Clinical information from medical images. A comparison of two types of ultrasonic image in the detection of focal intrahepatic lesions

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Abstract
If the uncertainty in the diagnosis is measured before and after viewing a diagnostic image, the change in uncertainty is a measure of the information contributed by that image. The formal basis of information theory was used to calculate the change in uncertainty. These analytical methods were applied to assess 2 types of ultrasonic grey-scale image in the demonstration of possible focal intrahepatic lesions in humans.