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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Multiple concentric ring sign in the ultrasonographic diagnosis of intussusception.

Gray scale ultrasound examination of two patients with abdominal space-occupying lesions demonstrated characteristic ring shadows on longitudinal scans. In one case a multiple concentric ring shadow resulted from an ileocolic intussusception, and in the other a "bull's eye" image was due to an infiltrating carcinoma of the pyloric antrum. A study of these patients confirms the suspicion [1] that there is a characteristic ultrasonic appearance of intussusception in bowel loops.[1]


  1. Multiple concentric ring sign in the ultrasonographic diagnosis of intussusception. Holt, S., Samuel, E. Gastrointestinal radiology. (1978) [Pubmed]
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