摘要
目的 探讨螺旋CT扫描在肝动脉造影CT(CT hepatic arteriography,CTHA)和经动脉门脉造影CT(CTarterial Portography,CTAP)中的应用价值。方法分析28例小肝癌灶(直径<3.ocm)CTAP和CffiA的图像,并与双期增强扫描进 行对照。结果 CTAP病灶检出率为gi.5%,CTHA病灶检出率为90%。可检出0.2-0.scm的小病灶。CTHA和CTAP均可出现 非病理性表现,CTAP灌注异常出现率为12.5%,CTHA非病理性强化灶出现率为18.5%。结论螺旋CT动脉造影能显著减少 造影剂用量,提高图像质量,CT动脉造影能提高微小肝癌的检出率。CTAP和CThA结合分析,可减少假阳性率。
Objective To evaluate the usefulness of spiral CT arterial Portogrataphy (CTAP) and CT hepatic arteriogr aphy (CTHA). Methods CTAP and CTHA manifestations in 28 patients with smll hepatocellular carcinoma (≤3cm in diameter) were analyzed and compared with those in biphase enhanced CT. Results The detection rate of CTAP and CTHA was 91.5% and 90%, respechvely. They could reveal the tumors of 0.2-0.5cm in diameter.Both CTAP and CTHA gave falisePositive fidings, such as perfusion defects in 12.5% of CTAP and nonpathologic enhancement in 18.5% of CTHA. Conclusion By the use of spiral CT technique, the quantity of contrast material administrated in CTAP and CTHA could be considerably redeced, and the quality Of CT images signficantly improved. The detection rate of CTAP and CTHA was higher than that of biphase enhanced CT. Simultaneous use of both procedues may help the decrease of the false Positive rate, and the increase of the sensitivity of diagnosis for small hepatocelluar carcimoma.
出处
《中国实验诊断学》
2000年第5期226-227,共2页
Chinese Journal of Laboratory Diagnosis