Amanuma M, Enomato K, Watabe T, Heshiki A
Department of Radiology, Saitama Medical School.
Nihon Igaku Hoshasen Gakkai Zasshi. 1997 May;57(6):344-6.
Contrast-enhanced three-dimensional MR angiography (MRA) combined with a subtraction technique was performed in six patients with a solid tumors in the head or neck region. Using the subtraction technique, the contrast-to-noise ratio between the internal carotid artery and fat tissue increased from 18.2 +/- 7.4 to 64.7 +/- 30.8. The MRA findings demonstrated both arteries and enhancing tumors with effective background signal suppression, making tumor extension and relation to the arterial branches more evident. The proposed technique is promising for screening arterial abnormalities of the head and neck in patients with solid tumors.
对6例头颈部实性肿瘤患者进行了对比增强三维磁共振血管造影（MRA）并结合减影技术。采用减影技术后，颈内动脉与脂肪组织之间的对比噪声比从18.2±7.4提高到64.7±30.8。MRA结果显示，动脉和强化肿瘤均有显示，背景信号得到有效抑制，使肿瘤的延伸及与动脉分支的关系更加清晰。所提出的技术在筛查头颈部实性肿瘤患者的动脉异常方面具有前景。
