公开(公告)号：US5601085A

公开(公告)日：1997-02-11

申请号：US538286

申请日：1995-10-02

申请人： Jonny Ostensen ,  Morton Eriksen ,  Lars Hoff ,  Sigmund Frigstad ,  Nils Sponheim ,  Knut Dyrstad

发明人： Jonny Ostensen ,  Morton Eriksen ,  Lars Hoff ,  Sigmund Frigstad ,  Nils Sponheim ,  Knut Dyrstad

IPC分类号： A61B8/06 ,  A61B8/00 ,  A61K49/22 ,  G01S7/52 ,  G01S15/52 ,  G06T1/00

CPC分类号： A61B8/481 ,  A61K49/223 ,  G01S15/52 ,  G01S7/52036

摘要： Temporal variations in backscatter from an ultrasound contrast agent located in the vascular system and induced by movement of the scatterers are used to visualise the presence of contrast agent by determining areas where correlation between successive ultrasound images is poor. This low level of correlation arising from intravascular contrast agent movement permits distinction between stationary bulk tissue and moving bulk tissue since movement of the latter solid tissue scatterers is correlated.

摘要翻译： 使用位于血管系统中并由散射体移动引起的超声造影剂的后向散射的时间变化，通过确定连续超声图像之间的相关性较差的区域来显现造影剂的存在。 由于血管内造影剂运动引起的这种低水平的相关性允许区分固定块体组织和运动体块组织，因为后者的固体组织散射体的运动是相关的。

公开(公告)号：US06210333B1

公开(公告)日：2001-04-03

申请号：US09416041

申请日：1999-10-12

申请人： Edward A. Gardner ,  Sriram Krishnan ,  Nils Sponheim

发明人： Edward A. Gardner ,  Sriram Krishnan ,  Nils Sponheim

IPC分类号： A61B802

CPC分类号： A61B8/481 ,  A61B8/543

摘要： A region of interest in the body is imaged using at least two different trigger intervals between images. Imaging automatically switches from one trigger interval to another in response to a user command, such as depressing a button. This automation avoids cumbersome manual changes of the trigger intervals. Perfusion is measured in a shorter time in this way, reducing the effects of breathing and transducer movement. Variation of the trigger intervals allows for a convenient determination of perfusion. For example, the trigger intervals are varied from one heart cycle to two heart cycles and then to other integer numbers of heart cycles.

摘要翻译： 使用图像之间的至少两个不同的触发间隔对体内感兴趣的区域成像。 响应于诸如按下按钮的用户命令，成像自动从一个触发间隔切换到另一触发间隔。 这种自动化避免了手动更改触发间隔的麻烦。 以这种方式在更短的时间内测量灌注，减少呼吸和换能器运动的影响。 触发间隔的变化允许方便地确定灌注。 例如，触发间隔从一个心脏周期变化到两个心脏周期，然后变化到其他整数个心脏周期。

公开(公告)号：US5980460A

公开(公告)日：1999-11-09

申请号：US52936

申请日：1998-04-01

申请人： Jonny .O slashed.stensen ,  Morten Eriksen ,  Lars Hoff ,  Sigmund Frigstad ,  Nils Sponheim ,  Knut Dyrstad

发明人： Jonny .O slashed.stensen ,  Morten Eriksen ,  Lars Hoff ,  Sigmund Frigstad ,  Nils Sponheim ,  Knut Dyrstad

IPC分类号： A61B8/06 ,  A61B8/00 ,  A61K49/22 ,  G01S7/52 ,  G01S15/52 ,  G06T1/00 ,  A61B3/00

CPC分类号： A61B8/481 ,  A61K49/223 ,  G01S15/52 ,  G01S7/52036

摘要： Temporal variations in backscatter from an ultrasound contrast agent located in the vascular system and induced by movement of the scatterers are used to visualize the presence of contrast agent by determining areas where correlation between successive ultrasound images is poor. This low level of correlation from intravascular contrast agent movement permits distinction between stationary bulk tissue and moving bulk tissue since movement of the latter solid tissue scatterers is correlated.

摘要翻译： 使用位于血管系统中并由散射体移动引起的超声造影剂的后向散射的时间变化，通过确定连续超声图像之间的相关性较差的区域来显现造影剂的存在。 血管内造影剂移动的这种低水平的相关性允许区分静止体组织和运动体块组织，因为后者的固体组织散射体的运动是相关的。