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ROIs were placed on the liver, spleen, aorta, kidneys, right psoas muscle, and abdominal-wall subcutaneous fat to measure CT values and noise of various abdominal organs and to evaluate the objective image quality. a shows ROIs located in the liver, spleen, and aorta. b shows ROIs located in the kidneys. c shows ROIs located in the right psoas muscle and anterior abdominal-wall subcutaneous fat
