On average, the images were 51% overexposed, with an average tissue overexposure of 46%.  Notably, there was larger overexposure for women in the supine position at 63%, compared to men at 43% (p < 0.001). In the upright position, there was a smaller difference with 56% for women and 48% for men. Relevant results are summarized in a table.

In the supine position (figure overall overexposure in the supine position): 62% of supine images in women showed overexposure of at least 50%, with only 35% of men falling into the same category. Lateral overexposures were more prominent in women, with 15% on both the left and right sides, compared to men (8% left and 10% right) (p < 0.001). Caudally, the average overexposure was 17% for men and 26% for women. The overexposure cranially was the lowest, with the largest proportion of radiation not hitting patient tissue in this area.

In the upright position: (figure overall overexposure in the upright position): Once again, women showed a higher overexposure of 56% compared to men (48%) (p = 0.007). Lateral overexposure was again higher in women (12% left and 14% right) compared to men (8% left and 9% right) (p < 0.001). Caudally, however, there was little difference with women showing 24% and men 23%. Measured by the overexposed areas, the cranial area also contained the lowest proportion of tissue.