Target sign (intussusception)

Target sign
(intussusception) • Intussusception (transient, small bowel) - Ganzer Fall bei Radiopaedia
Patel, M. Intussusception (transient, small bowel). Case study, Radiopaedia.org. (accessed on 02 Nov 2022) https://doi.org/10.53347/rID-9265 • CC by-nc-sa 3.0 (modified)
Target sign
(intussusception) • Single contrast enema reduction of colocolonic intussusception - Ganzer Fall bei Radiopaedia
El Deen, M. Single contrast enema reduction of colocolonic intussusception. Case study, Radiopaedia.org. (accessed on 02 Nov 2022) https://doi.org/10.53347/rID-51769 • CC by-nc-sa 3.0 (modified)
Target sign
(intussusception) • Intussusception with pseudokidney and target sign - Ganzer Fall bei Radiopaedia
Yu Jin, T. Intussusception with pseudokidney and target sign. Case study, Radiopaedia.org. (accessed on 02 Nov 2022) https://doi.org/10.53347/rID-70238 • CC by-nc-sa 3.0 (modified)
Target sign
(intussusception) • Colocolic intussusception due to mucinous carcinoma of the colon - Ganzer Fall bei Radiopaedia
Ashraf, A. Colocolic intussusception due to mucinous carcinoma of the colon. Case study, Radiopaedia.org. (accessed on 02 Nov 2022) https://doi.org/10.53347/rID-148979 • CC by-nc-sa 3.0 (modified)
Radiopaedia • CC-by-nc-sa 3.0 • de

The target sign of intestinal intussusception, also known as the doughnut sign or bull's eye sign.

The appearance is generated by concentric alternating echogenic and hypoechoic bands. The echogenic bands are formed by mucosa and muscularis whereas the submucosa is responsible fo the hypoechoic bands.

See also