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Dose Reduction in Multidetector CT Using Attenuation-Based Online Tube Current Modulation

Denis Tack1, Viviane De Maertelaer2 and Pierre Alain Gevenois3

1 Department of Radiology, Centre Hospitalier Universitaire de Charleroi, Boulevard Janson, 92, B-6000-Charleroi, Belgium.
2 Statistical Unit, Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Route de Lennik, 808, Brussels, B1070 Belgium.
3 Department of Radiology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, B1070 Belgium.



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  		Fig. 1. —Bar chart shows classification of patients into groups according to body mass index (BMI), as defined by National Institutes of Health [11]. Classifications of patients into BMI subgroups were similar for multidetector CT (MDCT) of chest and abdomen. Underweight = < 18.5 kg/m2, normal weight = 18.5–24.9 kg/m2, overweight = 25.0–29.9 kg/m2, obese = 30.0–39.9 kg/m2, extremely obese = > 40.0 kg/m2. Black bars = patients who underwent MDCT of chest, white bars = patients who underwent MDCT of abdomen.

 

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