Fig. 1
From: Comparison of lung image quality between CT Ark and Brilliance 64 CT during COVID-19
All images were collected from Wuhan shelter hospital. a The representative image with the subjective fine structure evaluation of 4 points. The black arrow was the place where the contrast noise ratio was measured in the right lower pulmonary artery, and the white arrow was the place where the contrast noise ratio was measured in the lung field. b The representative image with the subjective fine structure evaluation of 3 points. The solid line represents DAP (anteroposterior diameter), and the dotted line represents DL (lateral diameter). c The representative image with the subjective fine structure evaluation of 2 points. d The representative image with the subjective fine structure evaluation of 1 point