Computed Tomography Parameters for Prognosis Prediction in Non-Occlusive Mesenteric Ischemia

Area of Science:

• Radiology
• Gastroenterology
• Vascular Surgery

Background:

• Non-occlusive mesenteric ischemia (NOMI) presents diagnostic challenges and carries a high mortality rate.
• Early diagnosis and prognostic assessment are crucial for improving outcomes in NOMI patients.

Purpose of the Study:

• To identify qualitative and quantitative computed tomography (CT) parameters for early diagnosis and prognosis in NOMI.
• To correlate CT findings with patient survival to reduce mortality.

Main Methods:

• Retrospective analysis of biphasic CT images from 40 NOMI patients.
• Comparison of qualitative (vascular, intestinal, mesenteric, peritoneal findings, comorbidities) and quantitative (vessel diameters, intestinal wall density) CT parameters between survivor and non-survivor groups.
• Statistical analysis using Fisher's exact test and ANOVA.

Main Results:

• Non-survivors showed higher rates of pneumatosis intestinalis, paper-thin bowel wall, and pale mesentery.
• Survivors exhibited greater mesentery congestion, bowel wall thickening, and enhancement (including mucosa and submucosa).
• Lower diameters of celiac trunk, SMA, SMV, IVC, and IMA, along with lower artery wall density and delta HU, were observed in non-survivors. IVC diameter strongly correlated with prognosis.

Conclusions:

• Systematic evaluation of CT parameters aids in the early diagnosis of NOMI.
• CT findings can significantly contribute to assessing patient prognosis and guiding management decisions for NOMI.