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公开(公告)号：US20200165918A1
公开(公告)日：2020-05-28
申请号：US16199353
申请日：2018-11-26
摘要： A turbine rotor blade including an airfoil that extends from a platform. The platform may include a first portion of a nominal platform contour substantially in accordance with Cartesian coordinate values of X′, Y′, and Z′ as set forth in Table II. The Cartesian coordinate values of X′, Y′, and Z′ are non-dimensional values from 0% to 100% convertible to dimensional distances by multiplying the Cartesian coordinate values of X′, Y′, and Z′ by a height of the airfoil defined along a Z′ axis. The X′ and Y′ values of the first portion are coordinate values that, when connected by smooth continuing arcs, define contour lines of the first portion of the nominal airfoil profile at each Z′ coordinate value. The contour lines may be joined smoothly with one another to form the first portion.
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公开(公告)号：US09949650B2
公开(公告)日：2018-04-24
申请号：US13842104
申请日：2013-05-06
发明人： Peter Michael Edic , Robert Franklin Senzig , Kai Erik Thomenius , Steven James Gray , David Allen Langan , Prem Venugopal , Jeffrey Brian Fowlkes
IPC分类号： A61B5/00 , A61B5/026 , A61B8/06 , A61B5/02 , A61B6/03 , A61B6/00 , A61B8/08 , G06F19/00 , G06F17/50
CPC分类号： A61B5/026 , A61B5/02007 , A61B6/032 , A61B6/4078 , A61B6/4085 , A61B6/4441 , A61B6/481 , A61B6/503 , A61B6/504 , A61B6/507 , A61B6/5217 , A61B6/5247 , A61B6/5288 , A61B8/06 , A61B8/0883 , A61B8/0891 , A61B8/488 , A61B8/5223 , A61B8/5261 , A61B8/5284 , G06F17/5009 , G06F2217/16 , G16H50/50
摘要： Approaches for assessing hemodynamic characteristics for an organ of interest are related. In one implementation, a fluid dynamics model may be provided with data derived from an anatomic imaging modality and blood flow information derived by ultrasound to derive the desired hemodynamic characteristics. In one such implementation, a fractional flow reserve is estimated.
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公开(公告)号：US10438355B2
公开(公告)日：2019-10-08
申请号：US14936903
申请日：2015-11-10
IPC分类号： A61B6/00 , G06T7/00 , A61B5/02 , A61B5/022 , A61B5/026 , A61B5/055 , A61B5/00 , A61B5/0285 , G06T7/11 , G06T7/62 , G16H50/30 , G16H30/40
摘要： A method for determining an arterial pulse wave velocity representative of a health condition of a blood vessel includes receiving an image data set comprising a plurality of images of a subject, from an imaging modality. The method also involves determining a blood vessel region in an image from the plurality of images. The method further includes determining a plurality of cross-sectional area values of a blood vessel at a plurality of locations in the blood vessel region, corresponding to a plurality of phases of a cardiac cycle of the subject and determining a plurality of flow rate values of blood flowing in the blood vessel corresponding to the plurality of cross-sectional area values. The method also includes determining a hemodynamic model based on the plurality of cross-sectional area values and the plurality of blood flow rate values and determining the arterial pulse wave velocity based on the hemodynamic model.
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公开(公告)号：US20180192916A1
公开(公告)日：2018-07-12
申请号：US15402386
申请日：2017-01-10
CPC分类号： A61B5/055 , A61B5/0036 , A61B5/0044 , A61B5/02007 , A61B5/021 , A61B5/1075 , A61B5/7275 , A61B6/504 , A61B6/507 , A61B6/5217 , A61B8/06 , A61B8/0891 , G16H30/40 , G16H50/30 , G16H50/50
摘要： A system and method of characterizing a blood vessel. An imaging modality is utilized to take an image of the blood vessel that is under a first stimulated condition and an image of the blood vessel is under a second stimulated condition. The first and second images of the blood vessel are then compared to one another to determine stress and strain data of the blood vessel in order to characterize the blood vessel.
