Relationship and prognostic value of modified coronary artery calcium score, FEV 1, and emphysema in lung cancer screening population: The MILD trial

Nicola Sverzellati, Filippo Cademartiri, Francesca Bravi, Chiara Martini, Federica A. Gira, Erica Maffei, Alfonso Marchianò, Carlo La Vecchia, Massimo De Filippo, Jan Martin Kuhnigk, Cristina Rossi, Ugo Pastorino

Research output: Contribution to journalArticle

Abstract

Purpose: To assess the relationship between a modified coronary artery calcium (mCAC) score and both forced expiratory volume in 1 second (FEV 1) and pulmonary emphysema and the associations of such factors with all-cause mortality and cardiovascular events (CVEs) in a lung cancer computed tomographic (CT) screening trial. Materials and Methods: In this institutional review board-approved study, both clinical and low-dose CT data were evaluated in a cohort of heavy smokers consecutively recruited by the Multicentric Italian Lung Detection, or MILD, trial. Low-dose CT images were analyzed by using software that allowed quantification of mCAC, mean lung attenuation (MLA), and total extent of emphysema. The correlations between mCAC, percentage predicted FEV 1, MLA, and emphysema extent were tested by using the Pearson correlation coeffi cient. Adjusted multiple logistic regression models were applied to assess the relationships between mCAC, FEV 1, MLA, and emphysema extent and all-cause mortality and CVEs. Results: The final study cohort consisted of 1159 smokers. There were no significant correlations between mCAC score and FEV 1(r = - 0.03, P =.4), MLA (r = -0.01, P =.7), or emphysema extent (r = 0.02, P =.6). An mCAC score greater than 400 was the only factor that was independently associated with both all-cause mortality (odds ratio [OR]: 3.73; 95% confidence interval [CI]: 1.05, 13.32; P =.04) and CVEs (OR: 2.87; 95% CI: 1.13, 7.27; P =.03). Conclusion: mCAC is a better predictor of CVE and all-cause mortality than FEV 1 and emphysema extent and may contribute to the identification of high-risk individuals in a lung cancer screening setting.

Original languageEnglish
Pages (from-to)460-467
Number of pages8
JournalRadiology
Volume262
Issue number2
DOIs
Publication statusPublished - Feb 2012

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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