Kaiser W A, Deimling M
Abt. Diagnostik, Klinikum Nürnberg.
Rofo. 1990 May;152(5):577-82. doi: 10.1055/s-2008-1046925.
Our experience indicates that the most accurate information concerning abnormalities in the breast is obtained by a dynamic technique, in which the signal intensity before and after contrast medium injection is compared. Up to the present, only a small number of sections (1 to 5) could be obtained by dynamic MR, so that only 30-50% of the breast, depending on its size, could be examined. The availability of gradient systems, with rapid switching and high gradient amplitude and duty cycle, makes it possible to obtain a larger number of sections. A new multi-section gradient echo sequence is described, which enables one to examine the entire breast using a dynamic technique (136 images of both breasts in 14.4 minutes). Subsequent automatic post-processing, using a graphic programme, results in quantitative evaluation of the contrast images. This new sequence can be applied to dynamic MR investigations of all large organs.
我们的经验表明，通过一种动态技术可获得有关乳腺异常的最准确信息，该技术是对比注射造影剂前后的信号强度。到目前为止，动态磁共振成像（MR）只能获取少量层面（1至5个），因此根据乳房大小，只能检查30%至50%的乳腺组织。具有快速切换、高梯度幅度和占空比的梯度系统的出现，使得获取更多层面成为可能。本文描述了一种新的多层面梯度回波序列，该序列能够使用动态技术检查整个乳腺（14.4分钟内获得双侧乳房136幅图像）。随后使用图形程序进行自动后处理，可对对比图像进行定量评估。这种新序列可应用于所有大型器官的动态MR检查。
