Publication: Right and left atrial dimensions with 3 tesla cardiac magnetic resonance imaging in healthy adult: HUSM experience
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Date
2021
Authors
Mohamad, Zubaidah
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Abstract
Background: Cardiac magnetic resonance (CMR) has been widely used recently. The database on normal cardiac dimensions has long been established using 1.5 Tesla magnetic resonance scanner. Data on clinical and prognostic features of measurement and volume of atria are limited especially of the right atrium. Accurate normal atrial reference values are very important in clinical practice and research. The purpose of this study was to assess the dimensions of the atrium in healthy populations undergoing 3 Tesla CMR at HUSM. Methodology: A retrospective cohort study was conducted in Hospital Universiti Sains Malaysia (HUSM), Kota Bharu, Malaysia on 57 healthy subjects aged 18 till 60 years old involving Malay, Chinese and Indian populations with 3 Tesla Cardiac magnetic resonance (CMR) between May 2020 and November 2020. Total of 29 males and 28 females were involved in this study. Two observers were responsible for the data analysis. Atrial dimensions were measured in different cardiac planes (2 chamber; 2ch, 3 chamber; 3ch, and 4 chamber; 4ch views) using a steady-state free precession sequence. Maximum area, transverse, and longitudinal diameters were evaluated. Correlation of atrial dimensions and age were analysed using Pearson’s correlation method. Results: For left atrial, the upper limits of area were 24.3 cm2 (17.3 cm2/m2) in the 4ch view, and 24.7 cm2 (15.4 cm2/m2) in the 2ch view and 21.8 cm2 (11.5 cm2/m2) in the 3ch view. The upper limits for diameters in the 4ch and 2ch views were longitudinal 5.9 cm (4.0 cm/m2) and 5.5 cm (3.7 cm/m2), transverse 5.1 cm (3.2 cm/m2) and 5.5 cm (3.5 cm/m2) cm respectively, and an anteroposterior diameter of 4.0 cm (2.3 cm/m2) in the 3ch view. For right atrial, the upper limits of area were 25.5 cm2 (15.5 cm2/m2) in the 4ch view. The upper limits for diameters in 4ch was longitudinal 5.8 cm (3.5 cm/m2) and transverse 5.7 cm (4.4 cm/m2) respectively. There was a significant linear correlation between LA longitudinal diameter for 4ch with age, maximum area for 2ch and LA longitudinal diameter for 2ch with age, and LA transverse diameter for 3ch with age. Conclusion: We have helped to provide a local database for the right atrium and left atrium dimensions in accordance with age using 3T Magnetic Resonance Imaging (MRI)
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Keywords
Atrial dimensions , Magnetic Resonance Imaging (MRI)