The value of MSCT in diagnosing bowel ischemia of small-bowel obstruction / 实用放射学杂志

ABSTRACT

Objective To investigate the value of MSCT in assessing bowel ischemia of small-bowel obstruction .Methods CT images and electronic medical records of 40 patients with small-bowel obstruction were retrospectively evaluated.Patients were treated by surgery.The CT signs of bowel ischemia were recorded.Relationship between CT signs and bowel ischemia were tested by Fisher exact andχ2 test.Sensitivity and specificity of MSCT for ischemia were also assessed.Results Bowel ischemia was confirmed at surgery and/or pathological examination in 21 of 40 patients.Diminished enhancement after contrast agent injection was the most common sign in bowel ischemia patients.The signs of increased bowel-wall attenuation on non enhanced images and diminished enhancement after contrast agent injection were significantly associated with ischemia (P <0.000 1).The signs of increased bowel-wall attenuation on non enhanced images and pneumatosis intestinalis had high sensitivity(100%).The sign of diminished enhancement after contrast agent injection had high sensitivity(95.2%)and specificity(94.7%).Conclusion MSCT is accurate in assessing bowel ischemia of small-bowel obstruction, and improves the timeliness and diagnosis for this disease.