公开(公告)号：US20200329981A1

公开(公告)日：2020-10-22

申请号：US16922269

申请日：2020-07-07

申请人： ACIST Medical Systems, Inc.

发明人： Jung W. Suh ,  Todd Suchecki ,  Thomas M. Snyder ,  Robert F. Wilson

IPC分类号： A61B5/02 ,  A61B5/026 ,  A61B5/0215

摘要： One method for assessing a vessel can include obtaining a set of first location pressure measurements at a first location in the vessel over a first time period and a set of second location pressure measurements at a second location in the vessel over the first time period. This method can further include identifying a first leading characteristic associated with one or more pressure measurements in the set of first location pressure measurements, a second leading characteristic associated with one or more pressure measurements in the set of second location pressure measurements, a first trailing characteristic associated with one or more pressure measurements in the set of first location pressure measurements, and a second trailing characteristic associated with one or more pressure measurements in the set of second location pressure measurements. And, this method can include calculating a pressure ratio using pressure measurements between the identified characteristics.

公开(公告)号：US11478162B2

公开(公告)日：2022-10-25

申请号：US16420353

申请日：2019-05-23

申请人： ACIST Medical Systems, Inc.

发明人： Robert F. Wilson ,  Todd Suchecki ,  Thomas M. Snyder ,  Alan Evans ,  Bryan Brutlag

IPC分类号： A61B5/0275 ,  G06T7/246 ,  G06T7/00 ,  G06V10/75

摘要： Embodiments for assessing flow at an anatomical region of interest are disclosed. One embodiment uses pulsed contrast media injections at a known frequency along with corresponding image data to derive a measurement of blood flow velocity at the region of interest. Another embodiment uses incremental changes in known contrast media injection flow rates to match the blood flow rate relative to one of these known contrast media injection flow rates based on the presence of a particular indicia in image data. For example, this indicia can be the flow of contrast media out from a coronary artery back into the aorta or the onset of a steady state pixel density. A further embodiment uses contrast media injections that are synchronized with the cardiac cycle. For example, contrast media injections can be synchronized with the diastolic and/or systolic phases and used to measure blood flow accordingly.

公开(公告)号：US20190320911A1

公开(公告)日：2019-10-24

申请号：US16185754

申请日：2018-11-09

申请人： ACIST Medical Systems, Inc.

发明人： Jung W. Suh ,  Todd Suchecki ,  Thomas M. Snyder ,  Robert F. Wilson

IPC分类号： A61B5/02 ,  A61B5/0215 ,  A61B5/026

摘要： One method for assessing a vessel can include obtaining a set of first location pressure measurements at a first location in the vessel over a first time period and a set of second location pressure measurements at a second location in the vessel over the first time period. This method can further include identifying a first leading characteristic associated with one or more pressure measurements in the set of first location pressure measurements, a second leading characteristic associated with one or more pressure measurements in the set of second location pressure measurements, a first trailing characteristic associated with one or more pressure measurements in the set of first location pressure measurements, and a second trailing characteristic associated with one or more pressure measurements in the set of second location pressure measurements. And, this method can include calculating a pressure ratio using pressure measurements between the identified characteristics.

公开(公告)号：US10743774B2

公开(公告)日：2020-08-18

申请号：US16185754

申请日：2018-11-09

申请人： ACIST Medical Systems, Inc.

发明人： Jung W. Suh ,  Todd Suchecki ,  Thomas M. Snyder ,  Robert F. Wilson

IPC分类号： A61B5/021 ,  A61B5/02 ,  A61B5/026 ,  A61B5/0215

摘要： One method for assessing a vessel can include obtaining a set of first location pressure measurements at a first location in the vessel over a first time period and a set of second location pressure measurements at a second location in the vessel over the first time period. This method can further include identifying a first leading characteristic associated with one or more pressure measurements in the set of first location pressure measurements, a second leading characteristic associated with one or more pressure measurements in the set of second location pressure measurements, a first trailing characteristic associated with one or more pressure measurements in the set of first location pressure measurements, and a second trailing characteristic associated with one or more pressure measurements in the set of second location pressure measurements. And, this method can include calculating a pressure ratio using pressure measurements between the identified characteristics.