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目的：评价螺旋ＣＴ作肝脏肿瘤早期增强扫描的作用。方法：用螺旋ＣＴ对２５４例肝脏肿瘤患者作全肝早期增强扫描。以２～３ｍｌ／ｓ的速度经肘前静脉注入３００ｍｇＩ／ｍｌ的造影剂９０ｍｌ，在注射造影剂２５～４０ｓ时开始扫描，６０ｓ内扫完全肝。结果：与邻近肝组织相比，１３０例肝细胞性肝癌中有９８例呈高密度；３２例呈等或低密度：早期癌３例、弥漫型４型，病灶直径在１０ｃｍ以上者７例，有明显肝动脉—门静脉瘘者１８例。８７例肝转移瘤中有７４例呈环形增强。３７例海绵状血管瘤中１１处直径小于２ｃｍ病灶呈早期显著增强，较大的病灶呈向心性增强。结论：螺旋ＣＴ作肝脏早期增强扫描可如实显示肿瘤血供和血管受侵的情况，有利于病灶性质的鉴别和多血供多发病灶及小病灶的发现
Objective: To evaluate the role of spiral CT in early enhancement of liver tumors. METHODS: Spiral CT scans were performed on 254 patients with hepatic tumors. At a rate of 2 to 3 ml/s, 90 ml of a contrast agent of 300 mg I/ml was injected through the anterior antecubital vein. Scanning was started 25 to 40 seconds after the contrast agent was injected, and the liver was completely scanned within 60 seconds. RESULTS: Compared with the adjacent liver tissue, 98 cases of 130 cases of hepatocellular carcinoma showed high density; 32 cases showed equal or low density: 3 cases of early cancer, diffuse type 4, 7 cases of lesions above 10 cm in diameter, There were 18 cases of hepatic artery-portal fistula. Among 87 cases of hepatic metastases, 74 cases showed annular enhancement. Among the 37 cases of cavernous hemangioma, 11 lesions with a diameter of less than 2 cm showed significant early enhancement, and larger lesions showed an increase in centripetal enhancement. Conclusion: Spiral CT as an early enhancement scan of the liver can accurately show the blood supply and vascular invasion of the tumor, which is beneficial to the identification of the nature of the lesion and the discovery of multiple lesions and multiple lesions