Strangulating or strangulated bowel obstruction refers to ischemia and/or infarction of an obstructed loop of bowel. It is most commonly seen in the setting of closed loop obstruction.
The most specific finding of a strangulated bowel loop is reduced mural enhancement (~95%) and the most sensitive finding is mesenteric fluid (~90%) 1.
1. Laura A. Fitzpatrick, Michael D. Rivers-Bowerman, Seng Thipphavong, Sharon E. Clarke, Judy A. Rowe, Andreu F. Costa. Pearls, Pitfalls, and Conditions that Mimic Mesenteric Ischemia at CT. (2020) RadioGraphics. 40 (2): 545-561. doi:10.1148/rg.2020190122 - Pubmed
2. Fergus V. Coakley. Pearls and Pitfalls in Abdominal Imaging. (2010) ISBN: 9781139490627
3. Sung E. Rha, Hyun K. Ha, Soo-Hyun Lee, Ji-Hoon Kim, Jeong-Kon Kim, Jung H. Kim, Pyo N. Kim, Moon-Gyu Lee, Yong-Ho Auh. CT and MR Imaging Findings of Bowel Ischemia from Various Primary Causes1. (2000) RadioGraphics. 20 (1): 29-42. doi:10.1148/radiographics.20.1.g00ja0629 - Pubmed
4. Akira Furukawa, Shuzo Kanasaki, Naoaki Kono, Makoto Wakamiya, Toyohiko Tanaka, Masashi Takahashi, Kiyoshi Murata. CT Diagnosis of Acute Mesenteric Ischemia from Various Causes. (2012) American Journal of Roentgenology. 192 (2): 408-16. doi:10.2214/AJR.08.1138 - Pubmed