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Recent advances in ultrasonic technology have permitted differentiation of tissue within an organ. Fifty-nine patients in whom satisfactory follow-up could be obtained underwent grey-scale ultrasonic examination of their livers. Fifty-three patients were scanned successfully and of these a correct diagnosis as to whether metastases were present or not was given in 46. Ultrasound is a safe non-invasive way of detecting hepatic metastases.
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Vicary et al. (1978) studied this question.
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