by echocardiography. It is concluded that cross-sectional echocardiography can reliably assess LV myocardial mass in pediatric patients. |
| Databáze: | OpenAIRE |
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