confoundable

However, there is no previous research that demonstrates the impact of lung size or the phase of respiration on the CTR. Interestingly, a large change in the CTR between inspiration and expiration has been described in a textbook of pediatric radiology; and this phenomenon was suggested as a confoundable finding in the evaluation of congenital heart diseases, since infants or children cannot hold their breath during CT scanning [12 ].

2015 July 8, “Changes in Cross-Sectional Area and Transverse Diameter of the Heart on Inspiratory and Expiratory Chest CT: Correlation with Changes in Lung Size and Influence on Cardiothoracic Ratio Measurement”, in PLOS ONE, →DOI