首页> 外国专利> Method and tomography device for the scanning of a patient, which is provided with a contrast medium

Method and tomography device for the scanning of a patient, which is provided with a contrast medium

机译:带有造影剂的用于患者扫描的方法和层析成像设备

摘要

A method for the scanning of a patient, which is provided with a contrast medium (1) by means of a tomography device (2), wherein during the scanning for the detection of projections of an examination zone (3) a relative movement between the patient (1) and the at least one receiving system (4, 5) of the tomography device (2) is carried out, with1.1 of the obtained during scanning projections real time slice images (6) can be reconstructed, which has at least one vessel (7) to contain an,1.2 to each layer image (6) in the region of the at least one vessel (7) a a reduction value (10; 11; 12; 13; 14) is determined, by means of which a contrast agent concentration in the vessel (7), and1.3 based on an evaluation of a sequence of determined attenuation values (10, 11, 12, 13), a dynamic control of the relative movement between the patient (1) and the recording system (4, 5) is effected in such a way that a to the flow rate of the contrast medium which is adapted to that of the scanning of the examination zone (3) is carried out, wherein, prior to passage of a local maximum of the contrast agent concentration (8) in the case of a time-dependent drop in the attenuation values (10, 11) the speed of the relative movement between the patient (1) and the recording system (4, 5) can be increased, and after passing through of the local maximum of the contrast agent concentration (9) in the case of a time-dependent drop in the attenuation values (12, 13) the speed is reduced, and wherein the control of the speed of the relative movement is proportional to the amount of the change of the attenuation values (10, 11; 12, 13) is carried out.
机译:一种用于对患者进行扫描的方法,该方法通过层析成像设备(2)配备有造影剂(1),其中,在扫描过程中,用于检测检查区(3)的投影。患者(1)和断层扫描设备(2)的至少一个接收系统(4、5)被执行,在扫描投影过程中获得的1.1可以重建实时切片图像(6),其具有确定至少一个容器(7),该容器在至少一个容器(7)的区域中的每个层图像(6)包含一个1.2,并通过以下方式确定减小值(10; 11; 12; 13; 14)造影剂在血管(7)中的浓度,以及1.3基于一系列确定的衰减值(10、11、12、13)的评估,动态控制患者(1)和患者之间的相对运动记录系统(4、5)以这样的方式实现,即,使造影剂的流量适合于扫描造影剂的流量。进行检查区域(3),其中在衰减值(10、11)随时间而下降的情况下,在通过造影剂浓度(8)的局部最大值之前,相对速​​度可以增加患者(1)和记录系统(4、5)之间的运动,并且在衰减值随时间而下降的情况下,在通过造影剂浓度(9)的局部最大值之后(如图12、13所示),速度降低,并且其中,相对运动速度的控制与衰减值的变化量成比例(10、11; 12、13)进行。

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号