Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Reproduced from the article of Wu et al. (Eur J Cardiothoracic Surg 2013). Correlation between the Haller indices measured on CT-scan (y) and chest X-rays (x). The Pearson’s correlation is considered strong, r=0.757. A CT value of 3.25 correlates to an X-ray value of 2.5.
