West M S, Russell E J, Breit R, Sze G, Kim K S
Department of Diagnostic Radiology, Northwestern Memorial Hospital, Chicago, IL 60611.
Radiology. 1990 Jan;174(1):85-91. doi: 10.1148/radiology.174.1.2294576.
Fourteen patients with calvarial metastases were studied with magnetic resonance (MR) imaging before and after intravenous administration of gadolinium diethylenetriamine-pentaacetic acid (DTPA) to evaluate the utility of contrast material enhancement for the detection of calvarial metastatic tumor. MR imaging was also performed before and after enhancement in 60 patients for reasons other than evaluation of metastases or calvarial tumor, to determine the apperance of the normal calvaria with enhancement. The normal pattern of fat distribution in the diploic space was typically symmetric. Except for enhancement of diploic veins and meninges near pacchionian granulations, the normal diploic space did not enhance. Calvarial metastases typically enhanced with Gd-DTPA. Enhanced MR images were superior to nonenhanced studies for detecting subtle intradiploic metastases but were inferior to nonenhanced studies for detecting tumor extension into fat-containing areas. Careful comparison of nonenhanced and enhanced MR images is required for complete evaluation of lesions affecting the calvaria and skull base.
对14例颅骨转移瘤患者在静脉注射钆喷酸葡胺（DTPA）前后进行了磁共振（MR）成像，以评估对比剂增强对颅骨转移瘤检测的效用。另外，对60例因评估转移瘤或颅骨肿瘤以外原因而行增强检查的患者，在增强前后均进行了MR成像，以确定正常颅骨增强后的表现。板障间隙内脂肪分布的正常模式通常是对称的。除了靠近颗粒小体的板障静脉和脑膜增强外，正常板障间隙无强化。颅骨转移瘤通常在钆喷酸葡胺增强时强化。增强MR图像在检测细微的板障内转移瘤方面优于平扫检查，但在检测肿瘤向含脂肪区域的延伸方面不如平扫检查。为了全面评估累及颅骨和颅底的病变，需要仔细对比平扫和增强MR图像。
