CT screening for lung cancer: Assessing a regimen's diagnostic performance

Claudia I. Henschke, David F. Yankelevitz, James P. Smith, Daniel Libby, Mark Pasmantier, Dorothy McCauley, Georgeann McGuinness, David P. Naidich, Ali Farooqi, Madeline Vasquez, Olli S. Miettinen

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

The purpose of this study was to characterize the diagnostic performance of a regimen of CT screening for lung cancer. Using a common protocol/regimen of screening, 2968 asymptomatic persons at high risk for lung cancer were enrolled in two studies [Early Lung Cancer Action Projects (ELCAP) I and II] for baseline and annual repeat screening. A total of 4538 annual repeat screenings were performed. The regimen's diagnostic performance was characterized in terms of frequency of positive result of the initial CT as well as of screen-diagnosis and Stage I screen-diagnosis among all diagnoses (interim-diagnoses included), all separately for baseline and annual repeat screenings. The proportions with positive result of the initial CT were 12% and 6% in the baseline and repeat screenings, respectively. The proportions of screen-diagnoses among all diagnoses (interim-diagnoses included) were 97% and 99% in the baseline and repeat cycles, respectively. The corresponding proportions of pre-surgical Stage I screen-diagnoses were 95% and 93%. The performance of the ELCAP regimen is quite satisfactory in avoiding over many positive results of the initial CT, and it produces highly promising diagnostic results as for the attainment of cure by early intervention.

Original languageEnglish
Pages (from-to)317-321
Number of pages5
JournalClinical Imaging
Volume28
Issue number5
DOIs
StatePublished - Sep 2004
Externally publishedYes

Keywords

  • Computed tomography (CT)
  • Diagnostic methods
  • Lung cancer
  • Pooling of data
  • Screening

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