Abstract: Objective The aim of this study was to analyze the differential diagnosis of enhanced multi-slice spiral CT scanning in patients with hepatic hemangioma (HH) and malignant liver metastasis. Methods A total of 133 patients with space occupying lesions inside livers were encountered in our hospital between January 2018 and January 2020, and the comprehensive diagnosis based on imaging and histopathological examination revealed HH in 102 cases and malignant liver metastasis in 31 cases. All patients underwent enhanced multi-slice spiral CT scanning. Results In patients with HH, the blood flow passing time was (14.3±1.7) s, the liver blood volume was (25.4±2.6) ml/100 g, and the capillary surface permeability was (33.1±4.6), significantly higher than [(9.4±1.0)s, (13.7±1.6)ml/100 g and (27.1±3.1), respectively, P＜0.05], while the proportion of hepatic artery perfusion was (0.3±0.1)%, and the hepatic blood flow was (151.3±15.9)ml/100g/min, significantly lower than [(0.5±0.2)% and (189.3±19.6)ml/100g/min, respectively, P＜0.05] in patients with malignant liver metastasis; the incidences of lesion fusion was 60.8%, the distribution under liver capsules was 74.5%, and the target ring sign was 33.3%, significantly higher than 3.2%, 0.0% and 0.0%, respectively (P＜0.05), while the quasi circular central low-density mass was 2.0%, and the bovine eye sign was 1.0%, significantly lower than 61.3% and 48.4%(P＜0.05)in patients with malignant liver metastasis; based on the golden criteria, the sensitivity, specificity and accuracy by CT scan in diagnosing HH were 89.2%, 77.4% and 86.5%, with the Kappa of 0.638 consistent with histopathological diagnosis. Conclusion The diagnostic performance of enhanced multi slice spiral CT scanning in patients with HH is efficacious, which might guide the clinicians to make suitable plans for the patients with HH.

Key words: Hepatic hemangioma, Multi-slice spiral CT, Enhanced scan, Diagnosis