Coronary risk assessment at X-ray dose equivalent ungated chest CT: Results of a multi-reader study

Publikation

Coronary risk assessment at X-ray dose equivalent ungated chest CT: Results of a multi-reader study

Wissenschaftlicher Artikel/Review - 25.10.2017

Messerli Michael, Hechelhammer Lukas, Leschka Sebastian, Warschkow Rene, Wildermuth Simon, Bauer Ralf

Zitation

Messerli M, Hechelhammer L, Leschka S, Warschkow R, Wildermuth S, Bauer R. Coronary risk assessment at X-ray dose equivalent ungated chest CT: Results of a multi-reader study. Clin Imaging 2017; 49:73-79.

Art

Wissenschaftlicher Artikel/Review (Englisch)

Zeitschrift

Clin Imaging 2017; 49

Veröffentlichungsdatum

25.10.2017

eISSN (Online)

1873-4499

Seiten

73-79

Kurzbeschreibung/Zielsetzung

OBJECTIVES
To determine the value of ultra-low dose chest CT with tin filtration for ordinal coronary artery calcium (CAC) risk scoring.

METHODS
50 patients were prospectively included and underwent clinical standard dose chest CT (1.8±0.7mSv) and ultra-low dose CT (0.13±0.01mSv). Four radiologists estimated presence and extent of CAC.

RESULTS
Weighted kappa values for CAC were 0.76-0.97 in standard dose and 0.75-0.95 in ultra-low dose CT (p<0.001). Good to excellent agreement was observed for CAC ordinal risk assessment, with readers reporting identical risk in 81% of cases.

CONCLUSION
CAC risk can be qualitatively assessed from X-ray dose equivalent ungated chest CT.