For both the PA and lateral images, the dose area products for all BMI values were clearly below the current German dose reference value of 16 cGy x cm2 or 55 cGy x cm2 for lateral images.
The average dose area product for PA images in this collective was 6.44 cGy x cm2 and for lateral images was 16.01 cGy x cm2 (Figs. 3 and 4). The average effective dose for a PA thorax X-ray in the collective was 0.013 mSv and for a two-plane X-ray was 0.046 mSv.
The lowest dose area product with a BMI of 18 was 3.1 for PA and 5.02 cGy x cm2 for lateral. In this case the effective dose for the complete examination was 0.016 mSv. The maximum dose area product for a PA image was 14.7 cGy x cm2, and correspondingly the dose area product for a lateral image in this case was 36.3 cGy x cm2.
Here the effective dose was 0.1 mSv for the complete examination. The image quality was assessed in line with the quality requirements of the guidelines published by the Bundesärztekammer on quality assurance in diagnostic radiology.