Morphological and functional measurements of the heart obtained by magnetic resonance imaging in Brazilians

Author(s)

Macedo, Robson ^[1] ; Fernandes, Juliano Lara ^[2] ; Andrade, Solange Souza ^[3] ; Rochitte, Carlos Eduardo ^[3] ; Lima, Kenio Costa ^[1] ; Cavalcanti Maciel, Alvaro Campos ^[1] ; Maciel, Fernanda Cunha ^[4] ; Pinho Alves, Geraldo Souza ^[4] ; Coelho, Otavio Rizzi ^[2] ; Zuza Diniz, Rosiane Viana ^[1]

Affiliation

^[1] Univ Fed Rio Grande do Norte, BR-59072970 Natal, RN - Brazil

^[2] Univ Estadual Campinas, Campinas, SP - Brazil

^[3] Univ Sao Paulo, Fac Med, Hosp Clin, Inst Coracao, Sao Paulo - Brazil

^[4] Univ Potiguar, Natal, RN - Brazil

• Document type: Journal article
• Source: Arquivos Brasileiros de Cardiologia; v. 101, n. 1, p. 68-77, JUL 2013.
• Web of Science Citations: 4

Abstract

BACKGROUND: Still today, measurements used as a reference in the cardiac magnetic resonance imaging have been obtained mainly from studies carried out in North-American and European populations. OBJECTIVE: To obtain measurements of the diastolic diameter, systolic diameter, end diastolic volume, end systolic volume, ejection fraction, and myocardial mass of the left and right ventricles in Brazilians. METHODS: 54 men and 53 women, with mean age of 43.4 ± 13.1 years, asymptomatic, with no cardiomyopathies, have been subjected to the cardiac magnetic resonance imaging, using a balanced steady state free precession technique. RESULTS: The averages and the standard deviations of the parameters for the left ventricle have been: diastolic diameter = 4.8 ± 0.5 cm; systolic diameter = 3.0 ± 0.6 cm; end diastolic volume = 128.4 ± 29.6 mL; end systolic volume = 45.2 ± 16.6 mL; ejection fraction = 65.5 ± 6.3%; mass = 95.2 ± 30.8 g. For the right ventricle, they have been: diastolic diameter = 3.9 ± 1.3 cm; systolic diameter = 2.5 ± 0.5 cm; end diastolic volume = 126.5 ± 30.7 mL; end systolic volume = 53.6 ± 18.4 mL; ejection fraction = 58.3 ± 8.0%, and mass = 26.1 ± 6.1 g. The masses and the volumes were significantly greater in the men, except for the end systolic volume of the left ventricle. The ejection fraction of the right ventricle has been significantly greater in the women. There has been a significant and inverted correlation of the systolic volume of the right volume with the progression of the age. CONCLUSION: This study has described, for the first time, cardiac measurements obtained through the cardiac magnetic resonance imaging in Brazilians, asymptomatic, with no cardiomyopathies, showing differences in accordance with gender and age. (AU)

• FAPESP's process: 09/09513-5 - Latin american cardiovascular magnetic resonance reference study
• Grantee: Juliano de Lara Fernandes
• Support Opportunities: Regular Research Grants