DYNAMIC CT DENSITOMETRY OF HEPATIC-TUMORS
DYNAMIC CT DENSITOMETRY OF HEPATIC-TUMORS
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DOI：
10.2214/ajr.135.5.1037
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发表时间：
1980-01-01
影响因子：
5
通讯作者：
TASAKA, A
中科院分区：
文献类型：
--
作者：
ARAKI, T;ITAI, Y;TASAKA, A
患有肝肿瘤的患者（42 名）接受了连续计算机断层扫描（CT）检查，使用造影剂推注。在注射后15、60和120时在包含肿瘤的切片水平上进行扫描。在这些图像和对比前 CT 图像上对肿瘤、肝脏和主动脉的密度进行采样。根据肿瘤与肝实质之间的密度差的连续绘图所得出的模式，将肿瘤分为4种类型。 I型表现为快速且持续的肿瘤高度强化，II型肿瘤快速强化，但随后很快变得比肝脏密度低，III型肿瘤与肝脏之间的密度差异随时间没有显着变化，IV型表现为没有或很少有肿瘤强化。所有海绵状血管瘤均属于I型，2/3的肝癌为II型。 CT 和血管造影上的肿瘤血管分布之间存在良好的相关性。这种动态连续 CT 扫描技术在评估肝脏肿瘤方面可能是对传统滴注技术的改进。
Patients (42) with hepatic tumors were examined by serial computed tomography (CT), using bolus injection of contrast medium. Scanning was at 15, 60 and 120 postinjection at a slice level containing the tumor. The densities of the tumor, liver and aorta were sampled on these and on precontrast CT images. The tumors were divided into 4 types according to the pattern derived by sequential plotting of the density difference between the tumor and the liver parenchyma. Type I manifested rapid and prolonged high tumor enhancement, in type II the tumor was enhanced rapidly but then quickly became less dense than the the liver, in type III there was no significant change over time in the density difference between the tumor and the liver, and type IV showed no, or very little, tumor enhancement. All cavernous hemangiomas belonged to type I while 2/3 of the hepatomas were type II. There was a good correlation between tumor vascularity on CT and angiography. This dynamic serial CT scanning technique may be an improvement over the conventional drip-infusion technique in assessing liver tumors.