The appearance is generated by concentric alternating echogenic and hypoechogenic bands. The echogenic bands are formed by mucosa and muscularis whereas the submucosa is responsible fo the hypoechoic bands.
- 1. del-Pozo G, JC Albillos and D Tejedor. “Intussusception: US findings with pathologic correlation--the crescent- in-doughnut sign.” Radiology 199, no. 3 (June 1, 1996): 688-692.
- 2. Roche CJ, O'Keeffe DP, Lee WK et-al. Selections from the buffet of food signs in radiology. Radiographics. 2002;22 (6): 1369-84. Radiographics (full text) - doi:10.1148/rg.226025521 - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Target sign of intussuception||✗|
|Bull’s eye sign||✗|