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公开(公告)号：US20140005535A1
公开(公告)日：2014-01-02
申请号：US13842104
申请日：2013-05-06
发明人： Peter Michael Edic , Robert Franklin Senzig , Kai Erik Thomenius , Steven James Gray , David Allen Langan , Prem Venugopal , Jeffrey Brian Fowlkes
IPC分类号： A61B5/026
CPC分类号： A61B5/026 , A61B5/02007 , A61B6/032 , A61B6/4078 , A61B6/4085 , A61B6/4441 , A61B6/481 , A61B6/503 , A61B6/504 , A61B6/507 , A61B6/5217 , A61B6/5247 , A61B6/5288 , A61B8/06 , A61B8/0883 , A61B8/0891 , A61B8/488 , A61B8/5223 , A61B8/5261 , A61B8/5284 , G06F17/5009 , G06F2217/16 , G16H50/50
摘要： Approaches for assessing hemodynamic characteristics for an organ of interest are related. In one implementation, a fluid dynamics model may be provided with data derived from an anatomic imaging modality and blood flow information derived by ultrasound to derive the desired hemodynamic characteristics. In one such implementation, a fractional flow reserve is estimated.
摘要翻译： 评估感兴趣器官血液动力学特征的方法是相关的。 在一个实施方案中，可以向流体动力学模型提供从解剖成像模态导出的数据和由超声导出的血流信息以导出所需的血液动力学特征。 在一个这样的实现中，估计分数流量储备。
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公开(公告)号：US11939880B1
公开(公告)日：2024-03-26
申请号：US17980134
申请日：2022-11-03
发明人： Paul Hadley Vitt , Matthew Brian Surprenant , Brian David Keith , Prem Venugopal , Thomas William Vandeputte
CPC分类号： F01D5/02 , F01D5/14 , F05D2220/30
摘要： A turbine engine stage includes a plurality of airfoils extending between an inner band and an outer band. Each airfoil in the plurality of airfoils can have an outer wall defining a pressure side and a suction side, with the outer wall extending between a leading edge and a trailing edge. An intervening flow passage is defined between two adjacent airfoils in the plurality of airfoils.
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公开(公告)号：US10964017B2
公开(公告)日：2021-03-30
申请号：US16192551
申请日：2018-11-15
发明人： Jed Douglas Pack , Peter Michael Edic , Xin Wang , Xia Li , Prem Venugopal , James Vradenburg Miller
摘要： The present disclosure relates to training one or more neural networks for vascular vessel assessment using synthetic image data for which ground-truth data is known. In certain implementations, the synthetic image data may be based in part, or derived from, clinical image data for which ground-truth data is not known or available. Neural networks trained in this manner may be used to perform one or more of vessel segmentation, decalcification, Hounsfield unit scoring, and/or estimation of a hemodynamic parameter.
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公开(公告)号：US20200245967A1
公开(公告)日：2020-08-06
申请号：US16267147
申请日：2019-02-04
发明人： Prem Venugopal , Luca Marinelli
摘要： The present disclosure relates to localization of bleeds (e.g., arterial bleed events) using a limited or minimal number of ultrasound scans. In one implementation, Doppler ultrasound is used to measure blood flow velocities in a one-dimensional (1D) arterial tree model to determine the location and size of bleed. In a second implementation, ultrasound measured waveforms for blood flow velocity and vessel cross-sectional area are de-composed. The features in the de-composed waveforms are then used to locate the bleed using a trained algorithm.
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公开(公告)号：US10240462B2
公开(公告)日：2019-03-26
申请号：US15010145
申请日：2016-01-29
IPC分类号： F01D5/14
摘要： A turbine stage includes a row of airfoils joined to corresponding platforms to define flow passages therebetween. Each airfoil includes opposite pressure and suction sides and extends in chord between opposite leading and trailing edges. Each platform has a contoured flow surface including a purge valley, an elevated bulge and a bowl. The purge valley has a maximum depth at an elevation equal to or greater than a nominal axisymmetric platform surface of the corresponding platform. The purge valley extending tangentially against a purge cavity wall and into the blend area and extending axially from proximate the leading edge of a first airfoil toward the suction side of the first airfoil, and toward the leading edge of a second adjacent airfoil to channel a purge flow. The elevated bulge adjoins the pressure side aft of the leading edge and the bowl adjoins the suction side aft of the leading edge.
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公开(公告)号：US20170325770A1
公开(公告)日：2017-11-16
申请号：US15154637
申请日：2016-05-13
摘要： The present approach provides a non-invasive methodology for estimation of coronary flow and/or fractional flow reserve. In certain implementations, various approaches for personalizing blood flow models of the coronary vasculature are described. The described personalization approaches involve patient-specific measurements and do not assume or rely on the resting coronary flow being proportional to myocardial mass. Consequently, there are fewer limitations in using these approaches to obtain coronary flow and/or fractional flow reserve estimates non-invasively.
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