1.
Aviat Space Environ Med
; 47(4): 362-5, 1976 Apr.
Article
in English
| MEDLINE
| ID: mdl-1275823
ABSTRACT
A simple method to estimate cardiac size from single frontal plane chest roentgenograms has been described. Pre- and postflight chest X-rays from Apollo 17, and Skylab 2 and 3 have been analyzed for changes in the cardiac silhouette size. The data obtained from the computed cardiothoracic areal ratios compared well with the clinical cardiothoracic diametral ratios (r = .86). Though an overall postflight decrease in cardiac size is evident, the mean difference was not statistically significant (n = 8). The individual decreases in the cardiac silhouette size postflight are thought to be due to decrements in intracardiac chamber volumes rather than in myocardial muscle mass.
Subject(s)
Heart/anatomy & histology , Space Flight , Adult , Cardiac Volume , Heart/diagnostic imaging , Humans , Male , Radiography , Time Factors
2.
IEEE Trans Biomed Eng
; 21(2): 114-8, 1974 Mar.
Article
in English
| MEDLINE
| ID: mdl-4818796